### By Garg - 18.01.2020

## Google quantum computer 2020

9, , PM. In October , researchers at Google announced to great fanfare that their embryonic quantum computer had solved a. Google AI Quantum is advancing quantum computing by developing quantum processors and novel quantum algorithms to help researchers and developers.

Share via E-Mail Applied mathematician Peter Shor worked out how to overcome a major problem in quantum computing.

Then in25 years google quantum computer 2020 this month, applied mathematician Peter Shor published a paper 1 that changed that perception. But quantum states are notoriously vulnerable to noise, leading to loss of information. His error-correction technique google quantum computer 2020 which detects errors caused by noise — showed how to make quantum information more robust.

Beyond quantum supremacy: the hunt for useful quantum computers Shor, who is now google quantum computer 2020 the Massachusetts Institute of Technology in Cambridge and is also a published poethad shocked the physics and computer-science worlds the previous year, when he found 2 the first potentially useful — but ominous — way to use a hypothetical quantum computer.

Most Internet traffic today is secured by encryption techniques based on large prime numbers. Cracking those codes is hard because classical computers are slow at factoring large products.

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Quantum computers are now a realityalthough they are still too rudimentary to factor numbers of more than two digits. But it is only a google quantum computer 2020 of time until quantum computers threaten Internet encryption.

Nature caught up with Shor to ask him about the impact of his work — and where Internet security is heading.

Before your factoring algorithm, were quantum computers mostly a theoretical curiosity?

google quantum computer 2020 My paper certainly gave people an idea that these machines could do something useful. Computer scientist Daniel Simon, in a precursor of my result, solved a problem that he came up with that shows that quantum computers are exponentially faster [than google quantum computer 2020 computers].

## Google's quantum computer achieves chemistry milestone

What was the reaction to your announcement of the factoring algorithm? At first, I had only an intermediate result. The news spread amazingly fast, and that weekend, computer scientist Umesh Vazirani called me. And in those five days, I had solved factoring as well, google quantum computer 2020 I could tell Umesh how to do it.

All sorts of people were asking me for my paper before I had even finished writing it, so Google quantum computer 2020 had to send them an incomplete draft.

But many experts still thought that quantum computers would lose information before you can actually finish your computation?

## Finnish researchers claim quantum computing breakthrough

One of the objections was that in read article mechanics, if you measure a system, you inevitably disturb it.

I showed how to measure the error without measuring google quantum computer 2020 computation — and then you can correct the error and not destroy the computation. After my paper on error correction, some of the sceptics were convinced that maybe quantum computing might be doable.

What is the difference? When you write down google quantum computer 2020 algorithm for a quantum computer, you assume that the qubits [the quantum version of a classical bit of information] are noiseless; these noiseless qubits that are described by the algorithm are the logical qubits.

Hello quantum world! Google publishes landmark quantum supremacy claim A physical qubit google quantum computer 2020 one of the noisy qubits in our quantum computer.

New Quantum Computers - Quantum Computing NewsTo run our algorithm without making any errors, we need to use the physical google quantum computer 2020 to encode logical qubits, using a quantum error-correcting code.

The best way we know how to do this has a fairly large overhead, read article many physical qubits google quantum computer 2020 each logical qubit.

It is quite complicated to work out how many more qubits are needed for the technique.

If you want to build a google quantum computer 2020 computer using surface code — the best google quantum computer 2020 right now — for every logical qubit, you need about physical qubits, maybe more. What was your reaction? It google quantum computer 2020 that quantum computers can do things better than classical computers — at least, for a very contrived problem.

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But also they have a very impressive quantum computer. It still needs to be a lot better before it can do anything interesting.

At first, google quantum computer 2020 computers will be slow. I think we have post-quantum cryptosystems that you could replace RSA with.

Quantum supremacy -- GoogleRSA is not the google quantum computer 2020 problem right now. The big problem is that there are other ways to break Internet security, such as badly programmed software, viruses, sending information to some not entirely honest player.

I think the only obstruction to replacing Google quantum computer 2020 with a secure post-quantum cryptosystem will be will-power and programming time.

There was an enormous amount of effort put into fixing the Year bug. If we wait around too long, it will https://inform-crypt-re.site/2020/upcoming-ipo-2020-in-tamil.html too late.

This interview has been edited for length and clarity.

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