论文标题
纯净反应控制中量子性的签名
A signature of quantumness in pure decoherence control
论文作者
论文摘要
我们研究了一种降低的降低方案，该方案涉及在所有量子环境相互作用的一般框架中，以相等的叠加为基础上进行了中间测量，从而导致Qubit纯纯净的逆转。在什么情况下，无论执行测量时间如何，该方案总是平均导致连贯性增长，并证明其广泛的适用性。此外，我们发现观察平均相干性是高度量子效应，这是由于在哈密顿量中不同术语的不信誉而产生的。我们显示了该方案的应用所影响的连贯性的多样性，该方案倾向于增益而不是损失，这是在不符合换向条件的自旋玻色模型的变体上。
We study a decoherence reduction scheme that involves an intermediate measurement on the qubit in an equal superposition basis, in the general framework of all qubit-environment interactions that lead to qubit pure decoherence. We show under what circumstances the scheme always leads to a gain of coherence on average, regardless of the time at which the measurement is performed, demonstrating its wide range of applicability. Furthermore, we find that observing an average loss of coherence is a highly quantum effect, resulting from non-commutation of different terms in the Hamiltonian. We show the diversity of behavior of coherence as effected by the application of the scheme, which is skewed towards gain rather than loss, on a variant of the spin-boson model that does not fulfill the commutation condition.
