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