TY  - JOUR
AU  - Chiesa, Alessandro
AU  - Whitehead, George F. S.
AU  - Carretta, Stefano
AU  - Carthy, Laura
AU  - Timco, Grigore A.
AU  - Teat, Simon J.
AU  - Amoretti, Giuseppe
AU  - Pavarini, Eva
AU  - Winpenny, Richard E. P.
AU  - Santini, Paolo
TI  - Molecular nanomagnets with switchable coupling for quantum simulation
JO  - Scientific reports
VL  - 4
SN  - 2045-2322
CY  - London
PB  - Nature Publishing Group
M1  - FZJ-2015-03740
SP  - 7423 -
PY  - 2014
AB  - Molecular nanomagnets are attractive candidate qubits because of their wide inter- and intra-molecular tunability. Uniform magnetic pulses could be exploited to implement one- and two-qubit gates in presence of a properly engineered pattern of interactions, but the synthesis of suitable and potentially scalable supramolecular complexes has proven a very hard task. Indeed, no quantum algorithms have ever been implemented, not even a proof-of-principle two-qubit gate. Here we show that the magnetic couplings in two supramolecular {Cr7Ni}-Ni-{Cr7Ni} assemblies can be chemically engineered to fit the above requisites for conditional gates with no need of local control. Microscopic parameters are determined by a recently developed many-body ab-initio approach and used to simulate quantum gates. We find that these systems are optimal for proof-of-principle two-qubit experiments and can be exploited as building blocks of scalable architectures for quantum simulation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000346288300001
C6  - pmid:25502419
DO  - DOI:10.1038/srep07423
UR  - https://juser.fz-juelich.de/record/201445
ER  -