Modulated light potentials for state manipulation of quasiparticles in ultra-cold Bose gases

被引：1
作者：
Maass, Benjamin [1 ]
Hartley, Daniel [1 ]
Busch, Kurt [1 ,2 ]
Raetzel, Dennis [1 ]
机构：
[1] Humboldt Univ, Inst Phys, AG Theoret Opt & Photon, Newtonstr 15, D-12489 Berlin, Germany
[2] Max Born Inst, Max Born Str 2A, D-12489 Berlin, Germany
来源：
NEW JOURNAL OF PHYSICS | 2022年 / 24卷 / 04期
关键词：
Bose-Einstein condensation; cavity optomechanics; quasiparticles; phonons; sensing; EINSTEIN CONDENSATE; COLLECTIVE EXCITATIONS; FESHBACH RESONANCES; INTERFEROMETRY; CONSTANT;
D O I：
10.1088/1367-2630/ac5e17
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Ensembles of ultra-cold atoms have been proven to be versatile tools for high precision sensing applications. Here, we present a method for the manipulation of the state of trapped clouds of ultra-cold bosonic atoms. In particular, we discuss the creation of coherent and squeezed states of quasiparticles and the coupling of quasiparticle modes through an external cavity field. This enables operations like state swapping and beam splitting which can be applied to realize a Mach-Zehnder interferometer (MZI) in frequency space. We present two explicit example applications in sensing: the measurement of the healing length of the condensate with the MZI scheme, and the measurement of an oscillating force gradient. Furthermore, we calculate fundamental limitations based on parameters of state-of-the-art technology.
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页数：25
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