Long-range photon-mediated gate scheme between nuclear spin qubits in diamond


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AUER, Adrian, Guido BURKARD, 2016. Long-range photon-mediated gate scheme between nuclear spin qubits in diamond. In: Physical Review B. 93(3), 035402. ISSN 2469-9950. eISSN 2469-9969

@article{Auer2016Long--33409, title={Long-range photon-mediated gate scheme between nuclear spin qubits in diamond}, year={2016}, doi={10.1103/PhysRevB.93.035402}, number={3}, volume={93}, issn={2469-9950}, journal={Physical Review B}, author={Auer, Adrian and Burkard, Guido}, note={Article Number: 035402} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/33409"> <dcterms:title>Long-range photon-mediated gate scheme between nuclear spin qubits in diamond</dcterms:title> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-03-22T14:55:35Z</dc:date> <dcterms:abstract xml:lang="eng">Defect centers in diamond are exceptional solid-state quantum systems that can have exceedingly long electron and nuclear spin coherence times. So far, single-qubit gates for the nitrogen nuclear spin, a two-qubit gate with a nitrogen-vacancy (NV) center electron spin, and entanglement between nearby nitrogen nuclear spins have been demonstrated. Here, we develop a scheme to implement a universal two-qubit gate between two distant nitrogen nuclear spins. Virtual excitation of an NV center that is embedded in an optical cavity can scatter a laser photon into the cavity mode; we show that this process depends on the nuclear spin state of the nitrogen atom. If two NV centers are simultaneously coupled to a common cavity mode and individually excited, virtual cavity photon exchange can mediate an effective interaction between the nuclear spin qubits, conditioned on the spin state of both nuclei, which implements a universal controlled-Z gate. We predict operation times below 10μs, which is four orders of magnitude faster than the decoherence time of nuclear spin qubits in diamond.</dcterms:abstract> <dc:contributor>Burkard, Guido</dc:contributor> <dcterms:issued>2016</dcterms:issued> <dc:language>eng</dc:language> <dc:creator>Auer, Adrian</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/33409"/> <dc:creator>Burkard, Guido</dc:creator> <dc:contributor>Auer, Adrian</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-03-22T14:55:35Z</dcterms:available> </rdf:Description> </rdf:RDF>

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