Chinese scientists achieve quantum computational advantage

[FIIL]

Look I don't care what the media says they all have there own agenda. Chinese, Indian, Russian, and American media all have their own agenda and I seen each and every one of them have blantly bias or wrong reporting so it's not one sided

Well, I don't doubt Pan's ability, but IBM is hoping by 2023 to have fully commercialized quantum computers. Google won't be far behind either.

Good for IBM. I don't want to say it is too optimistic but from what I know. The commercialized quantum computers are almost as far as fusion power generation.

 

[Han Patriot]

Good for IBM. I don't want to say it is too optimistic but from what I know. The commercialized quantum computers are almost as far as fusion power generation.

That's pretty accurate, most quantum computation is just in its infancy

 

[Beast]

Why focus on Quantum supremacy? Quantum supremacy is necessary only to justify the investment in Quantum Computing to prove conclusively that conventional computing cannot match quantum computing.
I never claimed real world - I said Google Sycamore is programmable while Pan Jianwei's experiment isn't programmable.

To prove my point I mentioned Cirq, Google's Quantum Programing Language, I mentioned OpenFermion google's Cirq library for molecule simulation.
There are similar libraries for ML and AI - but you choose to discredit all this evidence and stick to your claim of Chinese supremacy in Quantum computing.

So Google = Programable Super Conducting Quantum Processor

China = Non programable Light show with one specific application

Disproving me should be easy share with us Pan Jianwei's Quantum programming language, architecture and libraries.
Show us Pan Jianwei Quantum processor one that isn't laser, mirrors, crystals and screens.

Physicists in China challenge Google’s ‘quantum advantage’

Photon-based quantum computer does a calculation that ordinary computers might never be able to do.

www.nature.com

 

[Han Patriot]

Physicists in China challenge Google’s ‘quantum advantage’

Photon-based quantum computer does a calculation that ordinary computers might never be able to do.

www.nature.com

Nature is a Chinese institution now, just like WHO.

 

[JSCh]

Experiments first verify distributed quantum phase estimation

Professor PAN Jianwei and his colleges from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) have achieved the experimental verification of distribution quantum phase estimation for the first time. This work was published on Nature Photonics.

www.eurekalert.org

 

[艹艹艹]

China releases new quantum computing software​

2022-02-17 20:53:46

BEIJING, Feb. 17 (Xinhua) -- China has released a new quantum computing programming software named "isQ-Core" and deployed it to the country's superconducting quantum hardware platform.

It represents a significant step forward in the combination of home-grown quantum computing hardware and software, said its primary developer, the Institute of Software under the Chinese Academy of Sciences (CAS).

According to the institute, the isQ-Core has the advantages of simplicity, ease-of-use, high efficiency, solid scalability, and high reliability.

It will provide support for scientists to conduct quantum computing theory and application research, said the institute in a statement Thursday.

China has achieved rapid quantum computer development, with the launches of "Jiuzhang," "Zuchongzhi," and "Zuchongzhi 2" in recent years. Similar to conventional computers, quantum computers also need software to manage hardware devices, run applications, and provide a user interface.

Researchers announced that they have deployed isQ-Core on a CAS quantum computing cloud platform, currently the largest in China in terms of hardware scale.

 

[JSCh]

Two research teams have created arrays of atoms containing either two different elements or two different isotopes. These mixed-species arrays may be a promising platform for quantum computing.

https://twitter.com/x/status/1496953077231874048

 

[JSCh]

Is Math the Key to Quantum Entanglement Protection? A new experiment reveals how powerfully topology can shelter delicate photonic quantum-computer states.

Read more: https://bit.ly/3JVOuzZ

https://twitter.com/x/status/1497320602352431115

 

[Song Hong]

As days goes by, I start to be quantum computing skeptic. I cannot see other than cracking SHOR, what else can quantum computing do.

 

[JSCh]

Breakthrough achieved in quantum computing​

By ZHANG ZHIHAO | China Daily | Updated: 2022-06-09 09:30

Chinese physicists have created a large-scale, ordered and tunable lattice of Majorana zero mode, one of the most exotic phenomena in condensed matter physics－the study of the physical properties of matter, according to a study published in the journal Nature on Wednesday.

Experts said the study may pave the way for more reliable and fault-tolerant quantum computers that can facilitate discoveries in medicine, chemistry, materials science and other fields. However, designing a quantum computer using Majorana zero mode is still in its infancy, and its feasibility and practicality may take decades of research to mature, they added.

In 1937, renowned Italian physicist Ettore Majorana hypothesized that there is a particle, later called Majorana fermion, that can be both an elementary particle and its own antiparticle at the same time. Typically, when a particle and its antiparticle collide, they would destroy each other and release a large amount of energy, but Majorana fermion is an exception to this rule.

