研究目的
To propose a protocol for rapid mechanical squeezing using pulsed optomechanics, which is coherent and executes in a time much shorter than a mechanical period, and to analyze its applications in impulsive force sensing and preservation of Schr?dinger cat states.
研究成果
The proposed protocol for rapid mechanical squeezing using pulsed optomechanics is both fast and coherent, capable of squeezing arbitrary mechanical inputs, including non-Gaussian states, with reasonable fidelity. It outperforms classical protocols and is suitable for use with solid-state oscillators of fixed frequency. The scheme has potential applications in quantum information technologies, particularly in improving the storage of phononic Schr?dinger cat states.
研究不足
The scheme requires the optomechanical interaction with a single photon to be weak (g0 << ωM), the optical linewidth to be sufficient to reach the deep unresolved sideband regime (ωM << κ), and the optomechanical coupling to target a single mechanical mode. Additionally, the performance is limited by optical squeezing and initial mechanical noise, especially in the presence of decoherence.
1：Experimental Design and Method Selection:
The protocol is based on a sequence of four pulsed optomechanical interactions designed to generate a quantum nondemolition (QND) interaction. The scheme leverages the optomechanical interaction to manipulate mechanical oscillators in quantum states.
2：Sample Selection and Data Sources:
The study focuses on macroscopic mechanical oscillators and optical modes, with the mechanical oscillator described by its dimensionless position and momentum operators.
3：List of Experimental Equipment and Materials:
The setup involves optomechanical systems composed of photonic and phononic resonators, where motion of the mechanical element modulates the resonance frequency of the optical cavity.
4：Experimental Procedures and Operational Workflow:
The protocol involves a series of pulsed optomechanical interactions that are executed in a time much shorter than a mechanical period, aiming to achieve coherent mechanical squeezing.
5：Data Analysis Methods:
The performance of the squeezer is quantified by calculating the fidelity of its output states, comparing the actual output state to the desired output.
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