Nitrogen-Vacancy Centers in Epitaxial Laterally Overgrown Diamond: Towards Up-scaling of Color Center-based Quantum Technologies

• URL: http://arxiv.org/abs/2501.11481v1
• Date: Mon, 20 Jan 2025 13:24:23 GMT
• Title: Nitrogen-Vacancy Centers in Epitaxial Laterally Overgrown Diamond: Towards Up-scaling of Color Center-based Quantum Technologies
• Authors: Nimba Oshnik, Sebastian Westrich, Nina Burmeister, Oliver Roman Opaluch, Lahcene Mehmel, Riadh Issaoui, Alexandre Tallaire, Ovidiu Brinza, Jocelyn Achard, Elke Neu,
• Abstract summary: High-quality, single-crystal diamond (SCD) with a large area is desirable for up-scaling quantum technology applications. Heteroepitaxy has become a common tool for growing large SCDs; however, achieving the high crystal quality needed for quantum applications remains a challenge.
• Score: 32.73124984242397
• License:
• Abstract: Providing high-quality, single-crystal diamond (SCD) with a large area is desirable for up-scaling quantum technology applications that rely on color centers in diamond. Growth methods aiming to increase the area of SCD are an active research area. Native color centers offer a sensitive probe for local crystal quality in such novel materials e.g., via their reaction to stress. In this work, we investigate individual native nitrogen-vacancy (NV) centers in SCD layers manufactured via laterally overgrowing hole arrays in a heteroepitaxially grown large-scale substrate. Heteroepitaxy has become a common tool for growing large SCDs; however, achieving the high crystal quality needed for quantum applications remains a challenge. In the overgrown layer, we identify NV centers with spin-decoherence times in the order of hundreds of microseconds, comparable to high-purity homoepitaxial SCD. We quantify the effective crystal strain in different regions of the overgrown layer, indicating a low stress overall and a stress reduction in the diamond layer above the holes.

Related papers

• Optically Coherent Nitrogen-Vacancy Centers in HPHT Treated Diamonds [6.576597801995822]
  nitrogen-vacancy (NV) center in diamond has attracted much attention in the fields of quantum sensing, quantum simulation, and quantum networks. In this work, we demonstrate a non-destructive method to fabricate optically coherent NV centers.
  arXiv  Detail & Related papers  (2024-09-26T00:29:34Z)
• Deterministic Creation of Strained Color Centers in Nanostructures via High-Stress Thin Films [0.5706164516481158]
  In this work we combine high-stress silicon nitride thin films with diamond nanostructures in order to reproducibly create strained silicon-vacancy color centers. Based on modeling, this strain should be sufficient to allow for operation of a majority silicon-vacancy centers within a measured sample at elevated temperatures (1.5K) without any degradation of their spin properties.
  arXiv  Detail & Related papers  (2023-09-13T23:50:34Z)
• Microwave-based quantum control and coherence protection of tin-vacancy spin qubits in a strain-tuned diamond membrane heterostructure [54.501132156894435]
  Tin-vacancy center (SnV) in diamond is a promising spin-photon interface with desirable optical and spin properties at 1.7 K. We introduce a new platform that overcomes these challenges - SnV centers in uniformly strained thin diamond membranes. The presence of crystal strain suppresses temperature dependent dephasing processes, leading to a considerable improvement of the coherence time up to 223 $mu$s at 4 K.
  arXiv  Detail & Related papers  (2023-07-21T21:40:21Z)
• Microscopic study of optically-stable, coherent color centers in diamond generated by high-temperature annealing [6.8606674775322185]
  Single color centers in solid have emerged as promising physical platforms for quantum information science. We propose and demonstrate a distinct high-temperature annealing (HTA) approach for creating high-quality nitrogen vacancy (NV) centers in implantation-free diamonds.
  arXiv  Detail & Related papers  (2022-08-20T14:20:19Z)
• Review on coherent quantum emitters in hexagonal boron nitride [91.3755431537592]
  I discuss the state-of-the-art of defect centers in hexagonal boron nitride with a focus on optically coherent defect centers. The spectral transition linewidth remains unusually narrow even at room temperature. The field is put into a broad perspective with impact on quantum technology such as quantum optics, quantum photonics as well as spin optomechanics.
  arXiv  Detail & Related papers  (2022-01-31T12:49:43Z)
• Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies [48.634695885442504]
  nanoscale-thick uniform diamond membranes are synthesized via "smart-cut" and isotopically (12C) purified overgrowth. Within 110 nm thick membranes, individual germanium-vacancy (GeV-) centers exhibit stable photoluminescence at 5.4 K and average optical transition linewidths as low as 125 MHz. This platform enables the straightforward integration of diamond membranes that host coherent color centers into quantum technologies.
  arXiv  Detail & Related papers  (2021-09-23T17:18:39Z)
• High-precision mapping of diamond crystal strain using quantum interferometry [1.1545092788508224]
  We report diamond strain measurements with a unique set of capabilities, including micron-scale spatial resolution, millimeter-scale field-of-view. We use strain-sensitive spin-state interferometry on ensembles of nitrogen vacancy (NV) color centers in single-crystal CVD bulk diamond.
  arXiv  Detail & Related papers  (2021-07-31T18:32:49Z)
• Enhancement of concentration of XeV and GeV centers in nanocrystalline diamond through He+ irradiation [0.0]
  We report enhancing the concentration of Ge and Xe vacancy centers in nanocrystalline diamond (NCD) by means of He+ irradiation. NCDs were irradiated with He+ ions and characterized through optical spectroscopy measurements.
  arXiv  Detail & Related papers  (2021-03-23T19:07:51Z)
• Laser threshold magnetometry using green light absorption by diamond nitrogen vacancies in an external cavity laser [52.77024349608834]
  Nitrogen vacancy (NV) centers in diamond have attracted considerable recent interest for use in quantum sensing. We show theoretical sensitivity to magnetic field on the pT/sqrt(Hz) level is possible using a diamond with an optimal density of NV centers.
  arXiv  Detail & Related papers  (2021-01-22T18:58:05Z)
• High-Q Nanophotonic Resonators on Diamond Membranes using Templated Atomic Layer Deposition of TiO2 [48.7576911714538]
  Integrating quantum emitters with nanophotonic resonators is essential for efficient spin-photon interfacing and optical networking applications. Here, we develop an integrated photonics platform based on templated atomic layer deposition of TiO2 on diamond membranes. Our fabrication method yields high-performance nanophotonic devices while avoiding etching wavelength-scale features into diamond.
  arXiv  Detail & Related papers  (2020-04-07T16:43:46Z)

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.