Breakdown of the Cross-Kerr Scheme for Photon Counting
Journal article, 2013

We show, in the context of single-photon detection, that an atomic three-level model for a transmon in a transmission line does not support the predictions of the nonlinear polarizability model known as the cross-Kerr effect. We show that the induced displacement of a probe in the presence or absence of a single photon in the signal field, cannot be resolved above the quantum noise in the probe. This strongly suggests that cross-Kerr media are not suitable for photon counting or related single-photon applications. Our results are presented in the context of a transmon in a one-dimensional microwave waveguide, but the conclusions also apply to optical systems.

circuit

computation

fluorescence

state

atom

quantum fluctuations

optical bistability

Author

B. X. Fan

Anton Frisk Kockum

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

J. Combes

Göran Johansson

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

Io Chun Hoi

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

Christopher Wilson

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

Per Delsing

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

G. J. Milburn

T. M. Stace

Physical Review Letters

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

Vol. 110 5

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

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

Solid State Systems for Quantum Information Processing

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

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevLett.110.053601

More information

Created

10/6/2017