Modular interface for efficient optical readout of diamond quantum memory at cryogenic temperatures via single-mode optical fibers

• URL: http://arxiv.org/abs/2510.07032v2
• Date: Tue, 14 Oct 2025 05:06:18 GMT
• Title: Modular interface for efficient optical readout of diamond quantum memory at cryogenic temperatures via single-mode optical fibers
• Authors: Akira Kamimaki, Yuhei Sekiguchi, Daisuke Ito, Taichi Fujiwara, Toshiharu Makino, Hiromitsu Kato, Hideo Kosaka,
• Abstract summary: We present a modular interface for color centers in diamond that is structurally isolated from device-and temperature-related variation.<n>We achieve highly efficient photon collection through single-mode optical fibers, including zero-phonon line spectroscopy, at both room and cryogenic temperatures.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Efficient quantum devices across various physical systems have been rapidly developed for entanglement-based quantum repeaters and spin-photon conversion; however, far less attention has been paid to standardizing platforms through quantum memory optical interfaces. We present a modular interface for color centers in diamond that is structurally isolated from device-and temperature-related variation. Despite a more than 100-fold reduction in confocal volume, we achieve highly efficient photon collection through single-mode optical fibers, including zero-phonon line spectroscopy, at both room and cryogenic temperatures. These results establish a standardized minimal NV-center-based platform and pave the way for construction of scalable quantum infrastructure.

Related papers

• Hybrid and scalable photonic circuit cavity quantum electrodynamics [16.881676658514966]
  We propose and demonstrate a hybrid solid-state cQED platform integrated on a chip.<n>Our device integrates semiconducting quantum dots (QDs) with a thin-film lithium niobate microring resonator.<n>We realize a spectrally tunable hybrid photonic circuit cQED device, sustaining near-constant Purcell factors of 1.89 over a 0.30 nm spectral range.
  arXiv  Detail & Related papers  (2025-04-07T01:45:28Z)
• Scalable construction of hybrid quantum photonic cavities [0.0]
  We introduce a concept that generates a finely tunable PhC cavity at a select wavelength between two heterogeneous optical materials. The cavity is formed by stamping a hard-to-process material with simple waveguide geometries on top of an easy-to-process material. We simulate our concept for the particularly challenging design problem of multiplexed quantum repeaters based on arrays of cavity-coupled diamond color centers.
  arXiv  Detail & Related papers  (2024-10-04T18:36:39Z)
• All-optical modulation with single-photons using electron avalanche [66.27103948750306]
  We demonstrate all-optical modulation enabled by electron avalanche process in silicon.<n>Our approach opens the possibility of gigahertz-speed, and potentially even faster, optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Shaping Single Photons through Multimode Optical Fibers using Mechanical Perturbations [55.41644538483948]
  We show an all-fiber approach for controlling the shape of single photons and the spatial correlations between entangled photon pairs. We optimize these perturbations to localize the spatial distribution of a single photon or the spatial correlations of photon pairs in a single spot.
  arXiv  Detail & Related papers  (2023-06-04T07:33:39Z)
• Heterogeneous integration of solid state quantum systems with a foundry photonics platform [0.14680035572775535]
  Diamond colour centres are promising optically-addressable solid state spins that can be matter-qubits. We demonstrate heterogeneous integration of NV centres in nanodiamond with low-fluorescence silicon nitride photonics.
  arXiv  Detail & Related papers  (2023-04-20T11:40:42Z)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• On-chip single-photon subtraction by individual silicon vacancy centers in a laser-written diamond waveguide [48.7576911714538]
  Laser-written diamond photonics offers three-dimensional fabrication capabilities and large mode-field diameters matched to fiber optic technology. To realize large cooperativities, we combine excitation of single shallow-implanted silicon vacancy centers via large numerical aperture optics. We demonstrate single-emitter extinction measurements with a cooperativity of 0.153 and a beta factor of 13% yielding 15.3% as lower bound for the quantum efficiency of a single emitter.
  arXiv  Detail & Related papers  (2021-11-02T16:01:15Z)
• Narrow optical transitions in erbium-implanted silicon waveguides [0.0]
  We show that erbium dopants can be reproducibly integrated at well-defined lattice sites by implantation into pure silicon. We achieve a narrow inhomogeneous broadening, less than 1 GHz, strong optical transitions, and an outstanding optical coherence even at temperatures of 8 K.
  arXiv  Detail & Related papers  (2021-08-11T09:44:12Z)
• Inverse-designed photon extractors for optically addressable defect qubits [48.7576911714538]
  Inverse-design optimization of photonic devices enables unprecedented flexibility in tailoring critical parameters of a spin-photon interface. Inverse-designed devices will enable realization of scalable arrays of single-photon emitters, rapid characterization of new quantum emitters, sensing and efficient heralded entanglement schemes.
  arXiv  Detail & Related papers  (2020-07-24T04:30:14Z)
• 3D printed micro-optics for quantum technology: Optimized coupling of single quantum dot emission into a single mode fiber [0.0]
  Future quantum technology relies crucially on building quantum networks with high fidelity. To achieve this goal, it is of utmost importance to connect single quantum systems in a way such that their emitted single-photons overlap with the highest possible degree of coherence. Here we present an advanced manufacturing approach to accomplish this task: we combine 3D printed complex micro-optics such as hemispherical and Weierstrass solid immersion lenses.
  arXiv  Detail & Related papers  (2020-07-13T13:29:55Z)
• Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN [52.915502553459724]
  In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
  arXiv  Detail & Related papers  (2020-06-23T14:20:46Z)

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.