2020/03/06 by Peter Groszkowski, Hoi-Kwan Lau, C. Leroux +5 · 46 citations
Computer Science · Physics and Astronomy · #Adiabatic process #Dissipation #Heisenberg limit #Mechanical and Optical Resonators #Parametric statistics #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum entanglement #Quantum mechanics #Quantum network #Quantum optics #Spin (aerodynamics) #quant-ph
paper · pdf · doi:10.1103/physrevlett.125.203601
published in Physical Review Letters 125(20), 203601 (American Physical Society) · 5 pages, 4 figures (+ supp. material)
arxiv created 2020/03/06 · openalex publication_date 2020/11/12 · arxiv updated 2020/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.