Perfect squeezing by damping modulation in circuit quantum electrodynamics

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.

10 pages, 5 figures

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• Dissipative stabilization of squeezing beyond 3 dB in a microwave mode
• Strong mechanical squeezing in a standard optomechanical system by pump modulation
• Photon-assisted tunneling with non-classical light
• Resonator reset in circuit QED by optimal control for large open quantum systems
• Reservoir-engineered spin squeezing: macroscopic even-odd effects and hybrid-systems implementations
• Quantum optics theory of electronic noise in coherent conductors
• Stabilizing two-qubit entanglement by mimicking a squeezed environment
• Microwave degenerate parametric down-conversion with a single cyclic three-level system in circuit QED
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• Applications of the Fokker-Planck equation in circuit quantum electrodynamics
• Theory of interactions between cavity photons induced by a mesoscopic circuit
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• Quantum Properties of the radiation emitted by a conductor in the Coulomb Blockade Regime
• Enhancement and state tomography of a squeezed vacuum with circuit quantum electrodynamics
• Photon-number resolution with microwave Josephson photomultipliers
• Parity-assisted generation of nonclassical states of light in circuit quantum electrodynamics
• Absorbing state phase transitions beyond directed percolation in dissipative quantum state preparation
• Engineering long-lived entanglement through dissipation in quantum hybrid solid-state platforms
• Beating the 3 dB Limit for Intracavity Squeezing and Its Application to Nondemolition Qubit Readout
• Discrete-time reservoir engineering with entangled bath and stabilizing squeezed states
• Two-photon exchange interaction from Dicke Hamiltonian under parametric modulation