Allman, M.
(2014),
Tunable resonant and nonresonant interactions between a phase qubit and LC resonator, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.112.123601
(Accessed December 5, 2024)
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Tunable resonant and nonresonant interactions between a phase qubit and LC resonator
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Abstract
We use a flux-biased radio frequency superconducting quantum interference device (rf SQUID) with an embedded flux-biased direct current SQUID to generate strong resonant and nonresonant tunable interactions between a phase qubit and a lumped-element resonator. The rf SQUID creates a tunable magnetic susceptibility between the qubit and resonator providing resonant coupling strengths from zero to near the ultrastrong coupling regime. By modulating the magnetic susceptibility, nonresonant parametric coupling achieves rates >100 MHz. Nonlinearity of the magnetic susceptibility also leads to parametric coupling at the subharmonics of the qubit-resonator detuning.Citation
Physical Review Letters
Volume
112
Issue
12
Pub Type
Journals
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Created March 26, 2014, Updated November 10, 2018