Fundamental limitation on qubit operations due to the Bloch-Siegert Oscillation

Details Fundamental limitation on qubit operations due to the Bloch-Siegert Oscillation Fundamental limitation on qubit operations due to the Bloch-Siegert Oscillation

2002-12-20

arxiv.org/abs/quant-ph/0212121v1

Physics

Quantum Physics

4 pages, 2 figs; to appear in the Proceedings of the Quantum Communication, Measurement and Computing (QCMC'02)

Scientific paper

We show that if the Rabi frequency is comparable to the Bohr frequency so that the rotating wave approximation is inappropriate, an extra oscillation is present with the Rabi oscillation. We discuss how the sensitivity of the degree of excitation to the phase of the field may pose severe constraints on precise rotations of quantum bits involving low-frequency transitions. We present a scheme for observing this effect in an atomic beam.

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