Berlin 2008 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 31: Quantum dynamics, decoherence and quantum information

DY 31.8: Talk

Friday, February 29, 2008, 12:00–12:15, MA 004

Decoherence properties of entangled single nuclear spins and one electron spin at room temperature in diamond — •Philipp Neumann, Torsten Gaebel, Florian Rempp, Christian Zierl, Fedor Jelezko, and Jörg Wrachtrup — 3. Physikalisches Institut, Universität Stuttgart, Germany

Generation of long-lived entanglement between single qubits is at the heart of quantum information processing. Since the coherence between single qubits in solid state systems is rather fragile one is looking for qubits with long coherence lifetimes. Those could be nuclear spins. In our case we use the electron spin of the NV-center in diamond to generate Bell States between two qubits associated with two proximal ¹³C nuclear spins. Eventually the electron spin itself is used as a qubit and 3-particle entanglement is generated. The decoherence properties of these entangled states are investigated.