Stanford’s latest breakthrough: logical door calculation is super simple with light quantum!

Today’s many quantum computers are complicated, it is difficult to expand the scale, and it is necessary to run more colder than the interstellar space.These challenges cause researchers to explore the possibility of constructing quantum computers operating using photon (photon).Photons can easily transfer information from one place to another, and photonic quantum computers can operate at room temperature, so this method is very promising.However, although people have successfully created a separate quantum "logic gate", a large number of logical doors are constructed with photons and connect them in a reliable manner to perform complex calculations, or a technical problem.

Recently, Stanford University researchers have proposed a simpler photon quantum computer design, and can be used along the ready-made components. According to a paper published on Journal Optica on November 29, they proposed using lasers to manipulate individual atoms, while individual atoms can modify the state of photons by a phenomenon called "quantum invisible path". The atom can also be reset and reused in many quantum doors, so that there is no need to construct a plurality of different physical doors, which greatly reduces the complexity of constructing light quantum computers.

"Normally, if you want to build this type of quantum computer, you must use thousands of quantum transmitters to keep them perfect, then integrated into a huge photon circuit," application physics doctoral student The first author BEN BEN BARTLETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTLET, and we only need a few relatively simple components, and the size of the machine does not increase with the size of the quantum program you want to run. " A very simple design requires only several devices: fiber optic cable, beam splitter, a pair of optical switches and optical cavities.

Fortunately, these components already exist and are already commercially used and continuously improved because they are currently used in quantum calculations. For example, telecommunications companies have been committed to improving fiber optic cables and optical switches. "The proposal of this program is based on people’s efforts and investment in people who have made these components. The professor of Stanford Engineering, Shanhui Fan, senior author of the papers. "They are not new components specifically used for quantum computing."

New design

The design of Stanford scientists consists of two main parts: a storage ring and a scattering unit.The function of the memory ring is similar to the memory in the normal computer, which is a fiber loop including a plurality of photons propagated around the loop. Similar to the bit of storage information in the classic computer, in this system, each photon represents a quantum bit. The photons determine the value of the quantum bits around the traveling direction of the storage ring, which may be 0 or 1. Further, since the photon is in the superimposed state, a single photon can simultaneously flow in both directions, which means the value of the combination of 0 and 1.

Figure 1. Photon quantum computer architecture described in this work.

(a) Physical design of the equipment. The photon quantum bit is reversely propagated by the fiber storage ring, and the optical switch can selectively guide the photon interaction with the atomic interaction in the cavity by the scattering unit, and the cavity is coherentiated in the cavity.

(b) The energy structure of the atom: ω1 is resonant to the cavity mold and the photon carrier frequency, and ω0 is far apart.

(c) the description of the BLOCH sphere on the photon quantum bit state {|?, |?} foundation and an operation applying the scattering unit. About rotation

Progressor and beam splitter apply a fixed angle (gray), and rotate

Apply a cavity laser using a lumen laser using a controlled angle θ (pure red). The projection measuring atom transmits this to the photon, but may exceed the target angle θ through π (red dashed line) depends on the measurement result m. ??This operation is a universal original single quantum bit: By combining multiple such operations, and The subsequent rotation angle is adjusted according to the measurement results, and any single quantum ratio can be determined.

The researchers can manipulate photons by directing photons from the memory ring to the scattering unit, where it propagates to cavities containing a single atom. The photon is then interacting with atoms, resulting in "entanglement", which is a quantum, and two particles can even affect each other at a very far distance. Then, the photon returns the storage ring, and then the state of the atom is changed again. Because the atoms and photons are entangled, the operation of the atom will also affect the state of their pairing photons.

Figure 2. Quantum gate sequence corresponding to photons pass through the scattering unit. The projection measurement will be transferred to the photon quantum bits to the rotation of atom quantum bits.

"By measuring the state of the atom, you can transfer the operation to the photon," Ben Bartlett said. "So we only need a controllable atom quantum bit, we can use it as a proxy to indirect all other photon quantum bits.

