Perfect squeezing by damping modulation in circuit quantum electrodynamics

被引：35

作者：

Didier, Nicolas ^{[1
,2
]}

Qassemi, Farzad ^{[1
]}

Blais, Alexandre ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICAL REVIEW A | 2014年 / 89卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

NUMBER STATES; AMPLIFICATION; BITS;

D O I：

10.1103/PhysRevA.89.013820

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dissipation-driven quantum state engineering uses the environment to steer the state of quantum systems and preserve quantum coherence in the steady state. We show that modulating the damping rate of a microwave resonator generates a vacuum squeezed state of arbitrary squeezing strength, thereby constituting a mechanism allowing perfect squeezing. Given the recent experimental realizations in circuit QED of a microwave resonator with a tunable damping rate [Yin et al., Phys. Rev. Lett. 110, 107001 (2013)], superconducting circuits are an ideal playground to implement this technique. By dispersively coupling a qubit to the microwave resonator, it is possible to obtain qubit-state-dependent squeezing.

引用

页数：9

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