Broadband filters for abatement of spontaneous emission in circuit quantum electrodynamics

Nicholas T. Bronn; Yanbing Liu; Jared B. Hertzberg; Antonio D. Córcoles; Andrew A. Houck; Jay M. Gambetta; Jerry M. Chow

doi:10.1063/1.4934867

Broadband filters for abatement of spontaneous emission in circuit quantum electrodynamics

Nicholas T. Bronn, Yanbing Liu, Jared B. Hertzberg, Antonio D. Córcoles, Andrew A. Houck, Jay M. Gambetta, Jerry M. Chow

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

The ability to perform fast, high-fidelity readout of quantum bits (qubits) is essential to the goal of building a quantum computer. However, coupling a fast measurement channel to a superconducting qubit typically also speeds up its relaxation via spontaneous emission. Here, we use impedance engineering to design a filter by which photons may easily leave the resonator at the cavity frequency but not at the qubit frequency. We implement this broadband filter in both an on-chip and off-chip configuration.

Original language	English (US)
Article number	172601
Journal	Applied Physics Letters
Volume	107
Issue number	17
DOIs	https://doi.org/10.1063/1.4934867
State	Published - Oct 26 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4934867

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AU - Liu, Yanbing

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AU - Houck, Andrew A.

AU - Gambetta, Jay M.

AU - Chow, Jerry M.

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Broadband filters for abatement of spontaneous emission in circuit quantum electrodynamics

Abstract

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