Skip to content
6CCVD Research

Coherence of NV defects in isotopically enriched 6H-28SiC at ambient conditions

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2024-11-11
JournalApplied Physics Letters
AuthorsFadis F. Murzakhanov, G. V. Mamin, Margarita A. Sadovnikova, E. N. Mokhov, S. S. Nagalyuk
InstitutionsKazan Federal University, Ioffe Institute
Citations2

Abstract

Section titled ā€œAbstractā€

The unique spin-optical properties of NV defects in SiC, coupled with silicon carbideā€™s advanced technology compared to diamond, make them a promising candidate for quantum technology applications. In this study, using photoinduced pulse ESR at 94 GHz (3.4 T), we reveal the room temperature spin coherence of NV defects in 6H-28SiC, purified to reduce 29Si concentration to ā‰ˆ1%, four times below its natural level. We demonstrate room temperature (300 K) Hahn-echo coherence time T2 = 23.6 Ī¼s, spin-lattice relaxation time T1 = 0.1 ms, and coherent control over optically polarized NV spin states through Rabi nutation experiments. We reveal long inhomogeneous dephasing time T2* = 1.5 Ī¼s, which is about five times greater than that measured for NV defects in SiC with natural isotopic content. Our observations highlight again the potential of NV defects in 6H-28SiC, which exhibit near-infrared optical excitation and emission properties compatible with O-band fiber optics, as promising candidates for applications in quantum sensing, communication, and computation.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2018 - Quantum technologies with optically interfaced solid-state spins [Crossref]
  2. 2021 - Quantum guidelines for solid-state spin defects [Crossref]
  3. 2011 - Room temperature coherent control of defect spin qubits in silicon carbide [Crossref]
  4. 2012 - Room temperature coherent spin alignment of silicon vacancies in - and -SiC [Crossref]
  5. 2015 - Engineering near-infrared single-photon emitters with optically active spins in ultrapure silicon carbide [Crossref]
  6. 2015 - Coherent control of single spins in silicon carbide at room temperature [Crossref]
  7. 2017 - Isolated spin qubits in SiC with a high-fidelity infrared spin-to-photon interface [Crossref]
  8. 2022 - Fabrication and nanophotonic waveguide integration of silicon carbide colour centres with preserved spin-optical coherence [Crossref]
  9. 2021 - Electron nuclear interactions in spin-3/2 color centers in silicon carbide: A high-field pulse epr and endor study [Crossref]
  10. 2024 - High-fidelity optical readout of a nuclear-spin qubit in silicon carbide [Crossref]

Reads Similar to This

Fabrication of High Thermal Conductivity NARloy-Z-Diamond Composite Combustion Chamber Liner for Advanced Rocket Engines Deep learning enhanced individual nuclear-spin detection Charge-carrier mobility in hydrogen-terminated diamond field-effect transistors