Atoms falling into a black hole (BH) through a cavity are shown to enable coherent amplification of light quanta powered by the BH-gravitational vacuum energy. This process can harness the BH energy towards useful purposes, such as propelling a spaceship trapped by the BH. The process can occur via transient amplification of a signal field by falling atoms that are partly excited by Hawking radiation reflected by an orbiting mirror. In the steady-state regime of thermally equilibrated atoms that weakly couple to the field, this amplifier constitutes a BH-powered quantum heat engine. The envisaged effects substantiate the thermodynamic approach to BH acceleration radiation.

研究表明，通过空腔落入黑洞 (BH) 的原子可以实现由 BH 引力真空能驱动的光量子的相干放大。这个过程可以利用 BH 能量实现有用的目的，例如推动被 BH 困住的宇宙飞船。该过程可以通过由轨道镜反射的霍金辐射部分激发的下落原子对信号场的瞬态放大来实现。在与场弱耦合的热平衡原子的稳态状态下，该放大器构成了 BH 驱动的量子热机。设想的效果证实了 BH 加速辐射的​​热力学方法。