Protecting a Diamond Quantum Memory by Charge State Control

Matthias Pfender; Nabeel Aslam; Patrick Simon; Denis Antonov; Gergo Thiering; Sina Burk; Felipe Fávaro De Oliveira; Andrej Denisenko; Helmut Fedder; Jan Meijer; Jose A. Garrido; Adam Gali; Tokuyuki Teraji; Junichi Isoya; Marcus William Doherty; Audrius Alkauskas; Alejandro Gallo; Andreas Grüneis; Philipp Neumann; Jörg Wrachtrup

doi:10.1021/acs.nanolett.7b01796

Protecting a Diamond Quantum Memory by Charge State Control

Matthias Pfender, Nabeel Aslam, Patrick Simon, Denis Antonov, Gergo Thiering, Sina Burk, Felipe Fávaro De Oliveira, Andrej Denisenko, Helmut Fedder, Jan Meijer, Jose A. Garrido, Adam Gali, Tokuyuki Teraji, Junichi Isoya, Marcus William Doherty, Audrius Alkauskas, Alejandro Gallo, Andreas Grüneis, Philipp Neumann^*, Jörg Wrachtrup

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

73 Citations (Scopus)

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-centers in 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.

Original language	English
Pages (from-to)	5931-5937
Number of pages	7
Journal	Nano Letters
Volume	17
Issue number	10
DOIs	https://doi.org/10.1021/acs.nanolett.7b01796
Publication status	Published - 11 Oct 2017

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Pfender, M., Aslam, N., Simon, P., Antonov, D., Thiering, G., Burk, S., Fávaro De Oliveira, F., Denisenko, A., Fedder, H., Meijer, J., Garrido, J. A., Gali, A., Teraji, T., Isoya, J., Doherty, M. W., Alkauskas, A., Gallo, A., Grüneis, A., Neumann, P., & Wrachtrup, J. (2017). Protecting a Diamond Quantum Memory by Charge State Control. Nano Letters, 17(10), 5931-5937. https://doi.org/10.1021/acs.nanolett.7b01796

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title = "Protecting a Diamond Quantum Memory by Charge State Control",

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 VSi-centers in 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.",

keywords = "Diamond, charge state control, nitrogen-vacancy center, quantum memory, spin qubit",

author = "Matthias Pfender and Nabeel Aslam and Patrick Simon and Denis Antonov and Gergo Thiering and Sina Burk and {F{\'a}varo De Oliveira}, Felipe and Andrej Denisenko and Helmut Fedder and Jan Meijer and Garrido, {Jose A.} and Adam Gali and Tokuyuki Teraji and Junichi Isoya and Doherty, {Marcus William} and Audrius Alkauskas and Alejandro Gallo and Andreas Gr{\"u}neis and Philipp Neumann and J{\"o}rg Wrachtrup",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

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doi = "10.1021/acs.nanolett.7b01796",

language = "English",

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Pfender, M, Aslam, N, Simon, P, Antonov, D, Thiering, G, Burk, S, Fávaro De Oliveira, F, Denisenko, A, Fedder, H, Meijer, J, Garrido, JA, Gali, A, Teraji, T, Isoya, J, Doherty, MW, Alkauskas, A, Gallo, A, Grüneis, A, Neumann, P & Wrachtrup, J 2017, 'Protecting a Diamond Quantum Memory by Charge State Control', Nano Letters, vol. 17, no. 10, pp. 5931-5937. https://doi.org/10.1021/acs.nanolett.7b01796

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T1 - Protecting a Diamond Quantum Memory by Charge State Control

AU - Pfender, Matthias

AU - Aslam, Nabeel

AU - Simon, Patrick

AU - Antonov, Denis

AU - Thiering, Gergo

AU - Burk, Sina

AU - Fávaro De Oliveira, Felipe

AU - Denisenko, Andrej

AU - Fedder, Helmut

AU - Meijer, Jan

AU - Garrido, Jose A.

AU - Gali, Adam

AU - Teraji, Tokuyuki

AU - Isoya, Junichi

AU - Doherty, Marcus William

AU - Alkauskas, Audrius

AU - Gallo, Alejandro

AU - Grüneis, Andreas

AU - Neumann, Philipp

AU - Wrachtrup, Jörg

PY - 2017/10/11

Y1 - 2017/10/11

N2 - 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 VSi-centers in 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.

AB - 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 VSi-centers in 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.

KW - Diamond

KW - charge state control

KW - nitrogen-vacancy center

KW - quantum memory

KW - spin qubit

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DO - 10.1021/acs.nanolett.7b01796

M3 - Article

SN - 1530-6984

VL - 17

SP - 5931

EP - 5937

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

Protecting a Diamond Quantum Memory by Charge State Control

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