Breakdown of the Cross-Kerr Scheme for Photon Counting
Artikel i vetenskaplig tidskrift, 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
Författare
B. X. Fan
Anton Frisk Kockum
Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik
J. Combes
Göran Johansson
Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik
Io Chun Hoi
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
Christopher Wilson
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
Per Delsing
Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik
G. J. Milburn
T. M. Stace
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 110 5Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)
Europeiska kommissionen (FP7), 2012-04-01 -- 2015-03-31.
Solid State Systems for Quantum Information Processing
Europeiska kommissionen (FP7), 2010-02-01 -- 2013-09-30.
Ämneskategorier
Fysik
DOI
10.1103/PhysRevLett.110.053601