Entangling Remote Nuclear Spins Linked by a Chromophore
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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.
Schaffry , M , Filidou , V , Karlen , S D , Gauger , E M , Benjamin , S C , Anderson , H L , Ardavan , A , Briggs , G A D , Maeda , K , Henbest , K B , Giustino , F , Morton , J J L & Lovett , B W 2010 , ' Entangling Remote Nuclear Spins Linked by a Chromophore ' Physical Review Letters , vol 104 , no. 20 , 200501 . DOI: 10.1103/PhysRevLett.104.200501
Physical Review Letters
© 2010. The American Physical Society.
This work was supported by the Marie Curie Early Stage Training network QIPEST (MESTCT-2005-020505), EPSRC through QIP IRC (GR/S82176/01 and GR/S15808/01), the National Research Foundation and Ministry of Education, Singapore, the DAAD, and the Royal Society.
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