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Title: A neutral oxygen-vacancy center in diamond: A plausible qubit candidate and its spintronic and electronic properties

Spintronic and electronic properties of a neutral oxygen-vacancy (O-V) center, an isoelectronic defect similar to the negatively charged nitrogen-vacancy center in diamond, were studied by combining first-principles calculations and a mean-field theory for spin hyperfine interaction. It is elucidated that the neutral O-V center is stable in the p-type diamond and possesses an S = 1 triplet ground state and four spin-conserved excited states with the spin coherence times in an order of second at T = 0 K. The results indicate that the neutral O-V center is another promising candidate for spin coherent manipulation and qubit operation.
Authors:
; ; ; ; ; ; ;  [1] ;  [2]
  1. Key Laboratory of Polar Materials and Devices, Ministry of Education of China, East China Normal University, Shanghai 200241 (China)
  2. Supercomputer Center, Administration Department of Equipments, East China Normal University, Shanghai 200062 (China)
Publication Date:
OSTI Identifier:
22314491
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DIAMONDS; EXCITED STATES; GROUND STATES; MEAN-FIELD THEORY; NITROGEN; OXYGEN; QUBITS; SPIN; TRIPLETS; VACANCIES