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arXiv · 2308.05206

A Long-lived and Efficient Optomechanical Memory for Light

Mads Bjerregaard Kristensen·Nenad Kralj·Eric Langman·Albert Schliesser
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Abstract

We demonstrate a memory for light based on optomechanically induced transparency. We achieve a long storage time by leveraging the ultra-low dissipation of a soft-clamped mechanical membrane resonator, which oscillates at MHz frequencies. At room temperature, we demonstrate a lifetime $T_1 \approx 23\,\mathrm{ms}$ and a retrieval efficiency $\eta \approx 40\%$ for classical coherent pulses. We anticipate storage of quantum light to be possible at moderate cryogenic conditions ($T\approx 10\,\mathrm{K}$). Such systems could find applications in emerging quantum networks, where they can serve as long-lived optical quantum memories by storing optical information in a phononic mode.

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Mads Bjerregaard Kristensen, Nenad Kralj, Eric Langman, Albert Schliesser. 2023-08-09. A Long-lived and Efficient Optomechanical Memory for Light. https://arxiv.org/abs/2308.05206

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