Cavity-mediated collective laser-cooling of a non-interacting atomic gas inside an asymmetric trap to very low temperatures
Cavity-mediated collective laser-cooling of a non-interacting atomic gas inside an asymmetric trap to very low temperatures
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DOI：
10.1080/09500340.2018.1444800
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发表时间：
2018-01-01
影响因子：
1.3
通讯作者：
Beige, Almut
中科院分区：
文献类型：
--
作者：
Kim, Oleg;Deb, Prasenjit;Beige, Almut
In this paper, we identify a many-particle phonon expectation value zeta with the ability to induce collective dynamics in a non-interacting atomic gas inside an optical cavity. We then propose to utilise this expectation value to enhance the laser cooling of many atoms through a cyclic two-stage process which consists of cooling and displacement stages. During cooling stages, short laser pulses are applied. These use zeta as a resource and decrease the vibrational energy of the atomic gas by a fixed amount. Subsequent displacement stages use the asymmetry of the trapping potential to replenish the many-particle phonon expectation value zeta. Alternating both stages of the cooling process is shown to transfer the atomic gas to a final temperature which vanishes in the infinitely-many particle limit.
