Fedoseev Vitaly, Luna Fernando, Hedgepeth Ian, Löffler Wolfgang, Bouwmeester Dirk
Huygens-Kamerlingh Onnes Laboratorium, Leiden University, 2333 CA, Leiden, Netherlands.
Department of Physics, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett. 2021 Mar 19;126(11):113601. doi: 10.1103/PhysRevLett.126.113601.
In multimode optomechanical systems, the mechanical modes can be coupled via the radiation pressure of the common optical mode, but the fidelity of the state transfer is limited by the optical cavity decay. Here we demonstrate stimulated Raman adiabatic passage (STIRAP) in optomechanics, where the optical mode is not populated during the coherent state transfer between the mechanical modes avoiding this decay channel. We show a state transfer of a coherent mechanical excitation between vibrational modes of a membrane in a high-finesse optical cavity with a transfer efficiency of 86%. Combined with exceptionally high mechanical quality factors, STIRAP between mechanical modes can enable generation, storage, and manipulation of long-lived mechanical quantum states, which is important for quantum information science and for the investigation of macroscopic quantum superpositions.
在多模光机械系统中，机械模式可通过公共光学模式的辐射压力实现耦合，但状态转移的保真度受光学腔衰减的限制。在此，我们展示了光机械中的受激拉曼绝热通道（STIRAP），即在机械模式之间的相干态转移过程中，光学模式未被激发，从而避开了这一衰减通道。我们展示了在高精细度光学腔中，膜的振动模式之间相干机械激发的状态转移，转移效率达86%。结合极高的机械品质因数，机械模式之间的STIRAP能够实现长寿命机械量子态的产生、存储和操控，这对量子信息科学以及宏观量子叠加态的研究具有重要意义。
