标题： 量子比特操作由于布洛赫-西格伯特振荡的基本限制 显示英文标题

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

摘要： 我们证明，如果Rabi频率与玻尔频率相当，使得旋转波近似不适用时，Rabi振荡中会出现额外的振荡。 我们讨论了激发度对场相位的敏感性可能对涉及低频跃迁的量子比特精确旋转施加严格的限制。 我们提出了一种在原子束中观察此效应的方案。 显示英文摘要

摘要： 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.