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arXiv 1812.04579quant-ph
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机械类Fock态的耗散合成

Dissipative synthesis of mechanical Fock-like states

Matteo Brunelli, Oussama Houhou

摘要:

对纳米机械运动的真正量子特征的观察是基础量子科学和应用量子科学的关键目标。为此,一个有前途的方法是在耗散的存在下,通过与光子环境的可调谐耦合的非经典功能的稳定。在这里,我们提出了一个方案,结合耗散压缩与机械非线性稳定的任意近似(位移)机械Fock态的任何数量。我们考虑由三个控制激光器驱动的光机械系统-在腔谐振和在两个机械边带-将腔场的振幅耦合到谐振器的位置和位置的平方。当共振驱动的振幅被调谐到一些特定的值时,机械稳态被发现在有限数量的Fock态的(位移)叠加中,对于足够大的压缩,任何所需数量的(位移)Fock态都可以实现近单位保真度。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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