Squeezed Phonon Lasing via Floquet-Controlled Solid-State Defects

• URL: http://arxiv.org/abs/2606.05083v1
• Date: Wed, 03 Jun 2026 16:40:13 GMT
• Title: Squeezed Phonon Lasing via Floquet-Controlled Solid-State Defects
• Abstract summary: Floquet engineering can realize phase-locked lasing while enabling controlled quadrature squeezing.<n>Our results offer new insights into the generation of squeezed phonon lasers in solid-state platforms.
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• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose a general Floquet-engineered scheme for phonon lasing that enables a continuous transition from conventional lasing to phase-locked squeezed phonon lasing. Focusing on a solid-state platform based on color centers embedded in a circular hexagonal boron nitride (hBN) membrane, we demonstrate that a mechanical oscillator coupled to principal and ancilla spins, and controlled via effective Floquet driving simultaneously exhibits squeezed-state amplification and cooling dynamics, leading to the emergence of a stable squeezed phonon laser. We analyse the steady-state properties of the system, including the lasing threshold, mechanical occupation, emission spectrum and second-order correlations. Furthermore, we show that Floquet engineering can realize phase-locked lasing while enabling controlled quadrature squeezing, thereby providing a simple yet effective route toward squeezed lasing in quantum mechanical systems. Our results offer new insights into the generation of squeezed phonon lasers in solid-state platforms, with potential applications in quantum metrology.

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