1/9/2024 0 Comments Tree quantum error correctionYou can also now check out our paper, “ Benchmarking near-term devices with quantum error correction” that has just been published in the journal Quantum Science and Technology. To see it in action, you can read the relevant section of the Qiskit textbook. It is simple enough that it can be run on current devices, and used to see how well the ideas of quantum error correction actually work. To store a bit you simply repeat the desired value many times, to make it unlikely that that the majority of copies will get garbled by errors. The repetition code uses multiple physical qubits to simulate a logical bit, rather than a logical qubit. Specifically, it helps set up and analyze instances of the so called ‘repetition code,” the simplest example of something that uses the principles of quantum error correction to store information and protect it from errors. The module has all of the basic tools you need to create experimental tests of quantum error correction. This was one of the main motivations for creating the topological_codes module in Qiskit. However, given the right resources and tools, this is something that everyone else can have a go at as well. Using prototype quantum computers for science is obviously something that is easier when you are a professional scientist. These are now among the more than 200 papers that have been written by scientists around the world who have performed experiments on IBM’s quantum devices. So I started to probe this particular corner of quantum theory: if we implement elements of quantum error correction on real devices, do they behave as we would expect them to? At that time, I worked at the University of Basel and primarily did research on quantum error correction - ensuring that we don’t lose quantum information to the effects of noise and quantum decoherence. It was in 2016 that IBM handed this opportunity over to the world. With them, we have an opportunity to test whether quantum theory continues to hold in this unexplored territory. They represent the frontier of what we have been able to probe experimentally. Never have we had such control over such a large quantum system. From that perspective, their size and precision is very impressive. Instead, we can think of these devices as pieces of experimental physics equipment that we can run tests on. The limited number of qubits means that they can’t do much, and the effect of errors means they can’t do even that very well. When thinking of these current devices as a computer, you have to think of them as pretty bad computers. No world crisis will be solved with a current quantum computer. A quantum computer called ibmq_16_melbourneįirst, we need to be realistic with our scope.
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