Enhancing nanomechanical squeezing by atomic interactions in a hybrid atom-optomechanical system

被引:12
作者
Mann, Niklas [1 ]
Thorwart, Michael [1 ]
机构
[1] Univ Hamburg, Inst Theoret Phys 1, Jungiusstr 9, D-20355 Hamburg, Germany
关键词
ENSEMBLE; CAVITY; STATES; NOISE;
D O I
10.1103/PhysRevA.98.063804
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In a hybrid atom-optomechanical system, the optical coupling of a mechanical mode of a nanomembrane in an optical cavity with a distant interacting atom gas permits highly nonclassical quantum many-body states. We show that the mechanical mode can be squeezed by the backaction of internal excitations of the atoms in the gas. A Bogoliubov approach reveals that these internal excitations form a fluctuating environment of quasiparticle excitations for the mechanical mode with a gaped spectral density. Nanomechanical squeezing arises due to quasiparticle excitations in the interacting atom gas when the mechanical frequency is close to resonance with the internal atomic transitions. Interestingly, nanomechanical squeezing is enhanced by atom-atom interactions.
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页数:7
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共 34 条
[11]   Cavity-assisted squeezing of a mechanical oscillator [J].
Jaehne, K. ;
Genes, C. ;
Hammerer, K. ;
Wallquist, M. ;
Polzik, E. S. ;
Zoller, P. .
PHYSICAL REVIEW A, 2009, 79 (06)
[12]  
Jöckel A, 2015, NAT NANOTECHNOL, V10, P55, DOI [10.1038/nnano.2014.278, 10.1038/NNANO.2014.278]
[13]   SQUEEZED SPIN STATES [J].
KITAGAWA, M ;
UEDA, M .
PHYSICAL REVIEW A, 1993, 47 (06) :5138-5143
[14]   Observation of a Superradiant Mott Insulator in the Dicke-Hubbard Model [J].
Klinder, J. ;
Kessler, H. ;
Bakhtiari, M. Reza ;
Thorwart, M. ;
Hemmerich, A. .
PHYSICAL REVIEW LETTERS, 2015, 115 (23)
[15]   Dissipative optomechanical squeezing of light [J].
Kronwald, Andreas ;
Marquardt, Florian ;
Clerk, Aashish A. .
NEW JOURNAL OF PHYSICS, 2014, 16
[16]   Arbitrarily large steady-state bosonic squeezing via dissipation [J].
Kronwald, Andreas ;
Marquardt, Florian ;
Clerk, Aashish A. .
PHYSICAL REVIEW A, 2013, 88 (06)
[17]   Spin squeezing in an ensemble of atoms illuminated with squeezed light [J].
Kuzmich, A ;
Molmer, K ;
Polzik, ES .
PHYSICAL REVIEW LETTERS, 1997, 79 (24) :4782-4785
[18]   Cavity-free quantum optomechanical cooling by atom-modulated radiation [J].
Lau, Hoi-Kwan ;
Eisfeld, Alexander ;
Rost, Jan-Michael .
PHYSICAL REVIEW A, 2018, 98 (04)
[19]   Macroscopic Quantum Superposition in Cavity Optomechanics [J].
Liao, Jie-Qiao ;
Tian, Lin .
PHYSICAL REVIEW LETTERS, 2016, 116 (16)
[20]   Nonequilibrium Quantum Phase Transition in a Hybrid Atom-Optomechanical System [J].
Mann, Niklas ;
Bakhtiari, M. Reza ;
Pelster, Axel ;
Thorwart, Michael .
PHYSICAL REVIEW LETTERS, 2018, 120 (06)