Universal coherence protection in a solid-state spin qubit
Abstract
Decoherence limits the physical realization of qubits, and its mitigation is critical for the development of quantum science and technology. In this study, we construct a robust qubit embedded in a decoherence-protected subspace, obtained by applying microwave dressing to a clock transition of the ground-state electron spin of a silicon carbide divacancy defect. The qubit is universally protected from magnetic, electric, and temperature fluctuations, which account for nearly all relevant decoherence channels in the solid state. This culminates in an increase of the qubit’s inhomogeneous dephasing time by more than four orders of magnitude (to >22 milliseconds), while its Hahn-echo coherence time approaches 64 milliseconds. Requiring few key platform-independent components, this result suggests that substantial coherence improvements can be achieved in a wide selection of quantum architectures.
- Authors:
-
- Univ. of Chicago, IL (United States)
- Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- National Institutes for Quantum and Radiological Science and Technology, Watanuki, Takasaki (Japan)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE; USDOD; Defense Advanced Research Projects Agency (DARPA); US Department of the Navy, Office of Naval Research (ONR); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS)
- OSTI Identifier:
- 1674973
- Grant/Contract Number:
- AC02-06CH11357; D18AC00015KK1932; FA9550-19-1-0358; N00014-17-1-3026; DMR-1420709; 18H03770; 20H00355; ECCS-1542205
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science
- Additional Journal Information:
- Journal Volume: 369; Journal Issue: 6510; Journal ID: ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Miao, Kevin C., Blanton, Joseph P., Anderson, Christopher P., Bourassa, Alexandre, Crook, Alexander L., Wolfowicz, Gary, Abe, Hiroshi, Ohshima, Takeshi, and Awschalom, David D. Universal coherence protection in a solid-state spin qubit. United States: N. p., 2020.
Web. doi:10.1126/science.abc5186.
Miao, Kevin C., Blanton, Joseph P., Anderson, Christopher P., Bourassa, Alexandre, Crook, Alexander L., Wolfowicz, Gary, Abe, Hiroshi, Ohshima, Takeshi, & Awschalom, David D. Universal coherence protection in a solid-state spin qubit. United States. https://doi.org/10.1126/science.abc5186
Miao, Kevin C., Blanton, Joseph P., Anderson, Christopher P., Bourassa, Alexandre, Crook, Alexander L., Wolfowicz, Gary, Abe, Hiroshi, Ohshima, Takeshi, and Awschalom, David D. Fri .
"Universal coherence protection in a solid-state spin qubit". United States. https://doi.org/10.1126/science.abc5186. https://www.osti.gov/servlets/purl/1674973.
@article{osti_1674973,
title = {Universal coherence protection in a solid-state spin qubit},
author = {Miao, Kevin C. and Blanton, Joseph P. and Anderson, Christopher P. and Bourassa, Alexandre and Crook, Alexander L. and Wolfowicz, Gary and Abe, Hiroshi and Ohshima, Takeshi and Awschalom, David D.},
abstractNote = {Decoherence limits the physical realization of qubits, and its mitigation is critical for the development of quantum science and technology. In this study, we construct a robust qubit embedded in a decoherence-protected subspace, obtained by applying microwave dressing to a clock transition of the ground-state electron spin of a silicon carbide divacancy defect. The qubit is universally protected from magnetic, electric, and temperature fluctuations, which account for nearly all relevant decoherence channels in the solid state. This culminates in an increase of the qubit’s inhomogeneous dephasing time by more than four orders of magnitude (to >22 milliseconds), while its Hahn-echo coherence time approaches 64 milliseconds. Requiring few key platform-independent components, this result suggests that substantial coherence improvements can be achieved in a wide selection of quantum architectures.},
doi = {10.1126/science.abc5186},
journal = {Science},
number = 6510,
volume = 369,
place = {United States},
year = {Fri Sep 18 00:00:00 EDT 2020},
month = {Fri Sep 18 00:00:00 EDT 2020}
}
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