Stabilizing two-qubit entanglement by mimicking a squeezed environment

Abstract

It is well known that qubits immersed in a squeezed vacuum environment exhibit many exotic phenomena, including dissipative entanglement stabilization. Here, we show that these effects only require interference between excitation and decay processes, and can be faithfully mimicked without non-classical light using simple classical temporal modulation. We present schemes that harnesses this idea to stabilize entanglement between two remote qubits coupled via a transmission line or waveguide, where either the qubit-waveguide coupling is modulated, or the qubits are directly driven. We analyze the resilience of these approaches against various imperfections, and also characterize the trade-off between the speed and quality of entanglement stabilization. Our protocols are compatible with state of the art cavity QED systems.

16 pages, 6 figures, equivalent to the published version

References in corpus (9)

• Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
• Two-mode squeezed states in cavity optomechanics via engineering of a single reservoir
• Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State
• Dynamics of simultaneously measured non-commuting observables
• Universal stabilization of a parametrically coupled qubit
• Steady-state entanglement of spatially separated qubits via quantum bath engineering
• Remote entanglement via adiabatic passage using a tunably-dissipative quantum communication system
• Dispersive Qubit Measurement by Interferometry with Parametric Amplifiers
• Stroboscopic qubit measurement with squeezed illumination

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• Tunable directional photon scattering from a pair of superconducting qubits
• Squeezed superradiance enables robust entanglement-enhanced metrology even with highly imperfect readout
• Autonomous Distribution of Programmable Multiqubit Entanglement in a Dual-Rail Quantum Network
• Stabilizing two-qubit entanglement with dynamically decoupled active feedback
• Accelerating Dissipative State Preparation with Adaptive Open Quantum Dynamics
• Loss resilience of driven-dissipative remote entanglement in chiral waveguide quantum electrodynamics
• Universal Time-Entanglement Trade-off in Open Quantum Systems
• Engineering a multi-level bath for transmons with three-wave mixing and parametric drives
• Autonomous stabilization of remote entanglement in a cascaded quantum network
• Engineering squeezed thermal reservoirs via passive linear coupling