Because any quantum logic door can be compiled into a series of operations performed on a single particle, in principle, you can use only one controllable "atomic agent quantum bit" to run any size quantum program. In order to run the program, the code is converted to a series of operations, which guides the photon to the scattering unit and manipulate the atom quantum bit. Because you can control atoms and photon interactions, the same device can run many different quantum programs.

Figure 3. Conceptual diagram of the instruction sequence to compile the quantum circuit into the device to be executed on the device.

(a) Universal target quantum circuit.

(b) Decompose the equivalent circuit and the CσZ door of single quantum bit.

(c) The circuit is further decomposed into a series of scattering interactions. This sequence can be assembled into a command set on the classic computer, including six different primitives corresponding to physical actions.

(d) The controllable elements of the quantum device are optical switches, cavity lasers and atomic states.

"For many photon quantum computers, the physical structure passed by photons represents different logic doors, so if you want to change the running program, it usually involves physically reconfiguring hardware," Bartlett said. "And under this new design, you don’t need to change hardware, just need to give a different set of instructions for machines."

Which is the best computer class?Choose the most important thing for you

What professional direction is the most popular?Computer class profession is definitely the first to rush, then which one is the best in computer class?How to determine which direction is suitable?Talk to me today and talk to me.

These majors are all computer classes, and some are not very familiar.There are now many schools in accordance with a large-class enrollment, such as a computer-class enrollment plan of a 985 college, including computer science and technology, software engineering, network space safety, artificial intelligence.Colleges and universities are first in accordance with the large-class enrollment. After studying for a period of time, everyone fully understands the development of the various directions, and then depends on specific professional directions.

Next we detailed analysis about the direction of several popular computer class, and these professional parents and students asked more than, you can also determine which direction to look more suited to their development.

computer science and Technology :

This is the most common, this is the main professional design and manufacture of computer research, research carried out by computer to obtain information, representation, storage, processing, control theory and a method of discipline and so on. Computer Science and Technology is the theoretical basis of the most professional, learning content including computer hardware, software and applications, are software and hardware must learn.

The main will learn the core curriculum includes computer composition principle, assembly language, high-level language, database theory, computer architecture, computer networks, algorithms and data structures, artificial intelligence and so on the basis of courses related to computer science; but also to learn mathematical courses, especially in discrete mathematics, theoretical computer course is the basis for the system, so the math is more important; there are electrical courses, you want to understand computer hardware research, we must learn to circuit analysis, analog electronics, signal and curriculum system; another part of the software are also included learning, such as the class teacher so that we may be compiled some simple game, in fact, is also more difficult to develop when you may want to reach thousands of lines of code. So this type of professional practice for you, hands-on ability, or the high demands. There have to be able to sit tight bench research students would be more appropriate. If future graduation to become a programmer, it may take a whole day sitting in front of computer office, if you simply like to play computer games, it’ll have to think about whether they fit the.

Software Engineering:

This professional can be said to be derived in computer science and technology on the basis of practical direction, is specialized in software content direction, during school, more emphasis on training students practical ability. But also to be more focused on the project, in addition to software design developed also stressed the need for maintenance and management of late, forming a project. From requirements analysis to software design, to test, to link maintenance, etc. must take into account.

In fact, these two professional can do a lot of cross-cutting work, but there are some differences, emphasis on theoretical computer science and technology research, large and more solid foundation, but the undergraduate level is not so fine, if you want to continue postgraduate studies, then you can consider computer Science and technology; software engineering small but strong practical number, if you direct employment, consider software engineering, employment would be more handy, graduation general will be able to find suitable jobs in related businesses, if graduate You might do some research and development work. But then some after school tuition for two years the software will be 1 million or more to see whether the bear family, if that high tuition fees, but also to choose computer science and technology.

It should be noted that this is a technology-oriented fields, technology upgrading is very fast, you have to constantly learn new knowledge, college graduation is not the end, for many people that is the starting point. Later to continue to learn personal development is very important, as long as the need for programming where you need software talent, as long as the skillful employment to worry about. But there are some hard, may often work overtime, but the salary is quite good. Like all kinds of programming algorithms and research students may wish to try.

