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 language | English (US) |
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Article number | 020506 |
Journal | Physical review letters |
Volume | 113 |
Issue number | 2 |
DOIs | |
State | Published - Jul 11 2014 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy