Reduced visibility of Rabi oscillations in superconducting qubits

Meier, F. and Loss, D.. (2005) Reduced visibility of Rabi oscillations in superconducting qubits. Physical Review B, Vol. 71, H. 9 , 094519.

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Official URL: http://edoc.unibas.ch/dok/A5254667

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Coherent Rabi oscillations between quantum states of superconducting microcircuits have been observed in a number of experiments, albeit with a visibility that is typically much smaller than unity. Here, we show theoretically that the coherent coupling of superconducting phase qubits to background charge fluctuators [R. W. Simmonds et al., Phys. Rev. Lett., 93, 77003 (2004)] leads to a significantly reduced visibility if the Rabi frequency is comparable to the coupling energy of microcircuit and fluctuator. For larger Rabi frequencies, transitions to the second excited state of the superconducting microcircuit become dominant in suppressing the Rabi oscillation visibility.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:44

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