Controlling Atom-Photon Bound States in an Array of Josephson-Junction Resonators
Journal article, 2022
Engineering the electromagnetic environment of a quantum emitter gives rise to a plethora of exotic light -matter interactions. In particular, photonic lattices can seed long-lived atom-photon bound states inside photonic band gaps. Here, we report on the concept and implementation of a novel microwave architecture consisting of an array of compact superconducting resonators in which we have embedded two frequency -tunable artificial atoms. We study the atom-field interaction and access previously unexplored coupling regimes, in both the single-and double-excitation subspace. In addition, we demonstrate coherent interactions between two atom-photon bound states, in both resonant and dispersive regimes, that are suitable for the implementation of SWAP and CZ two-qubit gates. The presented architecture holds promise for quantum simulation with tunable-range interactions and photon transport experiments in the nonlinear regime.
Author
Marco Scigliuzzo
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Giuseppe Calajo
Barcelona Institute of Science and Technology (BIST)
Francesco Ciccarello
National Research Council of Italy (CNR)
University of Palermo
Daniel Perez Lozano
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Andreas Bengtsson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Pasquale Scarlino
Swiss Federal Institute of Technology in Lausanne (EPFL)
Andreas Wallraff
Swiss Federal Institute of Technology in Zürich (ETH)
Darrick Chang
Catalan Institution for Research and Advanced Studies
Barcelona Institute of Science and Technology (BIST)
Per Delsing
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Simone Gasparinetti
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Physical Review X
21603308 (eISSN)
Vol. 12 3 031036Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
Condensed Matter Physics
DOI
10.1103/PhysRevX.12.031036