Giant Cross–Kerr Effect for Propagating Microwaves Induced by an Artificial Atom
Journal article, 2013

We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross–Kerr coupling. We demonstrate average cross–Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.

Author

Io Chun Hoi

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Anton Frisk Kockum

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Tauno Palomaki

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Thomas M. Stace

Bixuan Fan

Lars Tornberg

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Sankar Raman Sathyamoorthy

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Per Delsing

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Christopher Wilson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 111 5 article nr. 053601-

Solid State Systems for Quantum Information Processing

European Commission (FP7), 2010-02-01 -- 2013-09-30.

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

European Commission (FP7), 2012-04-01 -- 2015-03-31.

Areas of Advance

Nanoscience and Nanotechnology

Subject Categories

Physical Sciences

Atom and Molecular Physics and Optics

DOI

10.1103/PhysRevLett.111.053601

More information

Created

10/6/2017