A simple formula for the average gate fidelity of a quantum dynamical operation

Details A simple formula for the average gate fidelity of a quantum dynamical operation A simple formula for the average gate fidelity of a quantum dynamical operation

2002-05-07

arxiv.org/abs/quant-ph/0205035v2

Phys. Lett. A 303 (4): 249-252 (2002)

Physics

Quantum Physics

3 pages, references and discussion of prior work updated

Scientific paper

10.1016/S0375-9601(02)01272-0

This note presents a simple formula for the average fidelity between a unitary quantum gate and a general quantum operation on a qudit, generalizing the formula for qubits found by Bowdrey et al [Phys. Lett. A 294, 258 (2002)]. This formula may be useful for experimental determination of average gate fidelity. We also give a simplified proof of a formula due to Horodecki et al [Phys. Rev. A 60, 1888 (1999)], connecting average gate fidelity to entanglement fidelity.

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