Stabilizing two-qubit entanglement by mimicking a squeezed environment

Govia, L. C. G.; Lingenfelter, A.; Clerk, A. A.

doi:10.1103/PhysRevResearch.4.023010

Title: Stabilizing two-qubit entanglement by mimicking a squeezed environment

Journal Article · Tue Apr 05 00:00:00 EDT 2022 · Physical Review Research

DOI:https://doi.org/10.1103/PhysRevResearch.4.023010· OSTI ID:1861168

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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 nonclassical light using a simple classical temporal modulation. We present schemes that harness 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.

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Research Organization:: University of Massachusetts, Lowell, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation (NSF)

Grant/Contract Number:: SC0019461; 2016136

OSTI ID:: 1861168

Alternate ID(s):: OSTI ID: 1993419

Journal Information:: Physical Review Research, Journal Name: Physical Review Research Vol. 4 Journal Issue: 2; ISSN 2643-1564

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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