Next we say two computer class talent gap is relatively large, and have more professional development.

first of allData Science and Big Data technologies:

In simple terms, this is a big professional data-centric research object, we found a large data collection, processing, computation, analysis, application, is a cross-discipline, to learn and to apply mathematics + + computer-related statistics knowledge.

This is a national strategy and follow the professional development needs of the information age, powerful place Big Data technology, is able to determine, even if those opportunities are relying on experience may not be able to discern and future development. The earliest applications can be said that field of electronic business, take advantage of big data to understand consumer buying habits, predictive popular consumer trends, and so on. We have now entered the era of big data, municipal transportation, medical industry, the financial sector, unmanned, and so on, all aspects are inseparable from the support of big data. And the salary is relatively high, especially master degree, overall development will be better.

Then there is theinformation security:

It can be said of the Internet and network security are closely related to each of us, we often say that holding a cell phone you can go out, you can online shopping, mobile payment, then the reason why we can be so convenient, that is because our network information security Gu can be proud to protect.

The essence of information security is to protect information networks, information resources information system against all types of threats, interference and sabotage, which is to ensure the security of information, simply: research is how to ensure information security science and technology .

This is also a cross-discipline, will involve the content of mathematics, computer, communications, electronics, legal, of course, the emphasis will be focusing on computer and math, so you need math skills, ability stronger. If you want to learn the studious precision, there are still difficult, and the best are interested in this field. In recent years with the development of Internet technology, information security has become increasingly important, whether national, corporate or personal, for the protection of information more and more attention. According to statistics, as a large domestic payment platform, more than a billion times a day subject to hacker attacks, so this time we need to learn network information security talent to help us protect the information security personnel demand is constantly growing of.

These professional direction from the salary to the future development are relatively good, as to which is best? I think that is the most important of their own! Choose the time, to fully integrate their own situation, hobbies, job development and other comprehensive factors, make the most reasonable judgment. I hope my share to help everyone!

Shang Dynasty Technology By the Cosmic Cosmic Ai First Stock, how would Shang Tang Technology in Hong Kong stocks?

In recent time, Yuancos is the most red hotspot in the current market. In this context, from technology companies to sports consumer goods brands, almost, which companies are reluctant to miss the wind of the Yuan Universe, but they are in this wind. A company has to borrow the Yuan Coso to become the first share of Hong Kong stocks. This is the famous AI four small dragons. How does Shang Tang Technology will go in Hong Kong stock?

First, Shang Tang Technology heard through the Hong Kong Stock Exchange?

According to the report of Shenzhen News Network, recently, artificial intelligence software company Shang Tang Technology has passed the HKCO’s listing and updating the information set after hearing, and HSBC is a joint sponsor.

The present invention shows that as of June 30, 2021, the various cash and deposit reserves of Shang Tang exceeded 19 billion yuan, and the accumulated revenue of 9.98 billion yuan in the first half of 2018-2021.

Among them, Shang Tang Technology has revenue 1.652 billion yuan in the first half of 2021, and the same period last year was 861 million yuan, a year-on-year increase of 91.87%. In the first half of the year, it lost 3,713 million yuan. Last year, the same period was 5.33 billion yuan. Non-international financial reporting guidelines were adjusted with a net loss of 1.726 billion yuan. The same period was 110 billion yuan last year, which was over-lost year-on-year. According to Shari’s industry report, based on 2020 income levels, Shang Tang has become the largest AI software company in Asia.

The statement shows that Shang Sang’s business covers smart business, smart cities, wisdom life and smart cars, and supports AI model production and software development in various fields through a unified AI infrastructure. Prospective disclosure, 2018, 2019, 2020, in the first half of 2021, Shang Tang Technology’s gross profit margin was 56.5%, 56.8%, 70.6% and 73.0%.

Shang Tang Technology was established in 2014, is an artificial intelligence (AI) software company. Shang Dynasty Technology and Headlight Technology, Yunzheng Technology, AI Entrepreneurial Company in the three visual fields of Technology, is known as "Ai Four Small Dragons." This is also the origin of "AI Si Xiaolong" concept.

