skip to main content

SciTech ConnectSciTech Connect

Title: Fast, low-power manipulation of spin ensembles in superconducting microresonators

We demonstrate the use of high-Q superconducting coplanar waveguide (CPW) microresonators to perform rapid manipulations on a randomly distributed spin ensemble using very low microwave power (400 nW). This power is compatible with dilution refrigerators, making microwave manipulation of spin ensembles feasible for quantum computing applications. We also describe the use of adiabatic microwave pulses to overcome microwave magnetic field (B{sub 1}) inhomogeneities inherent to CPW resonators. This allows for uniform control over a randomly distributed spin ensemble. Sensitivity data are reported showing a single shot (no signal averaging) sensitivity to 10{sup 7} spins or 3×10{sup 4}spins/√(Hz) with averaging.
Authors:
; ; ; ;  [1] ; ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
  2. Institut für Kristallzüchtung, D-12489 Berlin (Germany)
  3. Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig (Germany)
  4. VITCON Projectconsult GMBH, D-07745 Jena (Germany)
  5. Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6 (Canada)
  6. School of Fundamental Science and Technology, Keio University, Yokohama, Kanagawa 2238522 (Japan)
  7. London Centre for Nanotechnology, University College London, London WC1H 0AH (United Kingdom)
  8. Department of Physics and James Franck Institute, University of Chicago, Chicago, Illinois 60637 (United States)
Publication Date:
OSTI Identifier:
22300083
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 22; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DILUTION; MAGNETIC FIELDS; MICROSTRUCTURE; MICROWAVE RADIATION; PULSES; QUANTUM COMPUTERS; RANDOMNESS; RESONATORS; SENSITIVITY; SPIN; SUPERCONDUCTING DEVICES; WAVEGUIDES