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6CCVD Research

Laser writing of preferentially orientated nitrogen-vacancy centers in diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-12-01
JournalCarbon Trends
AuthorsKohei Kinouchi, Yasuhiko Shimotsuma, Mitsuharu Uemoto, Masanori Fujiwara, Norikazu Mizuochi
InstitutionsKobe University, Kyoto University
Citations1

Abstract

Section titled ā€œAbstractā€

Nitrogen-vacancy centers in diamond have gained widespread attention as quantum systems that can be applied in quantum information devices. The excellent properties of quantum devices can be enhanced using preferentially oriented nitrogen-vacancy (NV) centers. However, thus far, orientation control has been achieved only via chemical vapor deposition. In this study, we demonstrate the creation of preferentially oriented NV centers via laser writing. The alignment ratio of ensemble NV centers is biased along the direction parallel to [111], depending on the femtosecond laser polarization, causing an increase of 55 % in contrast to the optically magnetic resonance signal at maximum compared with 25 % in random orientation. Based on time-dependent density-functional theory (TDDFT) simulations and experimental observations, such complex polarization dependence can be attributed to the anisotropy of electron excitation. This technique provides a new optical fabrication method for engineered materials and devices used in quantum technology.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2011 - A quantum memory intrinsic to single nitrogen-vacancy centres in diamond [Crossref]
  2. 2019 - Ultra-long coherence times amongst room-temperature solid-state spins [Crossref]
  3. 2004 - Observation of coherent oscillation of a single nuclear spin and realization of a two-Qubit conditional quantum gate [Crossref]
  4. 2002 - Single photon quantum cryptography [Crossref]
  5. 2012 - Electrically driven single-photon source at room temperature in diamond [Crossref]
  6. 2009 - Diamonds with a high density of nitrogen-vacancy centers for magnetometry applications [Crossref]
  7. 2008 - High-sensitivity diamond magnetometer with nanoscale resolution [Crossref]
  8. 2018 - Spin properties of NV centers in high-pressure, high-temperature grown diamond [Crossref]
  9. 2012 - Enhanced metrology using preferential orientation of nitrogen-vacancy centers in diamond [Crossref]
  10. 2019 - Increased nitrogen-vacancy centre creation yield in diamond through electron beam irradiation at high temperature [Crossref]

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