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We present a comprehensive study of the temperature and magnetic-field dependent photoluminescence (PL) of individual NV centers in diamond, spanning the temperature-range from cryogenic to ambient conditions. We directly observe the…

The nitrogen-vacancy (NV) center in diamond is well known in quantum metrology and quantum information for its favorable spin and optical properties, which span a wide temperature range from near zero to over 600 K. Despite its prominence,…

Mesoscale and Nanoscale Physics · Physics 2023-09-01 Stefan Ernst , Patrick J. Scheidegger , Simon Diesch , Christian L. Degen

The emission intensity of diamond samples containing nitrogen-vacancy centres are measured as a function of magnetic field along a <111> direction for various temperatures. At low temperatures the responses are sample and stress dependent…

Materials Science · Physics 2009-06-04 L J Rogers , R L McMurtrie , S Armstrong , M J Sellars , N B Manson

Group-IV color centers in diamond have garnered great interest for their potential as optically active solid-state spin qubits. Future utilization of such emitters requires the development of precise site-controlled emitter generation…

Mesoscale and Nanoscale Physics · Physics 2020-02-21 Alison E. Rugar , Haiyu Lu , Constantin Dory , Shuo Sun , Patrick J. McQuade , Zhi-Xun Shen , Nicholas A. Melosh , Jelena Vučković

We report on the coupling of a single Nitrogen-vacancy (NV) center in a nanodiamond to a fiber-based microcavity at room temperature. Investigating the very same NV center inside the cavity and in free-space allows to systematically explore…

Quantum Physics · Physics 2013-06-14 Roland Albrecht , Alexander Bommer , Christian Deutsch , Jakob Reichel , Christoph Becher

The negatively charged nitrogen-vacancy (NV-) center in diamond has realized new frontiers in quantum technology. Here, the center's optical and spin resonances are observed under hydrostatic pressures up to 60 GPa. Our observations…

Diamond samples of defects with negative charged nitrogen-vacancy (NV) centers are promising solid state spin sensors suitable for quantum information processing, high sensitive measurements of magnetic, electric and thermal fields in…

Mesoscale and Nanoscale Physics · Physics 2022-03-16 Zheng Wang , Jintao Zhang , Xiaojuan Feng , Li Xing

We report on the observation of coupling a single nitrogen vacancy (NV) center in a nanodiamond crystal to a propagating plasmonic mode of silver nanowires. The nanocrystal is placed either near to the apex of a single silver nanowire or in…

Quantum Physics · Physics 2013-06-19 Shailesh Kumar , Alexander Huck , Yuntian Chen , Ulrik L. Andersen

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…

Nitrogen-vacancy (NV) centres in diamond are a key platform for quantum sensing and quantum information, combining long coherence times with controllable spin-spin interactions. Most of current quantum algorithms rely on optical access,…

We demonstrate the fabrication of photonic crystal nanobeam cavities with rectangular cross section into bulk diamond. In simulation, these cavities have an unloaded quality factor (Q) of over 1 million. Measured cavity resonances show…

Applied Physics · Physics 2017-12-01 Sara Mouradian , Noel H. Wan , Tim Schröder , Dirk Englund

Single-photon sources are a fundamental element for developing quantum technologies, and sources based on colour centres in diamonds are among the most promising candidates. The well-known NV centres are characterized by several…

The optical coupling of guided modes in a GaP waveguide to nitrogen-vacancy (NV) centers in diamond is demonstrated. The electric field penetration into diamond and the loss of the guided mode are measured. The results indicate that the…

The nitrogen-vacancy (NV) center in diamond is of high importance in quantum information processing applications which relies on the efficient optical polarization of its electron spin. However, the full optical spinpolarization process, in…

Quantum Physics · Physics 2018-09-12 Gergő Thiering , Adam Gali

We present ab-initio calculations of photoionization thresholds and cross sections of the negatively charged nitrogen-vacancy (NV) center in diamond from the ground $^{3}\!A_2$ and the excited $^{3}\!E$ states. We show that after the…

The controlled creation of color centers in phosphorus-doped (n-type) diamond can facilitate the electronics integration of quantum photonics devices, such as single-photon sources operating upon electrical injection. Silicon vacancy (SiV)…

The nitrogen-vacancy (NV) color center in diamond has demonstrated great promise in a wide range of quantum sensing. Recently, there have been a series of proposals and experiments using NV centers to detect spin noise of quantum materials…

Mesoscale and Nanoscale Physics · Physics 2023-04-14 Jacob Henshaw , Pauli Kehayias , Luca Basso , Michael Jaris , Rong Cong , Michael Titze , Tzu-Ming Lu , Michael P. Lilly , Andrew M. Mounce

Silicon-vacancy (SiV) center in diamond is a photoluminescence (PL) center with a characteristic zero-phonon line energy at 1.681 eV that acts as a solid-state single photon source and, potentially, as a quantum bit. The majority of the…

Quantum Physics · Physics 2021-08-02 Elisa Londero , Gergő Thiering , Lukas Razinkovas , Adam Gali , Audrius Alkauskas

Efficient generation of single photons on demand at a high repetition rate is a key to the practical realization of quantum-communication networks and optical quantum computations. Color centers in diamond are considered to be the most…

Applied Physics · Physics 2019-08-14 Igor A. Khramtsov , Dmitry Yu. Fedyanin

Colour centres in diamond have emerged as versatile tools for solid-state quantum technologies ranging from quantum information to metrology, where the nitrogen-vacancy centre is the most studied to-date. Recently, this toolbox has expanded…