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Published on: November 1, 2013
Fault tolerant quantum computation with nondeterministic gates
Ying Li1, Sean D Barrett, Thomas M Stace
1Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore.
Abstract:
In certain approaches to quantum computing the operations between qubits are nondeterministic and likely to fail. For example, a distributed quantum processor would achieve scalability by networking together many small components; operations between components should be assumed to be failure prone. In the ultimate limit of this architecture each component contains only one qubit. Here we derive thresholds for fault-tolerant quantum computation under this extreme paradigm. We find that computation is supported for remarkably high failure rates (exceeding 90%) providing that failures are heralded; meanwhile the rate of unknown errors should not exceed 2 in 10(4) operations.
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