Interferometric Unruh Detectors for Bose-Einstein Condensates
Interferometric Unruh Detectors for Bose-Einstein Condensates
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DOI：
10.1103/physrevlett.125.213603
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发表时间：
2020-11-20
影响因子：
8.6
通讯作者：
Weinfurtner, Silke
中科院分区：
文献类型：
--
作者：
Gooding, Cisco;Biermann, Steffen;Weinfurtner, Silke
安鲁效应预测了在真空中移动的加速探测器的热响应。在这里，我们提出了一种干涉方案，使用耦合到玻色-爱因斯坦凝聚体（BEC）的局域激光来观察圆形昂鲁效应的模拟。凝聚体中的量子涨落由有效的相对论场论控制，并且如所证明的，耦合激光场充当其有效的Unruh-DeWitt探测器。 BEC 中的有效光速比声速降低了 12 个数量级。对于接近声速行进的探测器，在模拟系统中观察安鲁效应在实验上变得可行。
The Unruh effect predicts a thermal response for an accelerated detector moving through the vacuum. Here we propose an interferometric scheme to observe an analogue of the circular Unruh effect using a localized laser coupled to a Bose-Einstein condensate (BEC). Quantum fluctuations in the condensate are governed by an effective relativistic field theory, and as demonstrated, the coupled laser field acts as an effective Unruh-DeWitt detector thereof. The effective speed of light is lowered by 12 orders of magnitude to the sound velocity in the BEC. For detectors traveling close to the sound speed, observation of the Unruh effect in the analogue system becomes experimentally feasible.