High-Q Optical Nanocavities in Bulk Single-crystal Diamond

Burek, Michael J.; Chu, Yiwen; Liddy, Madelaine S. Z.; Patel, Parth; Rochman, Jake; Lukin, Mikhail D.; Lončar, Marko

doi:10.1364/cleo_si.2014.sm4m.3

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…This should be compared with the lifetime of a photon in the cavity τ c = Q/ ε k . The quality factor Q is usually not exceeding values above Q ∼ 10 6 [14], for which τ c ≈ 10 −4 sec. At extra cost, it is possible to reach Q ∼ 10 9 [15] but this is still far from what is needed to reach the adiabatic regime without photon loss.…”

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confidence: 99%

Cooperative Light Emission in the Presence of Strong Inhomogeneous Broadening

et al. 2019

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We study photon emission by an ensemble of two-level systems, with strong inhomogeneous broadening and coupled to a cavity mode whose frequency has linear time-dependence. The analysis shows that, regardless the distribution of energy level splittings, a sharp phase transition occurs between the weak and strong cooperative emission phases near a critical photonic frequency sweeping rate. The associated scaling exponent is determined. We suggest that this phase transition can be observed in an ensemble of negatively charged NV − centers in diamond interacting with a microwave half-wavelength cavity mode even in the regime of weak coupling and at strong disorder of two-level splittings.

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Cooperative Light Emission in the Presence of Strong Inhomogeneous Broadening

et al. 2019

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Diamond — A quantum engineer's best friend

Lončar

2016

2016 IEEE International Electron Devices Meeting (IEDM)

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Photonic crystal nanobeam cavities with lateral fins

Liu

Chen

et al. 2021

Nanophotonics

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We present the design, fabrication, and characterization of suspended arrays of small volume, high quality factor (Q) silicon nitride photonic crystal nanobeam (PCNB) cavities with lateral nanorod fin structures. By controlling the alignment position of the fins with respect to the air holes, the resonance wavelength and Q-factor of the PCNB cavities can be tuned to realize the desired performance. Measured tunable range of 2 × 104 and 10 nm is achieved for Q-factor and resonance wavelength, respectively, with the highest Q-factor measured at 2.5 × 104. Incorporating such nanorod fins into the nanobeam cavity is demonstrated to provide improved mechanical support, thermal transport, and channels of lateral carrier injection for the suspended PCNB. The proposed PCNB cavities with lateral fins are advantageous for energy efficient, ultra-compact lasers, modulators, filters, and sensors.

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High-Q Optical Nanocavities in Bulk Single-crystal Diamond

Cited by 3 publications

References 33 publications

Cooperative Light Emission in the Presence of Strong Inhomogeneous Broadening

Cooperative Light Emission in the Presence of Strong Inhomogeneous Broadening

Diamond — A quantum engineer's best friend

Photonic crystal nanobeam cavities with lateral fins

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