After more than eight decades, scientists have yet to find the Majorana particle in the universe.

However, researchers of condensed matter physics have discovered that the analogy of Majorana fermion can exist to some extent in superconductors in the form of Majorana zero mode.

Gao Hongjun, vice-president of the Chinese Academy of Sciences, said Majorana zero mode has been an exciting and rapidly developing field in condensed matter physics given its potential to revolutionize quantum computation.

For instance, one of the biggest engineering challenges of quantum computers is decoherence－external disturbances that interfere with the delicate quantum states of qubits, leading to the creation and accumulation of errors. A qubit is the basic unit of information in quantum computers for storage and calculation, similar to the ones and zeros used in standard computers.

Fang Zhong, the director of the Institute of Physics at the CAS, said the current solution to quantum decoherence is to use a large number of qubits as a buffer to calibrate the ones that do calculations. But manipulating large numbers of qubits is notoriously difficult, which severely limits the practicality and scalability of quantum computers, he said.

An intriguing part of Majorana zero modes is that they are inherently resilient to decoherence and have a significantly lower error rate compared to qubits created using other methods thanks to a unique property called topological protection.

Therefore, if scientists can create logical qubits using Majorana zero modes, they can theoretically make fault-tolerant topological quantum computers that are more efficient and practical, Fang said.

Microsoft's Azure Quantum program is hoping to build a prototype of this type of quantum machine. However, many experts have noted that the process is still in its early theoretical phase, and the effort is considered "a high risk, high reward" endeavor.

Milestone study​

Gao called the Chinese study a milestone as it essentially laid the first solid step toward a topological quantum computer.

By placing a superconductor made of iron, lithium and arsenic in magnetic fields and at a temperature close to-273.15 C, or absolute zero, Chinese physicists discovered that they could create an ordered lattice of Majorana zero mode on the sample material.

Su Gang, the director of the Bureau of Frontier Sciences and Education at the CAS, said just a few years ago, it would have taken enormous effort just to create a single Majorana zero mode. Now, scientists can make rows of it, allowing them to study the interactions of these elusive physical phenomena.

For example, by increasing the strength of the magnetic fields, scientists discovered that the number of Majorana zero modes within a certain area can actually increase.

"The significance of the study is that for the first time, we have achieved a large-scale, highly ordered and tunable lattice of Majorana zero mode, which has laid a solid foundation for topological quantum computers," he said.

Quantum computing is widely regarded as one of the most disruptive technologies in the world given its ability to harness the laws of quantum mechanics and solve calculations too complex for even the most powerful conventional supercomputers, such as modeling chemical reactions and optimizing financial decisions.

According to a 2021 report by global consulting firm McKinsey&Company, quantum computing will have a conservative estimated value of up to $700 billion by 2035 for industries such as pharmaceuticals, chemicals, automotive and finance. However, quantum machines won't replace ordinary computers because people's everyday software doesn't require such computing power.

 

[JSCh]

In 2019, Google's quantum computer Sycamore performed in 200 seconds an abstruse calculation they said would tie up a supercomputer for 10,000 years.

Now, scientists in China have done the computation in a few hours with ordinary processors.

https://twitter.com/x/status/1559382753313017858

 

[Song Hong]

In 2019, Google's quantum computer Sycamore performed in 200 seconds an abstruse calculation they said would tie up a supercomputer for 10,000 years.

Now, scientists in China have done the computation in a few hours with ordinary processors.

https://twitter.com/x/status/1559382753313017858

Good ---- then will China stop building anymore "traditional supercomputer" ?

I did QC for 3 years.

I am now a QC skeptic.

 

[JSCh]

Good ---- then will China stop building anymore "traditional supercomputer" ?

I am a QC skeptic.

FYI, it is about a paper published in "Physical Review Letters" that details beating Google quantum computer with a "traditional supercomputer"

https://twitter.com/x/status/1555463061062012928

 

[Song Hong]

FYI, it is about a paper published in "Physical Review Journal" that details beating Google quantum computer with a "traditional supercomputer"

https://twitter.com/x/status/1555463061062012928

QC is only capable of a very narrowly defined specific purpose computation, while traditional computer can do all numerical analysis.

Meanwhile you need large number of Qbits that are extremely unstable to maintain in their respective quantum states.

 

[JSCh]

QC is only capable of a very narrowly defined specific purpose computation, while traditional computer can do all numerical analysis.

Meanwhile you need large number of Qbits that are extremely unstable to maintain in their respective quantum states.

Yes, quantum computer is limited in its application.

It was never meant to replace traditional computer.

But it has potential in performing extremely better than traditional computer in certain computation that could bring huge benefit.

In another word, there are things that quantum is bad at compare to traditional, but quantum computer could be magnitude better on certain things that traditional is bad at.