期刊
PHYSICAL REVIEW A
卷 106, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.033509
关键词
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资金
- NNSFC [11974009]
- Chengdu technological innovation RD project [2021-YF05-02416-GX]
- Science Foundation of Sichuan Province of China [2018JY0180]
- Polish National Science Centre (NCN) under Maestro Grant [DEC-2019/34/A/ST2/00081]
- Nippon Telegraph and Telephone Corporation (NTT) Research
- Japan Science and Technology Agency (JST) [JPMJMS2061]
- Japan Society for the Promotion of Science (JSPS) [JP20H00134]
- Army Research Office (ARO) [W911NF18-1-0358]
- Asian Office of Aerospace Research and Development (AOARD) [FA2386-20-1-4069]
- Foundational Questions Institute Fund (FQXi) [FQXi-IAF19-06]
This study proposes a method to achieve simultaneous ground-state refrigeration of multiple vibrational modes and improve cooling performance by introducing an auxiliary mechanical coupling. The amplification of the net-refrigeration rates by more than six orders of magnitude is observed when the auxiliary mechanical coupling is turned on. The research also reveals the relation between simultaneous ground-state cooling and auxiliary mechanical coupling.
The simultaneous ground-state refrigeration of multiple vibrational modes is a prerequisite for observing significant quantum effects of multiple-vibration systems. Here we propose how to realize a large amplification in the net-refrigeration rates based on cavity optomechanics and to largely improve the cooling performance of multivibration modes beyond the resolved-sideband regime. By employing an auxiliary mechanical coupling (AMC) between two mechanical vibrations, the dark mode, which is induced by the coupling of these vibrational modes to a common optical mode and cuts off cooling channels, can be fully removed. We use fully analytical treatments for the effective mechanical susceptibilities and net-cooling rates and find that when the AMC is turned on, the amplification of the net-refrigeration rates by more than six orders of magnitude can be observed. In particular, we reveal that the simultaneous ground-state cooling beyond the resolved-sideband regime arises from the introduced AMC, without which it vanishes. Our work paves the way for quantum control of multiple vibrational modes in the bad-cavity regime.
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