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Entangling remote nuclear spins linked by a chromophore

Schaffry, M; Filidou, V; Karlen, SD; Gauger, EM; Benjamin, SC; Anderson, HL; Ardavan, A; ... Lovett, BW; + view all (2010) Entangling remote nuclear spins linked by a chromophore. Phys. Rev. Lett. , 104 (20) , Article 200501. 10.1103/PhysRevLett.104.200501. Green open access

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Abstract

Molecular nanostructures may constitute the fabric of future quantum technologies, if their degrees of freedom can be fully harnessed. Ideally one might use nuclear spins as low-decoherence qubits and optical excitations for fast controllable interactions. Here, we present a method for entangling two nuclear spins through their mutual coupling to a transient optically-excited electron spin, and investigate its feasibility through density functional theory and experiments on a test molecule. From our calculations we identify the specific molecular properties that permit high entangling power gates under simple optical and microwave pulses; synthesis of such molecules is possible with established techniques.

Type: Article
Title: Entangling remote nuclear spins linked by a chromophore
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.104.200501
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.104.200501
Language: English
Additional information: © 2010 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/1362748
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