论文标题

现场辅助提取和量子相干性的肿胀,用于移动unruh-dewitt探测器

Field assisted extraction and swelling of quantum coherence for moving Unruh-DeWitt detectors

论文作者

Kollas, Nikolaos K., Moustos, Dimitris, Blekos, Kostas

论文摘要

我们研究了以两级系统模型的Unruh-Dewitt检测器的运动影响,当它与1+1 Minkowski SpaceTime中的无质量标量相干场相互作用时提取的相干性量。我们观察到,与在静止处的检测器相比,对于田间的初始能量和相互作用持续时间的某些值,对于以恒定速度或均匀加速度移动的检测器移动的量都更大。这种“连贯性”的“肿胀”(对于增加速度或加速度值的增加而变得更加激烈),大多在短时间内观察到,当田间的能量与检测器的能量更大时,并且持续时间更长,但场能较小,但场能较小。结果,损失相干性的速率有时对于移动检测器而言速度要慢,而在静止状态下,探测器的速度慢。

We study the effects of motion for an Unruh-DeWitt detector, modeled as a two-level system, on the amount of coherence extracted, when it interacts with a massless scalar coherent field in 1+1 Minkowski spacetime. We observe that compared to a detector at rest, for certain values of the initial energy of the field and the interaction duration, the amount is larger for both a detector moving with a constant speed or uniform acceleration. This "swelling" of coherence, which becomes more intense for increasing values of velocity or acceleration, is mostly observed for short durations, when the energy of the field is larger compared to that of the detector, and for longer durations but smaller field energies. As a consequence, the rate at which coherence is lost, is sometimes slower for a moving detector than for a detector at rest.

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