Different, after a few years of development, from the technical concept to product service, "Ai Si Xiaolong" has its own positioning and development direction. Old Big Brother Dang Technology adheres to the AI ??platform-type service route, the scientific and technological pioneer AI IoT, according to the field of medical equipment, cloud from technology, focusing on human-machine cooperative operating system.

However, in the prospectus of Shang Dynasty Technology, there is a concept that has triggered the extensive attention of the market. In the hearing information, Shang Dynasty technology has 47 times mentioned "Yuancos", 42 times of the first submission of application materials, more out 5 times. It can be seen to the "Yuan Cosm". In addition, Shang Tang Technology is self-told in the hearing, and claims to be "Asia’s largest metacharities". "

In the present invention, Shang Tang Technology said "Our Sensemars has become one of the largest metacharities platform in Asia, is the first artificial intelligence company that helps mobile applications to implement interactive enhancement reality and mixed realistic effects."

Second, how would Shang Tang Technology in Hong Kong stocks going?

In the face of Shangshui Technology through the Hong Kong Stock Exchange, and the large-scale borrowed the universe, many people are in questioning the Dang Technology to do what? How will Shang Tang Technology walk in Hong Kong stock? In fact, in September, we used the article "Shang Tang Technology sprint listed in the research" Shang Tang Technology sprint, and the four small dragons have been going on the road, the future, what should I see? "Discussion on the development of the business soup technology, but at that time, the Shang Tang Technology did not have such a big medal in the universe, this time we may further study, where is the road of Shang Tang Technology in Hong Kong?

First of all, Shang Tang Technology has a certain leap-forward service capacity as the first of the four small dragons. According to the Third Party Advisory Agency, Frost & Sullivan reports, 2020, by income, Shang Tang Technology is the largest artificial intelligent software supplier in Asia, and has become China’s largest computer vision provider with 11% market share. As of June 30, 2021, the number of customers in Shang Dynasty software platform totaled more than 2400, covering 250 "wealth" 500 companies and listed companies. Our foregoing has said that in the four small dragons in Ai, Shang Tang Technology still adheres to its own AI platform-type service route, and in the AI ??platform service, Shang Dynasty technology has already made a good market development, at least A certain customer base, this foundation helps Merchants Soup technology have a certain degree of leap-forward service capabilities, which should belong to the basic disk of Shangshui Technology to be available in Hong Kong stocks.

Secondly, the Yuan Coso, which is borrowed by Shang Dynasty, has its own people. When the first metamorosis was popular, we have repeatedly said that from the moment, there are more or less problems with most of the company’s development of Yuancos, and the technical reserves of major companies are not enough to support a perfection. Yuancosystem, the conceptual characteristic of the Yuan Universe far exceeds the general real floor characteristics, but after we carefully study the prospectus of Shang Dynasty Technology, it was found that Shang Dynasty technology is indeed the fastest in the Yuancai market. One of the companies. We found in the prospectus of Shang Tang Technology, Shang Dynasty Technology is a Yuancai Scene built using the SENSEMARS platform, builds three core elements of SenseMars Reconstruction, SenseMars Avatar and Sensemars Agent, where SenseMars Reconstruction You can build a projection of our current real universe in the metamorphic model in the metamorosis, thus building the scene of the universe. In the Yuancosian, SenseMars Agent generated software intelligent body allows users to interact directly with people in the universe, and can say that the emergence of these three core elements has gradually become a possibility that the construction of the universe from a virtual concept. Things, Shang Dynasty technology has indeed a way to borrow a Yuancosian, and Shang Tang Technology is also one of the companies that can take out the real-feasible solutions in China’s technology companies.

