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Title: Band-selective shaped pulse for high fidelity quantum control in diamond

High fidelity quantum control of qubits is crucially important for realistic quantum computing, and it becomes more challenging when there are inevitable interactions between qubits. We introduce a band-selective shaped pulse, refocusing BURP (REBURP) pulse, to cope with the problems. The electron spin of nitrogen-vacancy centers in diamond is flipped with high fidelity by the REBURP pulse. In contrast with traditional rectangular pulses, the shaped pulse has almost equal excitation effect in a sharply edged region (in frequency domain). So the three sublevels of host {sup 14}N nuclear spin can be flipped accurately simultaneously, while unwanted excitations of other sublevels (e.g., of a nearby {sup 13}C nuclear spin) is well suppressed. Our scheme can be used for various applications such as quantum metrology, quantum sensing, and quantum information process.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ; ;  [1] ;  [3] ;  [2] ;  [3] ;  [3]
  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
  2. Tsinghua National Laboratory for Information Science and Technology, Beijing 100084 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22303895
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CARBON 13; CONTROL; DIAMONDS; ELECTRONS; EXCITATION; INTERACTIONS; NITROGEN 14; PULSES; QUANTUM COMPUTERS; QUBITS; SPIN; VACANCIES