Heisenberg-Limited Spin Squeezing via Bosonic Parametric Driving

Spin-spin interactions generated by a detuned cavity are a standard mechanism for generating highly entangled spin squeezed states. We show here how introducing a weak detuned parametric (two-photon) drive on the cavity provides a powerful means for controlling the form of the induced interactions....

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Bibliographic Details
Published in:Physical review letters 2020-11, Vol.125 (20), p.203601-203601, Article 203601
Main Authors: Groszkowski, Peter, Lau, Hoi-Kwan, Leroux, C., Govia, L. C. G., Clerk, A. A.
Format: Article
Language:English
Subjects:
Compressing
Squeezed states (quantum theory)
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Summary:Spin-spin interactions generated by a detuned cavity are a standard mechanism for generating highly entangled spin squeezed states. We show here how introducing a weak detuned parametric (two-photon) drive on the cavity provides a powerful means for controlling the form of the induced interactions. Without a drive, the induced interactions cannot generate Heisenberg-limited spin squeezing, but a weak optimized drive gives rise to an ideal two-axis twist interaction and Heisenberg-limited squeezing. Parametric driving is also advantageous in regimes limited by dissipation, and enables an alternate adiabatic scheme which can prepare optimally squeezed, Dicke-like states. Our scheme is compatible with a number of platforms, including solid-state systems where spin ensembles are coupled to superconducting quantum circuits or mechanical modes.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.125.203601