Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M29: Semiconductor Qubits - Novel Spin Qubit Materials and Technologies I
11:30 AM–2:30 PM,
Wednesday, March 17, 2021
Sponsoring
Unit:
DQI
Chair: Daniel Keith
Abstract: M29.00009 : Vanadium spin qubits as telecom quantum emitters in silicon carbide*
1:06 PM–1:18 PM
Live
Presenter:
Gary Wolfowicz
(Center for Molecular Engineering, Materials Science Division, Argonne National Laboratory)
Authors:
Gary Wolfowicz
(Center for Molecular Engineering, Materials Science Division, Argonne National Laboratory)
Christopher Anderson
(Pritzker School of Molecular Engineering, University of Chicago)
Berk Diler Kovos
(Pritzker School of Molecular Engineering, University of Chicago)
Oleg Poluektov
(Chemical Sciences and Engineering Division, Argonne National Laboratory)
F. Joseph
(Center for Molecular Engineering, Materials Science Division, Argonne National Laboratory)
David Awschalom
(Center for Molecular Engineering, Materials Science Division, Argonne National Laboratory)
We characterize the complex d1 orbital physics in vanadium ensembles in all five sites available in 4H- and 6H-SiC. The optical transitions are observed to be sensitive to mass shifts from the distribution of nearest neighbor silicon and carbon isotopes, enabling optically resolved nuclear spin registers. Optically detected magnetic resonance of ground and excited states’ spin transitions reveal diverse hyperfine interactions with the vanadium nuclear spin and offer clock transitions for use as quantum memories. Finally, we demonstrate coherent quantum control of the spin state at 3.3 K. These results provide a path for solid-state telecom emitters for quantum applications.
[1] G. Wolfowicz, et al., Science Advances 6 (18), eaaz1192 (2020)
*Supported by AFOSR, DOE, DARPA, ONR.
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