RFSQUID-Mediated Coherent Tunable Coupling Between a Superconducting Phase Qubit and a Lumped Element Resonator

Abstract

We demonstrate coherent tunable coupling between a superconducting phase qubit and a lumped element resonator. The coupling strength is mediated by a flux-biased RF SQUID operated in the nonhysteretic regime. By tuning the applied flux bias to the RF SQUID we change the effective mutual inductance, and thus the coupling energy, between the phase qubit and resonator. We verify the modulation of coupling strength from 0 to 100 MHz by observing modulation in the size of the splitting in the phase qubit's spectroscopy, as well as coherently by observing modulation in the vacuum Rabi oscillation frequency when on resonance. The measured spectroscopic splittings and vacuum Rabi oscillations agree well with theoretical predictions.

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Document Details

Document Type
Technical Report
Publication Date
Feb 02, 2010
Accession Number
ADA519412

Entities

People

  • Adam Sirois
  • Dapeng Li
  • F. Altomare
  • J. D. Whittaker
  • John Teufel
  • Joshua Strong
  • K. Cicak
  • Michael S. Allman
  • R. W. Simmonds

Organizations

  • National Institute of Standards and Technology

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Couplings
  • Energy Levels
  • Equations
  • Frequency
  • Ground State
  • Inductance
  • Information Processing
  • Instructions
  • Measurement
  • Metastable State
  • Quantum Information
  • Resonance
  • Resonant Frequency
  • Resonators
  • Technology Transfer
  • Time Domain

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Quantum Science - Quantum Dots