Berlin 2014 – scientific programme
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MO: Fachverband Molekülphysik
MO 12: Experimental Techniques 2
MO 12.5: Talk
Wednesday, March 19, 2014, 15:15–15:30, BEBEL SR144
Nuclear spin control with a transient electron spin ancilla — •Helmut Fedder1, Sang-Yun Lee1, Matthias Widmann1, Torsten Rendler1, Marcus Doherty2, Neil Manson2, and Jörg Wrachtrup1 — 13. Physikalisches Institut and Research Center SCoPE, University Stuttgart, Germany — 2Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra, Australia
Electron spins associated with point defects in crystals are promising systems
for solid state quantum technology [1-3]. In particular, defects with a
spin-less ground state and an excited triplet state have been proposed as
universal ancillae for addressing nuclear spins [2]. In here we demonstrate the
control of an individual 13C lattice nuclear spin in diamond by exploiting
a novel electron spin defect that features an excited triplet state.
Using optical and microwave control, we demonstrate coherent manipulation of the
triplet electron spin and characterize its photo-physics. We then show coherent
manipulation of the nuclear spin in the spin-less electronic ground
state.
[1] J.J.L. Morton et al. Solid-state quantum memory using the 31P nuclear spin.
Nature 455, 1085 (2008).
[2] V. Filidou et al. Ultrafast entangling gates between nuclear spins
using photoexcited triplet states. Nature Phys. 8, 596 (2012).
[3] P.C. Maurer et al. Room-Temperature Quantum Bit Memory Exceeding One Second.
Science 336, 1283 (2012).