Realization of quantum process tomography in NMR

Details Realization of quantum process tomography in NMR Realization of quantum process tomography in NMR

2000-12-06

arxiv.org/abs/quant-ph/0012032v1

Phys. Rev. A 64, 012314 (2001)

Physics

Quantum Physics

8 pages, 7 EPS figures, REVTeX

Scientific paper

10.1103/PhysRevA.64.012314

Quantum process tomography is a procedure by which the unknown dynamical evolution of an open quantum system can be fully experimentally characterized. We demonstrate explicitly how this procedure can be implemented with a nuclear magnetic resonance quantum computer. This allows us to measure the fidelity of a controlled-not logic gate and to experimentally investigate the error model for our computer. Based on the latter analysis, we test an important assumption underlying nearly all models of quantum error correction, the independence of errors on different qubits.

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