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Title: Broadband sample holder for microwave spectroscopy of superconducting qubits

We present a practical design and implementation of a broadband sample holder suitable for microwave experiments with superconducting integrated circuits at millikelvin temperatures. Proposed design can be easily integrated in standard dilution cryostats, has flat pass band response in a frequency range from 0 to 32 GHz, allowing the RF testing of the samples with substrate size up to 4 × 4 mm{sup 2}. The parasitic higher modes interference in the holder structure is analyzed and prevented via design considerations. The developed setup can be used for characterization of superconducting parametric amplifiers, bolometers, and qubits. We tested the designed sample holder by characterizing of a superconducting flux qubit at 20 mK temperature.
Authors:
; ; ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [2] ;  [6]
  1. National University of Science and Technology (MISIS), Leninskiy prosp. 4, Moscow, 119049 (Russian Federation)
  2. (RQC), 100 Novaya St., Skolkovo, Moscow region, 143025 (Russian Federation)
  3. Leibniz Institute of Photonic Technology (IPHT), PO Box 100239, D-07702 Jena (Germany)
  4. Russian Quantum Center (RQC), 100 Novaya St., Skolkovo, Moscow region, 143025 (Russian Federation)
  5. (IPHT), PO Box 100239, D-07702 Jena (Germany)
  6. (KIT), D-76131 Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
22305903
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BOLOMETERS; CRYOSTATS; DILUTION; GHZ RANGE; INTEGRATED CIRCUITS; MICROWAVE RADIATION; PARAMETRIC AMPLIFIERS; QUBITS; SAMPLE HOLDERS; SPECTROSCOPY; SUPERCONDUCTIVITY; TEMPERATURE RANGE 0013-0065 K