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, A. Gali, Tokuyuki Teraji, Junichi Isoya, Marcus William Doherty, Audrius Alkauskas, Alejandro Gallo, Andreas Grüneis, Philipp Neumann, Jörg Wrachtrup

Research output: Contribution to journalArticle

21 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 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.

Original languageEnglish
Pages (from-to)5931-5937
Number of pages7
JournalNano Letters
Volume17
Issue number10
DOIs
Publication statusPublished - Oct 11 2017

Fingerprint

Diamond
nuclear spin
Vacancies
Diamonds
Nitrogen
diamonds
Data storage equipment
Doping (additives)
nitrogen
electron spin
Electrons
Silicon
Silicon carbide
Phosphorus
Rare earths
silicon carbides
Ions
phosphorus
Electrodes
rare earth elements

Keywords

  • charge state control
  • Diamond
  • nitrogen-vacancy center
  • quantum memory
  • spin qubit

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Pfender, M., Aslam, N., Simon, P., Antonov, D., Thiering, G., Burk, S., ... 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

Protecting a Diamond Quantum Memory by Charge State Control. / Pfender, Matthias; Aslam, Nabeel; Simon, Patrick; Antonov, Denis; Thiering, Gergo; Burk, Sina; Fávaro De Oliveira, Felipe; Denisenko, Andrej; Fedder, Helmut; Meijer, Jan; Garrido, Jose A.; Gali, A.; Teraji, Tokuyuki; Isoya, Junichi; Doherty, Marcus William; Alkauskas, Audrius; Gallo, Alejandro; Grüneis, Andreas; Neumann, Philipp; Wrachtrup, Jörg.

In: Nano Letters, Vol. 17, No. 10, 11.10.2017, p. 5931-5937.

Research output: Contribution to journalArticle

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
Pfender M, Aslam N, Simon P, Antonov D, Thiering G, Burk S et al. Protecting a Diamond Quantum Memory by Charge State Control. Nano Letters. 2017 Oct 11;17(10):5931-5937. https://doi.org/10.1021/acs.nanolett.7b01796
Pfender, Matthias ; Aslam, Nabeel ; Simon, Patrick ; Antonov, Denis ; Thiering, Gergo ; Burk, Sina ; Fávaro De Oliveira, Felipe ; Denisenko, Andrej ; Fedder, Helmut ; Meijer, Jan ; Garrido, Jose A. ; Gali, A. ; Teraji, Tokuyuki ; Isoya, Junichi ; Doherty, Marcus William ; Alkauskas, Audrius ; Gallo, Alejandro ; Grüneis, Andreas ; Neumann, Philipp ; Wrachtrup, Jörg. / Protecting a Diamond Quantum Memory by Charge State Control. In: Nano Letters. 2017 ; Vol. 17, No. 10. pp. 5931-5937.
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