Berlin 2012 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 93: Poster Session: Metal-Semiconductor Hybrid Systems, Plasmonic Systems / Photonic Crystals / Carbon: Diamond & CNT / Quantum Information Systems
HL 93.23: Poster
Donnerstag, 29. März 2012, 16:00–19:00, Poster D
Coherent Photon-spin Transfer with NV Center in Diamond — •Seyed Ali Momenzadeh1, Sen Yang1, Petr Siyushev1, Naofumi Abe2, Hideo Kosaka2, Helmut Fedder1, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart — 2Research Institute of Electrical Communication, Tohoku University, Japan
Nitrogen vacancy (NV) center in diamond is a solid state single photon source which has been under renewed research interest since decade. Possessing several remarkable advantages like photostability, relatively long coherence time, high ability for readout and manipulation of the spin state [1][2], etc, give it unique highlighting applications such as coherent multi-qubit registers. The NV center can be considered as an artificial atom inside diamond being served as a qubit for quantum information processing. In this scence, the interaction (markedly entanglement) between two NVs (as stationary qubits) or between an NV and photons (as flying qubits) is of great importance to study. In this work, I present the development of a cryogenic setup based on a commercial cold-finger cryostat equipped with a home-made confocal setup, ESR, and NMR instrumentations. Furthermore, I show our results studying the coherent spin-photon interactions. The better coherence conditions and other unique features observable at low temperatures [3] offer NV center as a promising system candidate for future applications in quantum information field like quantum repeaters.
[1] Science,329,542,(2010) [2] Nature,466,730,(2010) [3] NJP,11,113029,(2009)