Non-classical correlations between photons and phonons of center-of-mass motion of a mechanical oscillator
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866915165115514880 |
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| author | Galinskiy, Ivan Enzian, Georg Parniak, Michał Polzik, Eugene |
| author_facet | Galinskiy, Ivan Enzian, Georg Parniak, Michał Polzik, Eugene |
| contents | We demonstrate non-classical correlations between phonons and photons created using opto-mechanical spontaneous parametric down-conversion in a system based on a soft-clamped ultracoherent membrane oscillator inside of a Fabry-Pérot optical resonator. Non-Gaussian quantum features are demonstrated for the center-of-mass motion of a sub-millimeter nanogram-scale mechanical oscillator. We show that phonons stored in the mechanical oscillator, when subsequently read out, display strong signs of quantum coherence, which we demonstrate by single-photon counting enabled by our state-of-the-art optical filtering system. We observe a violation of the classical two-time Cauchy-Schwarz inequality between a heralding write photon and a stored phonon with a confidence of $>92\%$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_05641 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Non-classical correlations between photons and phonons of center-of-mass motion of a mechanical oscillator Galinskiy, Ivan Enzian, Georg Parniak, Michał Polzik, Eugene Quantum Physics Mesoscale and Nanoscale Physics Optics We demonstrate non-classical correlations between phonons and photons created using opto-mechanical spontaneous parametric down-conversion in a system based on a soft-clamped ultracoherent membrane oscillator inside of a Fabry-Pérot optical resonator. Non-Gaussian quantum features are demonstrated for the center-of-mass motion of a sub-millimeter nanogram-scale mechanical oscillator. We show that phonons stored in the mechanical oscillator, when subsequently read out, display strong signs of quantum coherence, which we demonstrate by single-photon counting enabled by our state-of-the-art optical filtering system. We observe a violation of the classical two-time Cauchy-Schwarz inequality between a heralding write photon and a stored phonon with a confidence of $>92\%$. |
| title | Non-classical correlations between photons and phonons of center-of-mass motion of a mechanical oscillator |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2312.05641 |