Probing the Evolution of Electron Spin Wavefunction of NV Center in diamond via Pressure Tuning

Abstract

Understanding the profile of a qubit's wavefunction is key to its quantum applications. Unlike conducting systems, where a scanning tunneling microscope can be used to probe the electron distribution, there is no direct method for solid-state-defect based qubits in wide-bandgap semiconductors. In this work, we use pressure as a tuning method and a nuclear spin as an atomic scale probe to monitor the hyperfine structure of negatively charged nitrogen vacancy (NV) centers in diamonds under pressure. We present a detailed study on the nearest-neighbor ${}^{13}C$ hyperfine splitting in the optically detected magnetic resonance (ODMR) spectrum of NV centers at different pressures. By examining the ${}^{13}C$ hyperfine interaction upon pressurizing, we show that the NV hyperfine parameters have prominent changes, resulting in an increase in the NV electron spin density and rehybridization from $s{p}^3$ to $s{p}^2$ bonds. The $ab$ $initio$ calculations of strain dependence of the NV center's hyperfine levels are done independently. The theoretical results qualitatively agree well with experimental data without introducing any fitting parameters. Furthermore, this method can be adopted to probe the evolution of wavefunction in other defect systems. This potential capability could play an important role in developing magnetometry and quantum information processing using the defect centers.

References in corpus (35)

• The nitrogen-vacancy colour centre in diamond
• Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
• Nanometer scale quantum thermometry in a living cell
• Sensing electric fields using single diamond spins
• High precision nano scale temperature sensing using single defects in diamond
• Electronic properties and metrology of the diamond NV- center under pressure
• Properties of nitrogen-vacancy centers in diamond: group theoretic approach
• A 10-qubit solid-state spin register with quantum memory up to one minute
• Theory of the ground state spin of the NV- center in diamond: I. Fine structure, hyperfine structure, and interactions with electric, magnetic and strain fields
• Theory of the ground state spin of the NV- center in diamond: II. Spin solutions, time-evolution, relaxation and inhomogeneous dephasing
• Ab initio supercell calculations on nitrogen-vacancy center in diamond: its electronic structure and hyperfine tensors
• The negatively charged nitrogen-vacancy centre in diamond: the electronic solution
• Imaging stress and magnetism at high pressures using a nanoscale quantum sensor
• Coherence of single spins coupled to a nuclear spin bath of varying density
• Quantitative nanoscale vortex-imaging using a cryogenic quantum magnetometer
• Electrically and mechanically tunable electron spins in silicon carbide color centers
• The temperature shifts of the resonances of the NV- center in diamond
• Magnetic measurements on micron-size samples under high pressure using designed NV centers
• Nanomechanical sensing using spins in diamond
• High fidelity transfer and storage of photon states in a single nuclear spin
• Spin-strain interaction in nitrogen-vacancy centers in diamond
• Quantum sensing of local magnetic field texture in strongly correlated electron systems under extreme conditions
• Microscopic imaging of elastic deformation in diamond via in-situ stress tensor sensors
• Widefield imaging of superconductor vortices with electron spins in diamond
• Sidebands in Optically Detected Magnetic Resonance Signals of Nitrogen Vacancy Centers in Diamond
• Measurements of the lower critical field of superconductors using NV centers in diamond optical magnetometry
• Spatially - resolved study of the Meissner effect in superconductors using NV-centers-in-diamond optical magnetometry
• Optically detected magnetic resonance of nitrogen vacancies in a diamond anvil cell using designer diamond anvils
• Probing local pressure environment in anvil cells with nitrogen vacancy (NV-) centers in diamond
• \emph{Ab initio} spin-strain coupling parameters of divacancy qubits in silicon carbide
• Robust optical readout and characterization of nuclear spin transitions in nitrogen-vacancy ensembles in diamond
• Identification and control of electron-nuclear spin defects in diamond
• Temperature drift rate for nuclear terms of NV center ground state Hamiltonian
• Temperature dependence of the ${}^{13}$C hyperfine structure of the negatively-charged nitrogen-vacancy center in diamond
• Fragile pressure-induced magnetism in FeSe superconductors with a thickness reduction

Cited by in corpus (2)

• Spectroscopy Study on NV Sensors in Diamond-based High-pressure Devices
• Quantifying the nonadiabaticity strength constant in recently discovered highly-compressed superconductors