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
fluorescence
optical bistability
atom
quantum fluctuations
computation
state
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 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.
Subject Categories
Physical Sciences
DOI
10.1103/PhysRevLett.110.053601