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Adaptive Quantum Computation, Constant Depth Quantum Circuits and Arthur-Merlin Games

Barbara M. Terhal, David P. DiVincenzo

quant-pharXiv:quant-ph/0205133

Abstract

We present evidence that there exist quantum computations that can be carried out in constant depth, using 2-qubit gates, that cannot be simulated classically with high accuracy. We prove that if one can simulate these circuits classically efficiently then the complexity class BQP is contained in AM.

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