Third, the long-term risks of Shang Tang Technology have also existed. With platform-grained service capabilities, Shang Tang Technology has built its own business fundamentally, with the SenseMars platform, Shang Tang Technology has gone out of his own steps in the Yuancosian field, these achievements are enough to let Shang Tang Technology to the capital market, but Although it is easy to go, it is not so easy, and the risks of Shang Tang Technology also exists:

First, the loss problem will never be eradicated. Shang Tang Technology 2018, 2019, 2020, in the first half of 2021, net loss is RMB 3,433 million, 4.968 billion yuan, 12.158 billion yuan and 3,713 billion yuan, it can be said that Shang Dynasty technology’s loss has become one It is often said that we have always said that the short-term loss of technology companies is not a problem, but such a large-scale loss capital market has an unknown number.

Second, the Yuan Cosmic Concept is good, but it can’t make money in a short time. We saw the system of Shang Tang Technology, the Yuan Universe can only be said to be a bright point but is not the main business of Shang Dynasty technology, but it is this brightest growth point. The Yuan Dynasty in Shang Tang Technology is only only It is a long way to take the first step, and the distance from the truly landing is very difficult, while the other business is very far away from the distance of smart business or smart city, which is very far away. This may be a business soup. The biggest problem of technology.

Third, increasingly fierce market competition will exacerbate. For the business soup science and technology, although Shang Tang Technology occupies the first place in the four small dragons in Ai, don’t forget to do Ai, more than four small dragons, the majorities in the market are rubbed, including many giants, once these giants are all After in person with you, the competition in the entire market will undoubtedly be more intense.

Therefore, the current Shang Tang Technology is not easy to go on the Hong Kong stock road, but it is more difficult to go, this requires the business soup technology to do its own business.

Pakistan rallies from 24/4 to beat Bangladesh by four wickets in first T20I

Pakistan recovered from a precarious 24-4 to beat Bangladesh by four wickets on Friday in the first of their three Twenty20s.

The match was in the balance with three overs to go, then Shadab Khan and Mohammad Nawaz hit two sixes each and Pakistan reached 132-6 in 19.2 overs, knocking off Bangladesh’s 127-7.

Fakhar Zaman and Khushdil Shah launched Pakistan’s recovery with a 56-run partnership for the fifth wicket. They scored 34 each, removed in quick succession when Fakhar chased a wide delivery of fast bowler Taskin Ahmed to edge to wicketkeeper Nurul Hasan, and Khushdil was undone by a slower ball outside off by pacer Shoriful Islam.

With the visitors needing 32 runs in the last three overs, Shadab Khan and Mohammad Nawaz pulled off a blitz to break Bangladesh’s stranglehold.

Shadab struck an unbeaten 21 off 10, hitting the winning six by slog-sweeping legspinner Aminul Islam over deep midwicket.

Aminul, one of the home team’s specialist bowlers, only came to bowl in the last over when Pakistan needed two runs for the victory.

Nawaz was unbeaten on 18 off 8.

Pakistan made a cautious start on the slow pitch before fast bowler Mustafizur Rahman rattled the stumps of Mohammad Rizwan for 11.

Captain Babar Azam dragged one on to his stump on 7, but Bangladesh failed to keep up that pressure to the end.

The damage was ultimately done when it was restricted to 127-7, continuing a poor batting record that haunted Bangladesh in the T20 World Cup. The team has lost six straight T20s.

Pakistan pacer Hasan Ali, with 3-23, triggered a collapse, leaving Bangladesh at 40-4 in the ninth over.

Afif Hossain top-scored for the side with 36 and Mahedi Hasan was unbeaten on 30 to help the side get past 100.

The second match is on Saturday.

IPL to have simultaneous games on last day of league stage

For the first time, the Indian Premier League (IPL) is going to experiment with two matches played simultaneously at different venues. This will take place on the last day of the league stage of the ongoing tournament.

The Board of Control for Cricket in India (BCCI) has agreed to such a request from official broadcaster Star India. The Indian Express understands that the board discussed the matter during the IPL Governing Council meeting a few days ago where a decision was taken to go ahead with the idea.

Hence, on the last day of the league stage of the ongoing season, instead of one afternoon match and one evening game, two matches will be held at the same time in the evening at two venues.

The rationale behind Star’s request is the lower TRP of afternoon games.

