Perfect squeezing by damping modulation in circuit quantum electrodynamics

2013/07/31 by Nicolas Didier, Farzad Qassemi, Alexandre Blais · 2 citations
Computer Science · Physics and Astronomy · #Mechanical and Optical Resonators #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physreva.89.013820

published as Phys. Rev. A 89, 013820 (2014) · 10 pages, 5 figures

openalex publication_date 2014/01/17 · arxiv created 2014/01/28 · arxiv updated 2015/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

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.

Citations

• Back-action evasion and squeezing of a mechanical resonator using a cavity detector
• Quantum-enhanced measurements: beating the standard quantum limit
• Fast reset and suppressing spontaneous emission of a superconducting qubit
• Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation

Cited by

• Antibunching and unconventional photon blockade with Gaussian squeezed states
• Enhanced nonlinear interactions in quantum optomechanics via mechanical amplification

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