2014/03/31 by Sorawis Sangtawesin, S. Sangtawesin, T. O. Brundage +2
Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Atomic physics #Condensed matter physics #Diamond #Diamond and Carbon-based Materials Research #Electron #Force Microscopy Techniques and Applications #Free induction decay #Hyperfine structure #Materials science #Nuclear magnetic moment #Nuclear physics #Phase (matter) #Physics #Quantum mechanics #Spin (aerodynamics) #Spin echo #Spin magnetic moment #Spin polarization #Spins #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.113.020506
published as Phys. Rev. Lett. 113, 020506 (2014) · Related papers at http://pettagroup.princeton.edu
openalex publication_date 2014/07/11 · arxiv created 2014/07/14 · arxiv updated 2014/07/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 ∼500 ns nuclear spin phase gate on a (14)N 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 ∼140 μs.