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Switchable interaction in molecular double qubits

DOI: 10.1016/j.chempr.2016.10.001 DOI Help

Authors: Jesus Ferrando Soria (University of Manchester) , Samantha a. Magee (University of Manchester) , Alessandro Chiesa (Università di Parma) , Stefano Carretta (Università di Parma) , Paolo Santini (Università di Parma) , Inigo Vitorica-Yrezabal1 (University of Manchester) , Floriana Tuna (University of Manchester) , George F. S. Whitehead (University of Manchester) , Stephen Sproules (University of Manchester; University of Glasgow) , Kyle m. Lancaster (Cornell University) , Anne-Laure Barra (Laboratoire National des Champs Magnétiques Intenses) , Grigore a. Timco (University of Manchester) , Eric J. L. Mcinnes (University of Manchester) , Richard e. P. Winpenny (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chem , VOL 1 , PAGES 727 - 752

State: Published (Approved)
Published: November 2016

Open Access Open Access

Abstract: Quantum information processing (QIP) could revolutionize how we simulate and understand quantum systems. Any QIP scheme requires both individual units (qubits) that have long phase memories and switchable units that can be placed between the qubits. Here, we describe supramolecular systems where {Cr7Ni} rings are used as qubits, linked by redox-switchable {Ru2M} oxo-centered triangles (M = Zn, Ni, or Co). The supramolecular assemblies have been structurally characterized and involve two {Cr7Ni} rings bound to {Ru2M} triangles through iso-nicotinate ligands. Detailed physical studies, including electrochemistry and electron paramagnetic resonance spectroscopy, show that when M = Co, the supramolecular assembly has the physical characteristics needed to implement the √iSWAP gate, which is an important entangling two-qubit gate. Detailed simulations show that the fidelity of this gate is potentially very high and depends on the phase memory time of the {Cr7Ni} qubits but not the {Ru2Co} switch.

Subject Areas: Chemistry, Physics, Information and Communication Technology

Instruments: I19-Small Molecule Single Crystal Diffraction

Other Facilities: Stanford Synchrotron Radiation Lightsource

Added On: 18/11/2016 15:34


Discipline Tags:

Physics Physical Chemistry Computing & software technologies Information & Communication Technologies Chemistry

Technical Tags:

Diffraction Single Crystal X-ray Diffraction (SXRD)