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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum information: Quantum computers
Q 19.2: Vortrag
Montag, 18. März 2013, 17:00–17:15, E 214
Room temperature entanglement between single defect spins in diamond. — •Ingmar Jakobi1, Florian Dolde1, Boris Naydenov1,2, Nan Zhao1, Sébastien Pezzagna3, Jan Meijer3, Philipp Neumann1, Fedor Jelezko1,2, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Research Center SCoPE, and IQST, Universität Stuttgart, Germany — 2Institut für Quantenoptik, and IQST, Universität Ulm, Germany — 3RUBION, Ruhr Universität Bochum, 44780 Bochum, Germany
Entanglement is an important element of quantum technology providing new algorithms to quantum computers, the basis for quantum cryptography and increased sensitivity in quantum metrology.
Here we experimentally demonstrate entanglement between two single solid state spin quantum bits (qubits) at ambient conditions and present a method to preserve entangled states on a time-scale of milliseconds [1]. The qubits are associated with two engineered nitrogen-vacancy (NV) defect centers in diamond separated by a distance of 25 nm.
The experiments mark an important step towards a scalable room temperature quantum device.
[1] Dolde et al., Room temperature entanglement between distant single spins in diamond, arXiv:1212.2804, (2012)