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  Protecting a Diamond Quantum Memory by Charge State Control

Pfender, M., Aslam, N., Simon, P., Antonov, D., Thiering, G., Burk, S., et al. (2017). Protecting a Diamond Quantum Memory by Charge State Control. Nano Letters, 17(10), 5931-5937.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-D020-2 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-D021-1
Genre: Journal Article

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 Creators:
Pfender, M., Author
Aslam, N., Author
Simon, P., Author
Antonov, D., Author
Thiering, G., Author
Burk, S., Author
de Oliveira, F., Author
Denisenko, A., Author
Fedder, H., Author
Meijer, J., Author
Garrido, J., Author
Gali, A., Author
Teraji, T., Author
Isoya, J., Author
Doherty, M., Author
Alkauskas, A., Author
Gallo, A., Author
Grüneis, A.1, Author
Neumann, P., Author
Wrachtrup, J., Author
Affiliations:
1Max Planck Society, ou_persistent13              

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Free keywords: Diamond; nitrogen-vacancy center; charge state control; spin qubit; quantum memory
 Abstract: In recent years, solid-state spin systems have emerged as promising candidates for quantum information processing. Prominent examples are the nitrogen-vacancy (NV) center in diamond, phosphorus dopants in silicon (Si:P), rare-earth ions in solids, and V-si-centersin silicon-carbide. The Si:P system has demonstrated that its nuclear spins can yield exceedingly long spin coherence times by eliminating the electron spin of the dopant. For NV centers, however, a proper charge state for storage of nuclear spin qubit coherence has not been identified yet. Here, we identify and characterize the positively charged NV center as an electron spin-less and optically inactive state by utilizing the nuclear spin qubit as a probe. We control the electronic charge and spin utilizing nanometer scale gate electrodes. We achieve a lengthening of the nuclear spin coherence times by a factor of 4. Surprisingly, the new charge state allows switching of the optical response of single nodes facilitating full individual addressability.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 735066
ISI: 000413057500009
 Degree: -

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Title: Nano Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: WASHINGTON : AMER CHEMICAL SOC
Pages: - Volume / Issue: 17 (10) Sequence Number: - Start / End Page: 5931 - 5937 Identifier: ISSN: 1530-6984