Quantum Computers: Noise Propagation and Adversarial Noise Models

Details Quantum Computers: Noise Propagation and Adversarial Noise Models Quantum Computers: Noise Propagation and Adversarial Noise Models

2009-04-21

arxiv.org/abs/0904.3265v1

Physics

Quantum Physics

50 pages

Scientific paper

In this paper we consider adversarial noise models that will fail quantum error correction and fault-tolerant quantum computation. We describe known results regarding high-rate noise, sequential computation, and reversible noisy computation. We continue by discussing highly correlated noise and the "boundary," in terms of correlation of errors, of the "threshold theorem." Next, we draw a picture of adversarial forms of noise called (collectively) "detrimental noise." Detrimental noise is modeled after familiar properties of noise propagation. However, it can have various causes. We start by pointing out the difference between detrimental noise and standard noise models for two qubits and proceed to a discussion of highly entangled states, the rate of noise, and general noisy quantum systems.

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