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Entangling Remote Nuclear Spins Linked by a Chromophore

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schaffry2010physrevlett200501.pdf (598.2Kb)
Date
21/05/2010
Author
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.
Keywords
Time-resolved EPR
Excited triplet
Double-resonance
Fullerene C-60
Pulsed endor
State
Spectroscopy
Molecules
Qubits
GHZ
Metadata
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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.
Citation
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 . https://doi.org/10.1103/PhysRevLett.104.200501
Publication
Physical Review Letters
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevLett.104.200501
ISSN
0031-9007
Type
Journal article
Rights
© 2010. The American Physical Society.
Description
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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  • University of St Andrews Research
URL
http://prl.aps.org/abstract/PRL/v104/i20/e200501
URI
http://hdl.handle.net/10023/5209

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