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Article Dans Une Revue Physical Review Letters Année : 2008

Strong tunable coupling between a superconducting charge and phase qubit

Résumé

We have realized a tunable coupling over a large frequency range between an asymmetric Cooper pair transistor (charge qubit) and a dc SQUID (phase qubit). Our circuit enables the independent manipulation of the quantum states of each qubit as well as their entanglement. The measurements of the charge qubit's quantum states is performed by resonant read-out via the measurement of the quantum states of the SQUID. The measured coupling strength is in agreement with an analytic theory including a capacitive and a tunable Josephson coupling between the two qubits.
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Dates et versions

hal-00201099 , version 1 (23-12-2007)

Identifiants

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Aurélien Fay, Emile Hoskinson, Florent Lecocq, Laurent Lévy, Frank. W. J. Hekking, et al.. Strong tunable coupling between a superconducting charge and phase qubit. Physical Review Letters, 2008, 100, pp.187003. ⟨10.1103/PhysRevLett.100.187003⟩. ⟨hal-00201099⟩
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