Development of a broadband reflective T-filter for voltage biasing high-Q superconducting microwave cavities

2014/09/26 by Yu Hao, Francisco Rouxinol, M. D. LaHaye · 14 citations
Computer Science · Physics and Astronomy · #Advanced Frequency and Time Standards #Biasing #Broadband #Coplanar waveguide #Filter (signal processing) #Mechanical and Optical Resonators #Microwave #Quality (philosophy) #Quantum Information and Cryptography #Superconductivity #Voltage #Waveguide #cond-mat.mes-hall #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1063/1.4903777

published in Applied Physics Letters 105(22), 222603 (American Institute of Physics) · 4 pages, 4 figures

arxiv created 2014/09/26 · openalex publication_date 2014/12/01 · arxiv updated 2015/04/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present the design of a reflective stop-band filter based on quasi-lumped elements that can be utilized to introduce large dc and low-frequency voltage biases into a low-loss superconducting coplanar waveguide (CPW) cavity. Transmission measurements of the filter are seen to be in good agreement with simulations and demonstrate insertion losses greater than 20 \rm dB in the range of \rm 3 to 10 GHz. Moreover, transmission measurements of the CPW's fundamental mode demonstrate that loaded quality factors exceeding 10⁵ can be achieved with this design for dc voltages as large as \rm 20 V and for the cavity operated in the single-photon regime. This makes the design suitable for use in a number of applications including qubit-coupled mechanical systems and circuit QED.

Citations

• Quantum ground state and single-phonon control of a mechanical resonator
• Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
• Using a qubit to measure photon-number statistics of a driven thermal oscillator
• Probing the quantum coherence of a nanomechanical resonator using a superconducting qubit: II. Implementation
• Circuit quantum electrodynamics with a spin qubit
• Quantum measurement of a coupled nanomechanical resonator–Cooper-pair box system

Cited by

• Current and magnetic field dependences of a superconducting coplanar waveguide resonator
• Room temperature cavity electromechanics in the sideband-resolved regime

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