arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1812.09720quant-phphysics.optics
收藏

快光脉冲纳米机械谐振腔的态制备与层析成像

State preparation and tomography of a nanomechanical resonator with fast light pulses

Juha T. Muhonen, Giada R. La Gala, Rick Leijssen, Ewold Verhagen

摘要:

脉冲光机械测量能够实现压缩、非经典状态创建和无反作用感测。我们展示了一个低温纳米机械谐振器的脉冲测量与记录精度接近量子制度。我们用这些来制备热压缩和纯化的条件力学状态,并进行全状态断层扫描。这些演示利用纳米光子腔中的大光子-声子耦合,以达到9倍于机械零点振幅$x_\mathrm{zpf}$的单脉冲不精确度。我们研究了其他机械模式的影响,限制条件状态宽度为58 $x_\mathrm{zpf}$,并显示如何退相干导致的状态增长的时间。

英文摘要:

Pulsed optomechanical measurements enable squeezing, non-classical state creation and backaction-free sensing. We demonstrate pulsed measurement of a cryogenic nanomechanical resonator with record precision close to the quantum regime. We use these to prepare thermally squeezed and purified conditional mechanical states, and to perform full state tomography. These demonstrations exploit large photon-phonon coupling in a nanophotonic cavity to reach a single-pulse imprecision of 9 times the mechanical zero-point amplitude $x_\mathrm{zpf}$. We study the effect of other mechanical modes which limit the conditional state width to 58 $x_\mathrm{zpf}$, and show how decoherence causes the state to grow in time.

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。

↑