Entanglement in a molecular magnet dimer
· Invited
Abstract
Entanglement is a crucial resource for quantum information processing and its detection and quantification is of paramount importance in many areas of current research. Weakly coupled molecular nanomagnets provide an ideal test bed for investigating entanglement between complex spin systems. However, entanglement in these systems has only been experimentally demonstrated rather indirectly by macroscopic techniques or by fitting trial model Hamiltonians to experimental data. We have exploited the capabilities of four-dimensional inelastic neutron scattering (INS) to portray entanglement in weakly coupled molecular qubits and to quantify it [1]. The INS measurements on the prototype (Cr7Ni)2 supramolecular dimer has allowed us to demonstrate the potential of this approach, which allows one to extract the concurrence in eigenstates of a dimer of molecular qubits.
References
1. E. Garlatti, T. Guidi, S. Ansbro, P. Santini, G. Amoretti, J. Ollivier, H. Mutka, G. Timco, I.J. Vitorica-Yrezabal, G.F.S. Whitehead, R.E.P. Winpenny, & S. Carretta, Nat. Comm. 8, 14543 (2017).
References
1. E. Garlatti, T. Guidi, S. Ansbro, P. Santini, G. Amoretti, J. Ollivier, H. Mutka, G. Timco, I.J. Vitorica-Yrezabal, G.F.S. Whitehead, R.E.P. Winpenny, & S. Carretta, Nat. Comm. 8, 14543 (2017).
*Financial support from the FIRB Project No. RBFR12RPD1 of the Italian Ministry of Education and Research and from EPSRC(UK) grant number EP/K039547/1.We acknowledge the Institute Laue-Langevin and the ISIS Neutron and Muon Source for the neutron beamtime.
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Presenters
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Tatiana Guidi
- ISIS, STFC, ISIS facility, Rutherford Appleton Laboratory
- Rutherford Appleton Laboratory