@inproceedings{e54b8bc5a16d4c27aafa98bb6821cbb1,

title = "Fast tuning of superconducting microwave cavities",

abstract = "Photons are fundamental excitations of electromagnetic fields and can be captured in cavities. For a given cavity with a certain size, the fundamental mode has a fixed frequency f which gives the photons a specific {"}color.{"} The cavity also has a typical lifetime τ, which results in a finite linewidth δf. If the size of the cavity is changed fast compared to τ, and so that the frequency change Δf 蠑δf, then it is possible to change the {"}color{"} of the captured photons. Here we demonstrate superconducting microwave cavities, with tunable effective lengths. The tuning is obtained by varying a Josephson inductance at one end of the cavity. We show data on four different samples and demonstrate tuning by several hundred linewidths in a time Δt 蠐 τ. Working in the few photon limit, we show that photons stored in the cavity at one frequency will leak out from the cavity with the new frequency after the detuning. The characteristics of the measured devices make them suitable for different applications such as dynamic coupling of qubits and parametric amplification.",

keywords = "Qubit coupling, Squid, Superconducting cavity, Tunable resonator",

author = "M. Sandberg and Wilson, {C. M.} and F. Persson and G. Johansson and V. Shumeiko and T. Bauch and T. Duty and P. Delsing",

note = "Publisher Copyright: {\textcopyright} 2008 American Institute of Physics.; 2nd International Workshop on Solid-State Quantum Computing, IWSSQC 2008 and Mini-School on Quantum Information Science, QIS 2008 ; Conference date: 23-06-2008 Through 27-06-2008",

year = "2008",

doi = "10.1063/1.3037127",

language = "אנגלית",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

pages = "12--21",

editor = "Hsi-Sheng Goan and Yueh-Nan Chen",

booktitle = "Solid-State Quantum Computing - Proceedings of the 2nd International Workshop on Solid-State Quantum Computing, IWSSQC 2008 and Mini-School on Quantum Information Science, QIS 2008",

}