Texas A&M University, College Station, Texas 77843, USA.
University of Alberta, Edmonton T6G 2E1, Canada.
Phys Rev Lett. 2018 Aug 17;121(7):071301. doi: 10.1103/PhysRevLett.121.071301.
We find that uniformly accelerated motion of a mirror yields excitation of a static two-level atom with simultaneous emission of a real photon. This occurs because of virtual transitions with probability governed by the Planck factor involving the photon frequency ν and the Unruh temperature. The result is different from the Unruh radiation of an accelerated atom, which is governed by the frequency of the atom, ω, rather than frequency of the emitted photon. We also find that the excitation probability oscillates as a function of the atomic position because of interference between contributions from the waves incident on and reflected from the mirror.
我们发现，镜子的匀加速运动会激发一个静态的二能级原子，并同时发射一个实光子。这是因为虚跃迁的概率受到普朗克因子的支配，其中涉及光子频率 ν 和 Unruh 温度。这个结果与加速原子的 Unruh 辐射不同，后者由原子的频率 ω 而不是发射光子的频率决定。我们还发现，由于入射波和从镜子反射的波之间的干涉，激发概率会随着原子位置的变化而振荡。
