Fast room-temperature phase gate on a single nuclear spin in diamond

S. Sangtawesin, T. O. Brundage, J. R. Petta

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Nuclear spins support long lived quantum coherence due to weak coupling to the environment, but are difficult to rapidly control using nuclear magnetic resonance as a result of the small nuclear magnetic moment. We demonstrate a fast ∼500ns nuclear spin phase gate on a N14 nuclear spin qubit intrinsic to a nitrogen-vacancy center in diamond. The phase gate is enabled by the hyperfine interaction and off-resonance driving of electron spin transitions. Repeated applications of the phase gate bang-bang decouple the nuclear spin from the environment, locking the spin state for up to ∼140μs.

Original languageEnglish (US)
Article number020506
JournalPhysical review letters
Volume113
Issue number2
DOIs
StatePublished - Jul 11 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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