Quantum Phase Tomography of a Strongly Driven Qubit

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dc.creatorRudner, M. S.
dc.creatorShytov, A. V.
dc.creatorLevitov, L. S.
dc.creatorBerns, D. M.
dc.creatorOliver, W. D.
dc.creatorValenzuela, S. O.
dc.creatorOrlando, T. P.
dc.date2008-05-12
dc.date.accessioned2026-07-07T10:16:12Z
dc.date.available2026-07-07T10:16:12Z
dc.descriptionThe interference between repeated Landau-Zener transitions in a qubit swept through an avoided level crossing results in Stueckelberg oscillations in qubit magnetization. The resulting oscillatory patterns are a hallmark of the coherent strongly-driven regime in qubits, quantum dots and other two-level systems. The two-dimensional Fourier transforms of these patterns are found to exhibit a family of one-dimensional curves in Fourier space, in agreement with recent observations in a superconducting qubit. We interpret these images in terms of time evolution of the quantum phase of qubit state and show that they can be used to probe dephasing mechanisms in the qubit.
dc.description5 pgs, 4 fgs
dc.identifierhttps://arxiv.org/abs/0805.1555
dc.identifierhttp://arxiv.org/abs/0805.1555
dc.identifierPhys. Rev. Lett. 101, 190502 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.190502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173425
dc.subjectMesoscale and Nanoscale Physics
dc.subjectSuperconductivity
dc.titleQuantum Phase Tomography of a Strongly Driven Qubit
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