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- Kolvik, Johan, 1995, et al.
(författare)
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Clamped and sideband-resolved silicon optomechanical crystals
- 2023
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Ingår i: Optica. - 2334-2536. ; 10:7, s. 913-916
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Tidskriftsartikel (refereegranskat)abstract
- Optomechanical crystals (OMCs) are a promising and versatile platform for transduction between mechanical and optical fields. However, the release from the substrate used in conventional suspended OMCs also complicates manufacturing and severely reduces thermal anchoring. This may be improved by attaching the OMCs directly to the substrate. Previous work towards such clamped, i.e., non-suspended, OMCs suffers from weak interaction rates and insufficient lifetimes. Here, we present a class of clamped OMCs realizing—for the first time, to our knowledge—optomechanical interactions in the resolved-sideband regime required for quantum transduction. Our approach leverages high-wavevector mechanical modes outside the continuum. We observe a record zero-point optomechanical coupling rate of g0/(2π) ≈ 0.50 MHz along with a sevenfold improvement in the single-photon cooperativity of clamped OMCs. Our devices operate at frequencies commonly used in superconducting qubits. This opens an avenue using clamped OMCs in both classical and quantum communications, sensing, and computation through scalable mechanical circuitry that couples strongly to light.
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| 2. |
- Thompson, Joshua, 1992, et al.
(författare)
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Criteria for deterministic single-photon emission in two-dimensional atomic crystals
- 2020
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Ingår i: Physical Review Materials. - 2475-9953. ; 4:8
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Tidskriftsartikel (refereegranskat)abstract
- The deterministic production of single photons from two-dimensional materials promises to usher in a new generation of photonic quantum devices. In this work, we outline criteria by which single-photon emission can be realized in two-dimensional materials: spatial isolation, spectral filtering, and low excitation of quantum emitters. We explore how these criteria can be fulfilled in atomically thin transition metal dichalcogenides, where excitonic physics dictates the observed photoemission. In particular, we model the effect of defects and localized strain, in accordance with the most common experimental realizations, on the photon statistics of emitted light. Moreover, we demonstrate that an optical cavity has a negative impact on the photon statistics, suppressing the single-photon character of the emission by diminishing the effect of spectral filtering on the emitted light. Our work provides a theoretical framework revealing criteria necessary to facilitate single-photon emission in two-dimensional materials and thus can guide future experimental studies in this field.
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