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6CCVD Research

Deterministic creation of strained color centers in nanostructures via high-stress thin films

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-12-11
JournalApplied Physics Letters
AuthorsDaniel AssumpĆ§Ć£o, Chang Jin, Madison Sutula, Sophie W. Ding, Phuong Pham
InstitutionsHarvard University
Citations11

Abstract

Section titled ā€œAbstractā€

Color centers have emerged as a leading qubit candidate for realizing hybrid spin-photon quantum information technology. One major limitation of the platform, however, is that the characteristics of individual color centers are often strain dependent. As an illustrative case, the silicon-vacancy center in diamond typically requires millikelvin temperatures in order to achieve long coherence properties, but strained silicon-vacancy centers have been shown to operate at temperatures beyond 1 K without phonon-mediated decoherence. In this work, we combine high-stress silicon-nitride thin films with diamond nanostructures to reproducibly create statically strained silicon-vacancy color centers (mean ground state splitting of 608 GHz) with strain magnitudes of āˆ¼4Ɨ10āˆ’4. Based on modeling, this strain should be sufficient to allow for operation of a majority silicon-vacancy centers within the measured sample at elevated temperatures (1.5 K) without any degradation of their spin properties. This method offers a scalable approach to fabricate high-temperature operation quantum memories. Beyond silicon-vacancy centers, this method is sufficiently general that it can be easily extended to other platforms as well.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2019 - Quantum nanophotonics with group IV defects in diamond [Crossref]
  2. 2021 - Quantum networks based on color centers in diamond [Crossref]
  3. 2020 - Silicon carbide color centers for quantum applications [Crossref]
  4. 2022 - High-fidelity multiphoton-entangled cluster state with solid-state quantum emitters in photonic nanostructures [Crossref]
  5. 2008 - The quantum internet [Crossref]
  6. 2016 - Narrow-linewidth homogeneous optical emitters in diamond nanostructures via silicon ion implantation [Crossref]
  7. 2019 - An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond [Crossref]
  8. 2022 - Efficient source of shaped single photons based on an integrated diamond nanophotonic system [Crossref]
  9. 2020 - Experimental demonstration of memory-enhanced quantum communication [Crossref]
  10. 2018 - Strain engineering of the silicon-vacancy center in diamond [Crossref]

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