Centre for Nanoscience
and Nanotechnology

  • CNRS
  • UPSaclay
  • UParis

PHYNANO Group

Next Seminar 

Dynamically enhancing qubit-photon interactions with anti-squeezing

Tuesday January 17th 2023, 15h – A003

Invited speaker:

Zaki Leghtas

(Mines Paris and LPENS)

The interaction strength of an oscillator to a qubit grows with the oscillator's vacuum field fluctuations. The well known degenerate parametric oscillator has revived interest in the regime of strongly detuned squeezing, where its eigenstates are squeezed Fock states. Owing to these amplified field fluctuations, it was recently proposed that squeezing this oscillator would dynamically boost qubit-photon interactions. In a superconducting circuit experiment, we observe a two-fold increase in the dispersive interaction between a qubit and an oscillator at 5.5 dB of squeezing, demonstrating in-situ dynamical control of qubit-photon interactions. This work initiates the experimental coupling of oscillators of squeezed photons to qubits, and cautiously motivates their dissemination in experimental platforms seeking enhanced interactions.

Upcoming seminars

  • Mark Goerbig (14/02/2023) 
  • Landry Bretheau (07/03/2023)
  • Emmanuel Baudin (14/03/2023)
  • Wilfrid Poirier (11/04/2023)
  • Mathieu Jeannin (09/05/2023)
  • Marco Aprili (06/06/2023)
  • Gerbold Menard (21/03/2023)
  • Christina Psaroudaki (04/07/2023)
  • Charis Quay (TBA)

Past seminars

  • Mario Amado (University of Salamanca)

  • Werner Wegscheider (ETH-Zurich)

  • Danijela Marcovic (UMR-Thales)

  • Mathieu Delbecq (LPENS)

  • Jorge Vallejo-Bustamante (LPS)

  • Liam Farrar (University of St. Andrews)

  • Christophe Mora (Universite de Paris)

  • Francois Parmentier (SPEC)

  • Herve Aubin (C2N)

  • Michael Manfra (Purdue University)

  • Banan Kerdi (LNCMI-Toulouse)

  • Abhishek Juyal (Neel Institute)

  • Arthur Marguerite (College de France)

  • Kamran Behnia (ESPCI)

  • Pierre Capiod (Debye institute for Nanomaterials)

  • Audrey Bienfait (ENS-Lyon)

  • Sebastien Toussain (UCL)

  • David Goldhaber-Gordon (Stanford)

  • Javad Shabani (NYU)

  • Olivier Maillet (Aalto)

  • Mitali Banerjee (EPFL)

  • Anais Dreau (L2C) 

  • Klaus Ensslin (ETH- Zurich) 

  • Xavier Waintal (CEA- Grenoble) 

  • Gwendal Feve (LPENS) 

  • Shuoying Yang (MPI-Halle) 

  • Yann Gallais (MPQ) 

  • Carles Altimiras (CEA - Saclay)

  • Alexandra Palacio- Morales ( LPS) 

  • Everton Arrighi (Neel Institute)