Exponential quadratic operators and evolution of bosonic systems coupled to a heat bath

被引：0
|
作者：
Ni, Xiao-Tong [1 ,2 ]
Liu, Yu-xi [3 ,4 ]
Kwek, L. C. [5 ,6 ,7 ]
Wang, Xiang-Bin [1 ,2 ,4 ]
机构：
[1] Tsinghua Univ, Dept Phys, Minist Educ, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Key Lab Atom & Nanosci, Minist Educ, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China
[4] Tsinghua Univ, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
[5] Nanyang Technol Univ, Natl Inst Educ, Singapore 637616, Singapore
[6] Nanyang Technol Univ, Inst Adv Studies, Singapore 637616, Singapore
[7] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117542, Singapore
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
SQUEEZED STATES; QUANTUM; DECOHERENCE; MOTION;
D O I：
10.1103/PhysRevA.81.062125
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using exponential quadratic operators, we present a general framework for studying the exact dynamics of system-bath interaction in which the Hamiltonian is described by the quadratic form of bosonic operators. To demonstrate the versatility of the approach, we study how the environment affects the squeezing of quadrature components of the system. We further propose that the squeezing can be enhanced when parity kicks are applied to the system.
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页数：4
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