Related papers: Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration

Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration

URL: http://arxiv.org/abs/2307.00916v2
Date: Thu, 30 Nov 2023 07:20:00 GMT
Title: Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration
Authors: Florian Feuchtmayr, Robert Berghaus, Selene Sachero, Gregor Bayer, Niklas Lettner, Richard Waltrich, Patrick Maier, Viatcheslav Agafonov and Alexander Kubanek
Abstract summary: Color centers in diamond, among them the negatively-charged germanium vacancy (GeV$-$), are promising candidates for many applications of quantum optics. We demonstrate the transfer of a nanodiamond containing a single ingrown GeV- center with excellent optical properties to an open Fabry-P'erot microcavity.
Score: 35.759786254573896
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Color centers in diamond, among them the negatively-charged germanium vacancy (GeV$^-$), are promising candidates for many applications of quantum optics such as a quantum network. For efficient implementation, the optical transitions need to be coupled to a single optical mode. Here, we demonstrate the transfer of a nanodiamond containing a single ingrown GeV- center with excellent optical properties to an open Fabry-P\'erot microcavity by nanomanipulation utilizing an atomic force microscope. Coupling of the GeV- defect to the cavity mode is achieved, while the optical resonator maintains a high finesse of F = 7,700 and a 48-fold spectral density enhancement is observed. This article demonstrates the integration of a GeV- defect with a Fabry-P\'erot microcavity under ambient conditions with the potential to extend the experiments to cryogenic temperatures towards an efficient spin-photon platform.

Related papers

Single V2 defect in 4H Silicon Carbide Schottky diode at low temperature [1.2760250066401975]
We study the behaviour of single silicon vacancy colour centres in a metal-semiconductor (Au/Ti/4H-SiC) epitaxial wafer device. Our work shows the first demonstration of low temperature integration of a Schottky device with optical microstructures for quantum applications.
arXiv Detail & Related papers (2024-10-11T17:37:18Z)
Purcell enhancement and spin spectroscopy of silicon vacancy centers in silicon carbide using an ultra-small mode-volume plasmonic cavity [0.0]
We report the integration of V$_Si$ centers with a plasmonic nanocavity to enhance the emission. The results highlight the potential of nanophotonic structures for advancing quantum networking technologies.
arXiv Detail & Related papers (2024-07-08T13:51:10Z)
Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
arXiv Detail & Related papers (2024-05-03T23:02:30Z)
Coherent Coupling of a Diamond Tin-Vacancy Center to a Tunable Open Microcavity [0.0]
We present a quantum photonic interface based on a single Tin-Vacancy center in a micrometer-thin diamond membrane coupled to a tunable open microcavity. We observe a transmission dip of 50 % for low incident photon number per Purcell-reduced excited state lifetime, while the dip disappears as the emitter is saturated with higher photon number. This work establishes a versatile and tunable platform for advanced quantum optics experiments and proof-of-principle demonstrations towards quantum networking with solid-state qubits.
arXiv Detail & Related papers (2023-11-14T19:00:02Z)
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)
Photoluminescence imaging of single photon emitters within nanoscale strain profiles in monolayer WSe$_2$ [0.0]
Local deformation of van der Waals materials provides a powerful approach to create chip-compatible single-photon emitters (SPEs) Here we investigate SPEs with single-photon purity up to 98% created in monolayer WSe$indentation. Using photoluminescence imaging in combination with atomic force microscopy, we locate single-photon emitting sites on a deep sub-wavelength spatial scale.
arXiv Detail & Related papers (2023-01-23T15:21:28Z)
Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
arXiv Detail & Related papers (2020-12-21T17:22:25Z)
Resonant Excitation and Purcell Enhancement of Coherent Nitrogen-Vacancy Centers Coupled to a Fabry-P\'{e}rot Micro-Cavity [0.0]
nitrogen-vacancy (NV) center in diamond has been established as a prime building block for quantum networks. Poor optical coherence of near-surface NV centers has so far prevented their resonant optical control, as would be required for entanglement generation. We demonstrate resonant addressing of individual, fiber-cavity-coupled NV centers, and collection of their Purcell-enhanced coherent photon emission.
arXiv Detail & Related papers (2020-09-17T10:48:16Z)
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)
Nitrogen-vacancy defect emission spectra in the vicinity of an adjustable silver mirror [62.997667081978825]
Optical emitters of quantum radiation in the solid state are important building blocks for emerging technologies. We experimentally study the emission spectrum of an ensemble of nitrogen-vacancy defects implanted around 8nm below the planar diamond surface.
arXiv Detail & Related papers (2020-03-31T10:43:26Z)

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