Flux-Pumped Symmetrically Threaded SQUID Josephson Parametric Amplifier
ORAL
Abstract
Josephson parametric amplifiers (JPA) have many useful applications in superconducting qubit measurements and quantum feedback. Ideally, JPA's are supposed to perform as perfect quantum amplifiers. However, in practice their performance is limited by higher-order corrections such as Kerr nonlinearity. In our work, we design a flux-pumped symmetrically threaded SQUID (STS) JPA which allows us to eliminate the Kerr nonlinearity from the Hamiltonian. We find that this setup can yield a gain closer to the ideal Degenerate Parametric Amplifier gain compared to SQUID based flux-pumped JPA. We also investigate quadrature mixing as well as noise properties of the Kerr free amplifier.
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Presenters
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KAGAN YANIK
University of Rochester, University of Rochester, Chapman University
Authors
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KAGAN YANIK
University of Rochester, University of Rochester, Chapman University
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Irwin Huang
University of Rochester
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Bibek Bhandari
Chapman University
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AHMED HAJR
University of California, Berkeley
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Bingcheng Qing
University of California, Berkeley
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Ke Wang
University of California, Berkeley
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Justin Dressel
Chapman University
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Irfan Siddiqi
University of California, Berkeley
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Andrew N Jordan
Chapman University