搜索结果: 1-15 共查到“物理学 diamond”相关记录28条 . 查询时间(0.109 秒)
Gyroscopes based on nitrogen-vacancy centers in diamond
Gyroscopes nitrogen-vacancy centers diamond Atomic Physics
2012/5/17
We propose solid-state gyroscopes based on ensembles of negatively charged nitrogen-vacancy centers in diamond. In one scheme, rotation of the nitrogen-vacancy symmetry axis will induce Berry's phase ...
Diamond particles as nanoantennas for nitrogen-vacancy color centers
Diamond particles nanoantennas nitrogen-vacancy color centers Quantum Physics
2011/8/2
Abstract: The photoluminescence of nitrogen-vacancy (NV) centers in diamond nanoparticles exhibits specific properties as compared to NV centers in bulk diamond. For instance large fluctuations of lif...
Coupling of a Single Diamond Nanocrystal to a Whispering-Gallery Microcavity: Photon Transportation Benefitting from Rayleigh Scattering
Whispering-Gallery Photon Transportation Benefitting Rayleigh Scattering
2011/9/13
We study the Rayleigh scattering induced by a diamond nanocrystal in a whispering-gallery-microcavity–waveguide coupling system, and find that it plays a significant role in the photon transportation....
Ab-initio calculations for the beta-tin diamond transition in Silicon: comparing theories with experiments
Ab-initio calculations for the beta-tin diamond transition Silicon:
2010/11/19
We investigate the pressure-induced metal-insulator transition from diamond to β-tin in bulk Silicon,using quantum Monte Carlo (QMC) and density functional theory (DFT) approaches. We show
that it is...
Optically induced spin polarisation of the NV- centre in diamond: role of electron-vibration interaction
Optically induced spin polarisation NV- centre in diamond: role electron-vibration interaction
2010/11/22
The novel aspect of the centre (NV−) in diamond is the high degree of spin polarisation achieved through optical illumination. In this paper it is shown that the spin polarisation occurs as a co...
Chemical control of the charge state of nitrogen-vacancy centers in diamond
Chemical control of the charge state nitrogen-vacancy centers in diamond
2010/11/25
We investigate the e ect of surface termination on the charge state of nitrogen vacancy centers,which have been ion-implanted few nanometers below the surface of diamond. We nd that,when changing the...
Properties of nitrogen-vacancy centers in diamond: group theoretic approach
Properties nitrogen-vacancy centers diamond group theoretic approach
2010/10/29
We present a procedure that makes use of group theory to analyze and predict the main properties of the negatively charged nitrogen-vacancy (NV) center in diamond. We focus on the relatively low tempe...
Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamond
Spin dynamics the optical cycle single nitrogen-vacancy centres diamond
2010/10/29
We investigate spin-dependent decay and intersystem crossing in the optical cycle of single negatively-charged nitrogen-vacancy (NV) centres in diamond. We use spin control and pulsed optical excitati...
Controlling single diamond NV color center photoluminescence spectrum with a Fabry-Perot microcavity
Controlling single diamond NV color center photoluminescence spectrum Fabry-Perot microcavity
2010/11/9
We present both theoretical and experimental results on fluorescence of single defect centers in diamond nanocrystals embedded in a planar dielectric microcavity. From a theoretical point of view, we ...
Broadband magnetometry by infrared-absorption detection of diamond NV centers
Broadband magnetometry infrared-absorption detection
2010/10/27
We demonstrate magnetometry by detection of the spin state of high-density nitrogenvacancy
(NV) ensembles in diamond using optical absorption at 1042 nm. With this technique,
measurement contrast an...
Realtime magnetic field sensing and imaging using a single spin in diamond
Realtime magnetic field sensing imaging diamond
2010/10/27
The Zeeman splitting of a localized single spin can be used to construct a magnetometer allowing high precision measurements of magnetic fields with almost atomic spatial resolution.
Experimental implementation of optimal phase-covariant quantum cloning machine with a single electron spin in diamond at room temperature
Experimental implementation optimal phase-covariant quantum cloning machine single electron spin diamond at room temperature
2010/10/19
Here we report an experimental realization of optimal phase-covariant quantum cloning machine
with a single electron spin in solid state system at room temperature. The involved three states of two l...
Optical properties of the nitrogen-vacancy singlet levels in diamond
Optical properties nitrogen-vacancy singlet levels diamond
2010/10/18
We report measurements of the optical properties of the 1042 nm transition of negativelycharged
Nitrogen-Vacancy (NV) centers in type 1b diamond. The results indicate that the upper level of this tra...
Integrated Diamond Optics for Single Photon Detection
Integrated Diamond Optics Single Photon Detection
2010/10/18
Optical detection of single defect centers in the solid state is a key element of novel quantum
technologies. This includes the generation of single photons and quantum information processing.Unfortu...
Coherence properties of a single dipole emitter in diamond
Coherence properties single dipole emitter diamond
2010/10/19
On-demand, high repetition rate sources of indistinguishable, polarised single photons are the key component for future photonic quantum technologies [1].Colour centres in diamond offer a promising so...