title: Entangling remote nuclear spins linked by a chromophore.
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.
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Schaffry
authors.forename: V
authors.initials: V
authors.lastname: Filidou
authors.forename: S D
authors.initials: SD
authors.lastname: Karlen
authors.forename: E M
authors.initials: EM
authors.lastname: Gauger
authors.forename: S C
authors.initials: SC
authors.lastname: Benjamin
authors.forename: H L
authors.initials: HL
authors.lastname: Anderson
authors.forename: A
authors.initials: A
authors.lastname: Ardavan
authors.forename: G A D
authors.initials: GA
authors.lastname: Briggs
authors.forename: K
authors.initials: K
authors.lastname: Maeda
authors.forename: K B
authors.initials: KB
authors.lastname: Henbest
authors.forename: F
authors.initials: F
authors.lastname: Giustino
authors.forename: J J L
authors.initials: JJ
authors.lastname: Morton
authors.forename: B W
authors.initials: BW
authors.lastname: Lovett