arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1201.6293cond-mat.mes-hallquant-ph
收藏

电路光力学中的量子换能器

Quantum transducer in circuit optomechanics

Nicolas Didier, Stefano Pugnetti, Yaroslav M. Blanter, Rosario Fazio

摘要:

机械谐振器是一种具有巨大潜力的宏观量子物体。它们耦合到许多不同的量子系统,如自旋、光子、冷原子和玻色-爱因斯坦凝聚体。然而,由于量子体系中的微小运动,测量和操纵声子态是困难的。另一方面,微波谐振器是强大的量子器件,因为任意的光子态可以合成和测量与量子层析成像。我们发现,一个线性耦合,强大的和控制的门电压,机械和微波谐振器之间,使创建量子声子态,操纵声子和光子之间的混合纠缠,并产生两个机械振荡器之间的纠缠。在电路量子光力学中,机械谐振器充当辅助量子系统和微波谐振器之间的量子换能器,微波谐振器用作量子总线。

英文摘要:

Mechanical resonators are macroscopic quantum objects with great potential. They couple to many different quantum systems such as spins, optical photons, cold atoms, and Bose Einstein condensates. It is however difficult to measure and manipulate the phonon state due to the tiny motion in the quantum regime. On the other hand, microwave resonators are powerful quantum devices since arbitrary photon state can be synthesized and measured with a quantum tomography. We show that a linear coupling, strong and controlled with a gate voltage, between the mechanical and the microwave resonators enables to create quantum phonon states, manipulate hybrid entanglement between phonons and photons and generate entanglement between two mechanical oscillators. In circuit quantum optomechanics, the mechanical resonator acts as a quantum transducer between an auxiliary quantum system and the microwave resonator, which is used as a quantum bus.

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。

↑