Mach-Zehnder Interferometry in a Strongly Driven Superconducting Qubit

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dc.creatorOliver, William D.
dc.creatorYu, Yang
dc.creatorLee, Janice C.
dc.creatorBerggren, Karl K.
dc.creatorLevitov, Leonid S.
dc.creatorOrlando, Terry P.
dc.date2005-12-29
dc.date.accessioned2026-07-07T06:53:44Z
dc.date.available2026-07-07T06:53:44Z
dc.descriptionWe demonstrate Mach-Zehnder-type interferometry in a superconducting flux qubit. The qubit is a tunable artificial atom, whose ground and excited states exhibit an avoided crossing. Strongly driving the qubit with harmonic excitation sweeps it through the avoided crossing two times per period. As the induced Landau-Zener transitions act as coherent beamsplitters, the accumulated phase between transitions, which varies with microwave amplitude, results in quantum interference fringes for n=1...20 photon transitions. The generalization of optical Mach-Zehnder interferometry, performed in qubit phase space, provides an alternative means to manipulate and characterize the qubit in the strongly-driven regime.
dc.description14 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0512691
dc.identifierhttp://arxiv.org/abs/cond-mat/0512691
dc.identifierScience Vol. 310, Issue 5754, pp. 1653-1657 (2005). Published online 10 November 2005
dc.identifierdoi:10.1126/science.1119678
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105693
dc.subjectSuperconductivity
dc.titleMach-Zehnder Interferometry in a Strongly Driven Superconducting Qubit
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