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Title: Resonant optical spectroscopy and coherent control of C r 4 + spin ensembles in SiC and GaN

Journal Article · · Physical Review B
 [1];  [2];  [2];  [2];  [3];  [3];  [2]
  1. Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Chicago, Chicago, IL (United States)
  3. Linkoping Univ., Linkoping (Sweden)

Spins bound to point defects are increasingly viewed as an important resource for solid-state implementations of quantum information technologies. In particular, there is a growing interest in the identification of new classes of defect spin that can be controlled optically. Here we demonstrate ensemble optical spin polarization and optically detected magnetic resonance (ODMR) of the S = 1 electronic ground state of chromium (Cr4+) impurities in silicon carbide (SiC) and gallium nitride (GaN). Polarization is made possible by the narrow optical linewidths of these ensembles (< 8.5 GHz), which are similar in magnitude to the ground state zero-field spin splitting energies of the ions at liquid helium temperatures. We therefore are able to optically resolve individual spin sublevels within the ensembles at low magnetic fields using resonant excitation from a cavity-stabilized, narrow-linewidth laser. Additionally, these near-infrared emitters possess exceptionally weak phonon sidebands, ensuring that > 73% of the overall optical emission is contained with the defects’ zero-phonon lines. Lastly, these characteristics make this semiconductor-based, transition metal impurity system a promising target for further study in the ongoing effort to integrate optically active quantum states within common optoelectronic materials.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Materials Sciences and Engineering Division; Air Force Research Laboratory (AFRL), Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); U.S. Army Research Laboratory, U.S. Army Research Office (ARO); Knut and Alice Wallenberg Foundation; Linkopng Linnaeus Initiative for Novel Functional Materials (LiLi-NFM)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1353030
Alternate ID(s):
OSTI ID: 1341283
Journal Information:
Physical Review B, Vol. 95, Issue 3; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (8)

Identification and tunable optical coherent control of transition-metal spins in silicon carbide journal October 2018
Coherent control and high-fidelity readout of chromium ions in commercial silicon carbide journal January 2020
Material platforms for spin-based photonic quantum technologies journal April 2018
Optical Properties of Vanadium in 4 H Silicon Carbide for Quantum Technology journal July 2019
Room temperature solid-state quantum emitters in the telecom range journal March 2018
Quantum defects by design journal October 2019
Isolated spin qubits in SiC with a high-fidelity infrared spin-to-photon interface text January 2017
Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control text January 2018

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