Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

All-Optical Control of Pulse Storage Time and Retrieval Phase Using a Diamond Microdisk

Matthew Mitchell, David P. Lake, Paul E. Barclay

Published May 5, 2019• 1 citation
Publisher

Abstract

Enhancement of optomechanical pulse storage time is demonstrated, for the first time, in a multimode diamond microdisk cavity. Optical control of the mechanical damping rate and frequency allows > 5 × enhancement of the pulse storage time, and a maximum controllable pulse phase shift of ~ 2π. © 2019 The Author(s)
DOI
10.23919/cleo.2019.8750396

Related papers

All Optical Control of Pulse Storage Time and Retrieval Phase Using a Diamond Microdisk

Matthew Mitchell, David P. Lake, Paul E. Barclay

Enhancement of optomechanical pulse storage time is demonstrated, for the first time, in a multimode diamond microdisk cavity. Optical control of the mechanical damping rate and frequency allows > 5× enhancement of the pulse storage time, and a maximum controllable pulse phase shift of ~ 2π.

Conference on Lasers and Electro-Optics•Jan 1, 2019•1 citation

Demonstration of an Optomechanically Tunable Optical Buffer in Diamond Microcavities

Matthew Mitchell, David P. Lake, Paul E. Barclay

Enhancement of optomechanical pulse storage time is demonstrated, for the first time, in a multimode single-crystal diamond microdisk cavity. All-optical control of the mechanical damping rate allows > 5 × enhancement of the pulse storage time.

Frontiers in Optics•Jan 1, 2018•0 citations

Novel nonlinear optics in diamond micro- and nano-cavities

Sigurd Flågan, Joe Itoi, Elham Zohari +7 more

Diamond constitutes a promising material platform for a myriad of photonic applications. In this work, we demonstrate several novel nonlinear optical phenomena in fibre-taper coupled diamond micro and nanocavities. Central to these observations are ensembles of nitrogen-vacancy (NV) centres native to the diamond devices. We first show photoinduced modifications of second-harmonic generation (SHG) from a microdisk, and demonstrate, for the first time, that the strength of the SHG strongly depends on the charge state of the NV centres. Illuminating the microdisk with a green laser quenches the SHG signal. Removing the green laser recovers the original SHG signal, allowing for deterministic optical switching of the device’s χ(2). We next show strong photorefractive blue-shifting of the resonance frequency in a diamond photonic crystal cavity. The total frequency shift exceeds the intrinsic linewidth, corresponding to a fractional change in refractive index of ∼ −10−4.

Integrated Optics: Design, Devices, Systems, and Applications•Jun 5, 2025•0 citations

Exceptional points in diamond optomechanics

Waleed El-Sayed, Elham Zohari, Joe Itoi +6 more

Multimode cavity optomechanical systems allow light to couple otherwise non-interacting mechanical resonators, enabling non-Hermitian phenomena such as exceptional points, where eigenfrequencies and eigenvectors of coupled modes coalesce. Accessing an exceptional point and its nearby parameter space is a first step towards chiral mode dynamics and topological state transfer. Diamond optomechanical devices support strong coherent optomechanical coupling required to tune resonances to an exceptional point, as well as strain-coupling to spin-defects for hybrid quantum technologies, but have not yet been used for multimode non-Hermitian physics. Here we tune to an exceptional point in a diamond optomechanical crystal, which uses structural symmetry breaking to produce two high-frequency mechanical resonances coupled to an optical cavity. The exceptional point is reached within a stable operating window below the phonon-lasing threshold, and we observe asymmetric redistribution of optomechanical damping and anti-damping between hybridized modes. These results establish diamond optomechanical crystals as a platform for non-Hermitian optomechanics, opening routes to topological mechanical dynamics in hybrid spin-phonon interfaces.

physics.opticsCross-listedarXiv:2605.27536•May 28, 2026

Dynamic Control of Spontaneous Emission Rate by Optomechanical Cavity QED System

Feng Tian, Hisashi Sumikura, Eiichi Kuramochi +4 more

We demonstrate all-optical control of the spontaneous-emission rate within the emission lifetime in copper-doped-silicon nanobeam optomechanical cavities via mechanical oscillation driven by repetitive laser pulses, representing the first experimental realization of optomechanical cavity QED systems.

•May 5, 2019•0 citations

Processing telecom wavelength light with an optically tunable memory

David P. Lake, Matthew Mitchell, Paul E. Barclay

Information storage and processing devices are essential elements of classical and quantum communication and computing technologies. Optical memories based on optomechanically induced transparency allow storage of optical signals in the motion of mechanical resonators. However, their storage time is limited by intrinsic mechanical dissipation, and deterministic in-situ control and manipulation of the stored signals-i.e. processing-has not been demonstrated. Here, we address both of these limitations using reservoir engineering of the environment coupled to the mechanical resonator. We demonstrate that in-situ optomechanical control of the resonator's mechanical properties can extend the optomechanical memory storage time, as well as deterministically shift the phase of a stored pulse by over 2$\pi$, expanding the information processing toolkit provided by cavity optomechanics.

•Dec 12, 2019•3 citations
Diamond constitutes a promising material platform for a myriad of photonic applications. In this work, we demonstrate several novel nonlinear optical phenomena in fibre-taper coupled diamond micro and nanocavities. Central to these observations are ensembles of nitrogen-vacancy (NV) centres native to the diamond devices. We first show photoinduced modifications of second-harmonic generation (SHG) from a microdisk, and demonstrate, for the first time, that the strength of the SHG strongly depends on the charge state of the NV centres. Illuminating the microdisk with a green laser quenches the SHG signal. Removing the green laser recovers the original SHG signal, allowing for deterministic optical switching of the device’s χ(2). We next show strong photorefractive blue-shifting of the resonance frequency in a diamond photonic crystal cavity. The total frequency shift exceeds the intrinsic linewidth, corresponding to a fractional change in refractive index of ∼ −10−4.
Multimode cavity optomechanical systems allow light to couple otherwise non-interacting mechanical resonators, enabling non-Hermitian phenomena such as exceptional points, where eigenfrequencies and eigenvectors of coupled modes coalesce. Accessing an exceptional point and its nearby parameter space is a first step towards chiral mode dynamics and topological state transfer. Diamond optomechanical devices support strong coherent optomechanical coupling required to tune resonances to an exceptional point, as well as strain-coupling to spin-defects for hybrid quantum technologies, but have not yet been used for multimode non-Hermitian physics. Here we tune to an exceptional point in a diamond optomechanical crystal, which uses structural symmetry breaking to produce two high-frequency mechanical resonances coupled to an optical cavity. The exceptional point is reached within a stable operating window below the phonon-lasing threshold, and we observe asymmetric redistribution of optomechanical damping and anti-damping between hybridized modes. These results establish diamond optomechanical crystals as a platform for non-Hermitian optomechanics, opening routes to topological mechanical dynamics in hybrid spin-phonon interfaces.
Information storage and processing devices are essential elements of classical and quantum communication and computing technologies. Optical memories based on optomechanically induced transparency allow storage of optical signals in the motion of mechanical resonators. However, their storage time is limited by intrinsic mechanical dissipation, and deterministic in-situ control and manipulation of the stored signals-i.e. processing-has not been demonstrated. Here, we address both of these limitations using reservoir engineering of the environment coupled to the mechanical resonator. We demonstrate that in-situ optomechanical control of the resonator's mechanical properties can extend the optomechanical memory storage time, as well as deterministically shift the phase of a stored pulse by over 2π\piπ, expanding the information processing toolkit provided by cavity optomechanics.