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- 053601Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)
European Commission (EC) (EC/FP7/284566), 2012-04-01 -- 2015-03-31.
Solid State Systems for Quantum Information Processing
European Commission (EC) (EC/FP7/248629), 2010-02-01 -- 2013-09-30.
Areas of Advance
Nanoscience and Nanotechnology
Subject Categories
Physical Sciences
Atom and Molecular Physics and Optics
DOI
10.1103/PhysRevLett.111.053601