标题： 机械福克态的耗散合成 显示英文标题

标题： Dissipative synthesis of mechanical Fock-like states

摘要： 观察纳米机械运动的真实量子特性是基础和应用量子科学的一个关键目标。 为此，一种有前景的方法是通过可调谐的光子环境耦合，在耗散存在的情况下稳定非经典特性。 在此，我们提出了一种方案，将耗散压缩与机械非线性相结合，以稳定任意近似的（位移）机械福克态。 我们考虑一个由三个控制激光驱动的光机械系统——在腔体共振频率和两个机械边带处——这些激光将腔场的振幅与谐振器的位置和位置平方耦合。 当共振驱动的振幅被调节到某些特定值时，机械稳态被发现为有限数量的福克态的（位移）叠加态，对于足够大的压缩，其与任何所需数量的（位移）福克态的保真度接近于单位。 显示英文摘要

摘要： The observation of genuine quantum features of nano-mechanical motion is a key goal for both fundamental and applied quantum science. To this end, a promising approach is the stabilization of nonclassical features in the presence of dissipation, by means of the tunable coupling with a photonic environment. Here we present a scheme that combines dissipative squeezing with a mechanical nonlinearity to stabilize arbitrary approximations of (displaced) mechanical Fock state of any number. We consider an optomechanical system driven by three control lasers--at the cavity resonance and at the two mechanical sidebands--that couple the amplitude of the cavity field to the resonator's position and position squared. When the amplitude of the resonant drive is tuned to some specific values, the mechanical steady state is found in a (displaced) superposition of a finite number of Fock states, which for large enough squeezing achieves near-unit fidelity with a (displaced) Fock state of any desired number.