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6CCVD Research

Decoherence-protected quantum register of nuclear spins in diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-01-10
JournalQuantum Science and Technology
AuthorsF.J. Gonzalez, RaĆŗl Coto
InstitutionsUniversidad Mayor
Citations9

Abstract

Section titled ā€œAbstractā€

Abstract Solid-state quantum registers are exceptional for storing quantum information at room temperature with long coherence time. Nevertheless, practical applications toward quantum supremacy require even longer coherence time to allow for more complex algorithms. In this work we propose a quantum register that lies in a decoherence-protected subspace to be implemented with nuclear spins nearby a nitrogen-vacancy center in diamond. The quantum information is encoded in two logical states composed of two carbon-13 nuclear spins, while an electron spin is used as ancilla for initialization and control. Moreover, by tuning an off-axis magnetic field we enable non-nuclear-spin-preserving transitions that we use for preparing and manipulating the register through stimulating Raman adiabatic passage. Furthermore, we consider more elaborated sequences to improve simultaneous control over the system yielding decreased gate time.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2008 - Nanoscale imaging magnetometry with diamond spins under ambient conditions [Crossref]
  2. 2017 - Quantum sensing [Crossref]
  3. 2018 - Material platforms for spin-based photonic quantum technologies [Crossref]
  4. 2018 - Quantum technologies with optically interfaced solid-state spins [Crossref]
  5. 2015 - Loophole-free bell inequality violation using electron spins separated by 1.3 kilometres [Crossref]
  6. 2006 - Processing quantum information in diamond [Crossref]
  7. 2009 - Ultralong spin coherence time in isotopically engineered diamond [Crossref]
  8. 2013 - Solid-state electronic spin coherence time approaching one second [Crossref]
  9. 2014 - Manipulating a qubit through the backaction of sequential partial measurements and real-time feedback [Crossref]
  10. 2009 - Gigahertz dynamics of a strongly driven single quantum spin [Crossref]

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