Diamond optomechanical crystals for high-frequency strain and comb generation

• URL: http://arxiv.org/abs/2608.27581v1
• Date: Thu, 27 Aug 2026 18:07:50 GMT
• Title: Diamond optomechanical crystals for high-frequency strain and comb generation
• Abstract summary: We demonstrate a diamond optomechanical crystal cavity that supports multiple mechanical resonances with a frequency comb spanning 143 GHz.<n>We show that its mechanical oscillation amplitude reaches 130 pm.<n>This corresponds to a maximum total dynamic strain of $1.1 times 10-3$ that is sufficiently high for future demonstrations of optomechanical control of diamond spin qubits.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum optomechanical technologies benefit from mechanical oscillators that are high-frequency, can be coherently driven, and are capable of coupling to other quantum systems. Diamond supports all of these criteria: its large elastic modulus increases mechanical resonance frequency, its low nonlinear optical absorption increases the allowed intensity of fields used for coherent optomechanics, and it hosts spin qubits that interact with mechanical modes. Here we demonstrate a diamond optomechanical crystal cavity that supports multiple mechanical resonances with $\sim$12 GHz frequency and high $Q_\text{m} \times f_\text{m}$ product that can be coherently coupled to multiple optical modes. By exciting this sideband resolved system into mechanical self-sustained oscillations, we generate a frequency comb spanning 143 GHz. Analysis of the comb spectrum, combined with systematic characterization of the system's optomechanical coupling, allows us to quantitatively show that its mechanical oscillation amplitude reaches 130 pm. This corresponds to a maximum total dynamic strain of $1.1 \times 10^{-3}$ that is sufficiently high for future demonstrations of optomechanical control of diamond spin qubits.

Related papers

• Optical Entanglement Facilitated by Opto-Mechanical Cooling [41.99844472131922]
  We present a theoretical study of low frequency entanglement generation between two optical harmonics emitted from a cavity optomechanical system operating in the resolved-sideband regime.<n>Our findings demonstrate the feasibility of robust entanglement under ambient conditions, opening new avenues for hybrid quantum technologies based on mechanical interfaces and continuous-variable quantum information processing.
  arXiv  Detail & Related papers  (2025-11-21T13:41:58Z)
• Tunable anharmonicity in cavity optomechanics in the unresolved sideband regime [0.0]
  We present a theory that predicts the measurable signatures left by the mechanical anharmonicity.<n>In particular, we obtain analytically and numerically the mechanical displacement spectrum, and explore the imprints of the mechanical anharmonicity on the cavity light field.
  arXiv  Detail & Related papers  (2025-01-15T16:21:21Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Realizing a mechanical dynamical Casimir effect with a low-frequency oscillator [0.0]
  We propose to realize a mechanical dynamical Casimir effect (MDCE) in a hybrid optomechanical system.<n>It is not a quantum simulation of a parametric DCE such as in superconducting circuits.<n>It is found that the mechanical frequency can be about two orders smaller than the cavity mode in yielding a remarkable flux of DCE photons.
  arXiv  Detail & Related papers  (2024-08-05T08:38:44Z)
• Strong coupling at room temperature with a centimeter-scale quartz crystal [0.0]
  We report an optomechanical system with independent control over pumping power and frequency detuning to achieve and characterize the strong-coupling regime of a bulk acoustic-wave resonator. Our results provide valuable insights into the performances of room-temperature macroscopic mechanical systems and their applications in hybrid quantum devices.
  arXiv  Detail & Related papers  (2024-05-28T12:15:05Z)
• Nanomechanical crystalline AlN resonators with high quality factors for quantum optoelectromechanics [38.12258102043167]
  Tensile strain in the material enables the use of dissipation dilution and strain engineering techniques, which increase the mechanical quality factor. We demonstrate nanomechanical resonators that exploit dissipation dilution and strain engineering to reach a $Q_m times f_m$-product approaching $1013$ Hz at room temperature.
  arXiv  Detail & Related papers  (2024-02-19T15:00:51Z)
• Kerr-optomechanical spectroscopy of multimode diamond resonators [0.376411168532706]
  Diamond microdisk cavities play a key role in optomechanical and spin-optomechanical technologies. Accessing other mechanical modes of these structures is desirable for identifying routes towards improving their optomechanical properties. Here we perform broadband optomechanical spectroscopy on diamond microdisks, and observe high quality factor mechanical modes with frequencies up to 10 GHz.
  arXiv  Detail & Related papers  (2023-06-17T15:31:36Z)
• Enhanced optomechanical interaction in the unbalanced interferometer [40.96261204117952]
  Quantum optomechanical systems enable the study of fundamental questions on quantum nature of massive objects. Here we propose a modification of the Michelson-Sagnac interferometer, which allows to boost the optomechanical coupling strength.
  arXiv  Detail & Related papers  (2023-05-11T14:24:34Z)
• Unconditional Wigner-negative mechanical entanglement with linear-and-quadratic optomechanical interactions [62.997667081978825]
  We propose two schemes for generating Wigner-negative entangled states unconditionally in mechanical resonators. We show analytically that both schemes stabilize a Wigner-negative entangled state that combines the entanglement of a two-mode squeezed vacuum with a cubic nonlinearity. We then perform extensive numerical simulations to test the robustness of Wigner-negative entanglement attained by approximate CPE states stabilized in the presence of thermal decoherence.
  arXiv  Detail & Related papers  (2023-02-07T19:00:08Z)
• Direct laser-written optomechanical membranes in fiber Fabry-Perot cavities [41.94295877935867]
  We demonstrate a cavity optomechanical experiment using 3D-laser-written polymer membranes inside fiber Fabry-Perot cavities. We observe optomechanical spring tuning of the mechanical resonator by tens of kHz exceeding its linewidth at cryogenic temperatures.
  arXiv  Detail & Related papers  (2022-12-27T16:02:03Z)
• Phononically shielded photonic-crystal mirror membranes for cavity quantum optomechanics [48.7576911714538]
  We present a highly reflective, sub-wavelength-thick membrane resonator featuring high mechanical quality factor. We construct a Fabry-Perot-type optical cavity, with the membrane forming one terminating mirror. We demonstrate optomechanical sideband cooling to mK-mode temperatures, starting from room temperature.
  arXiv  Detail & Related papers  (2022-12-23T04:53:04Z)
• Mechanical Squeezing in Quadratically-coupled Optomechanical Systems [0.0]
  We demonstrate the generation of a strong mechanical squeezing in a dissipative optomechanical system. Even for a thermal occupancy of 104 phonons, mechanical squeezing beyond 3 dB and a strong optomechanical entanglement is observed.
  arXiv  Detail & Related papers  (2022-10-02T13:13:37Z)
• Continuous-Wave Frequency Upconversion with a Molecular Optomechanical Nanocavity [46.43254474406406]
  We use molecular cavity optomechanics to demonstrate upconversion of sub-microwatt continuous-wave signals at $sim$32THz into the visible domain at ambient conditions. The device consists in a plasmonic nanocavity hosting a small number of molecules. The incoming field resonantly drives a collective molecular vibration, which imprints an optomechanical modulation on a visible pump laser.
  arXiv  Detail & Related papers  (2021-07-07T06:23:14Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.