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.
Switchable Interaction in Molecular Double Qubits / Ferrando Soria, Jesús; Magee, Samantha A.; Chiesa, Alessandro; Carretta, Stefano; Santini, Paolo; Vitorica Yrezabal, Iñigo J.; Tuna, Floriana; Whitehead, George F. S.; Sproules, Stephen; Lancaster, Kyle M.; Barra, Anne Laure; Timco, Grigore A.; Mcinnes, Eric J. L.; Winpenny, Richard E. P.. - In: CHEM. - ISSN 2451-9308. - 1:5(2016), pp. 727-752. [10.1016/j.chempr.2016.10.001]
Switchable Interaction in Molecular Double Qubits
CHIESA, Alessandro;CARRETTA, Stefano;SANTINI, Paolo;
2016-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
