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|Abstract:||We demonstrate quantum control and entanglement generation using a Landau-Zener beam splitter formed by coupling two transmon qubits to a superconducting cavity. Single passage through the cavity-mediated qubit-qubit avoided crossing provides a direct test of the Landau-Zener transition formula. Consecutive sweeps result in Landau-Zener-Stuckelberg interference patterns, with a visibility that can be sensitively tuned by adjusting the level velocity through both the nonadiabatic and adiabatic regimes. Two-qubit state tomography indicates that a Bell state can be generated via a single passage, with a fidelity of 78% limited by qubit relaxation. DOI: 10.1103/PhysRevLett.110.173603|
|Electronic Publication Date:||26-Apr-2013|
|Citation:||Quintana, CM, Petersson, KD, McFaul, LW, Srinivasan, SJ, Houck, AA, Petta, JR. (2013). Cavity-Mediated Entanglement Generation Via Landau-Zener Interferometry. PHYSICAL REVIEW LETTERS, 110 (10.1103/PhysRevLett.110.173603|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||PHYSICAL REVIEW LETTERS|
|Version:||Final published version. Article is made available in OAR by the publisher's permission or policy.|
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