“In a first for the IPL, the last two league matches before the VIVO IPL 2021 Playoffs will be played concurrently. On the last day of the league stage (08.10.2021) of the ongoing season, instead of having one afternoon match and one evening match, two matches (SRH v MI and RCB v DC) will be played simultaneously at 7.30 PM IST (6.00 PM GST),” BCCI secretary Jay Shah said in a press release.

A BCCI official later revealed that broadcasters aren’t getting high TRP (Television Rating Points) for afternoon matches.

“The official broadcaster had asked BCCI whether they can have two games simultaneously in two different venues. The broadcasters have informed us that TRP for afternoon games is less compared to evening games. The BCCI can experiment with having two games simultaneously. As Star has multiple channels under their banner, they can provide live telecast of two games smoothly. So, BCCI has agreed to the request,” the board official told The Indian Express.

It is learnt that BCCI will take feedback from Star after the two games about the TRP generated. As the board is planning to have two new IPL teams next year, this could help it to conduct more games in fewer days. Till now, the BCCI had few double headers in the IPL, which made it tough for the cricketers given the harsh Indian summers.

“This could help us in our scheduling going ahead, as two new teams means more games. The BCCI will decide if such norms can be continued ahead,” the official added.

Money Heist finds a fan in Ananya Panday: ‘I love Denver and Nairobi, would want to play Tokyo’

We know that Money Heist is a global phenomenon with a fan list comprising of celebrities from across the world. And while we continue to count the notable names, here’s another addition to it from the Bollywood fraternity – Ananya Panday. The actor seems to be up-to-date with the events of Netflix’s crime drama.

Money Heist, originally called La Casa De Papel in Spanish, recently released part one of its fifth and final season. The five-episodes not just received a thumping response from the audience, but also left people emotional with the shocking death of one of its most loved characters. Amid this emotional roller-coaster, Ananya picked her favourite characters from the show.

In the exclusive video, Ananya takes a fun quiz where she chooses Denver “because he’s super hot and I love his personality, his laugh.” Nairobi came a close second who Ananya believes is a very strong woman. While she would wish to play Tokyo, she’d conduct a heist in Goa. “I’d go on a bike like in Dhoom and all. It’d be cool.”

Money Heist 5 part one took off from the cliffhanger from its previous season. After being trapped inside the Bank of Spain for over a 100 hours and losing one of its most loved members – Nairobi, the gang in red jumpsuits is up in arms against the new enemy – the army.

Lead by Sagasta, a commander of the Special Forces of the Spanish Army and joined by Gandia, the soldiers unleash mayhem on the robbers who are all on their own after their main man, The Professor has been kept captive by Alicia Sierra. What follows is a lot of gunshots, bullets and an emotional goodbye.

Money Heist 5 will release its last set of five episodes in the second part, on December 3.

Petrol to cost Rs1.50 cheaper

The Finance Division on Tuesday announced a reduction in the price of petrol by Rs1.50 per litre.

Consequently, petrol will now cost Rs118.30 per litre.

According to a notification: “Despite international price fluctuations in petroleum products and anticipated increase in future prices, the government has reduced the prices in order to provide maximum relief to the consumers.”

The government has also notified a change in price for high speed diesel (HSD), which has reduced by Rs1.50 to cost Rs115.03 per litre.

Similarly, the price of kerosene will also fall by Rs1.50, to cost Rs86.80 per litre.

Light diesel oil, meanwhile, will cost Rs1 cheaper, and will thus be available for Rs84.77 per litre.

The Oil and Gas Regulatory (OGRA) has suggested the Petroleum Division reduce the price of petrol by Rs3.5, of diesel by Rs5, of light diesel oil Rs2, and kerosene oil by Rs3, sources told Geo News on Monday.

In the last two weeks of August, the government, which revises the rate of petroleum products twice a month, announced that prices will remain the same for the rest of the month for petrol and high speed diesel.

On the other hand, the price of kerosene oil was increased by Rs0.81 per litre, while the price of light diesel had been increased by Rs1.10 per litre.