Geometric spin echo under zero field

• Sekiguchi, Yuhei

• Komura, Yusuke

• Mishima, Shota

• Tanaka, Touta

• Niikura, Kaeko

• Kosaka, Hideo

Abstract

Spin echo is a fundamental tool for quantum registers and biomedical imaging. It is believed that a strong magnetic field is needed for the spin echo to provide long memory and high resolution, since a degenerate spin cannot be controlled or addressed under a zero magnetic field. While a degenerate spin is never subject to dynamic control, it is still subject to geometric control. Here we show the spin echo of a degenerate spin subsystem, which is geometrically controlled via a mediating state split by the crystal field, in a nitrogen vacancy centre in diamond. The demonstration reveals that the degenerate spin is protected by inherent symmetry breaking called zero-field splitting. The geometric spin echo under zero field provides an ideal way to maintain the coherence without any dynamics, thus opening the way to pseudo-static quantum random access memory and non-invasive biosensors.

Journal

• Nature Communications

  Nature Communications 7 11668-, 2016-05-19

  Nature Publishing Group

Keywords

• General Physics and Astronomy
• General Biochemistry, Genetics and Molecular Biology
• General Chemistry
• Multidisciplinary

Details

• CRID: 1050282812777408384
• NII Article ID: 120006501254
• NII Book ID: AA12645905
• ISSN: 20411723
• DOI: 10.1038/ncomms11668
• Web Site: http://hdl.handle.net/10131/00011966
• Web Site: https://www.nature.com/articles/ncomms11668.pdf
• Web Site: https://www.nature.com/articles/ncomms11668
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN