Abstract
Recently a conditional quantum teleportation protocol has been proposed by Chen et al. [New J. Phys. 7, 172 (2005)] , which is based on the collective spontaneous emission of a photon from a pair of quantum dots. We formulate a similar protocol for collective emission from a pair of atoms, one of which is entangled with a single mode of an optical cavity. We focus on the performance of the protocol as characterized by the fidelity of the teleported state and the overall success probability. We consider a strategy employing spatially resolved photodetection of the emitted photon in order to distinguish superradiant from subradiant emission on the basis of a single detected photon. We find that fidelity approaches unity as the spacing of the atoms becomes much smaller than the emission wavelength with a success probability of 0.25. The fidelity remains above the classical limit of for arbitrary atomic separations with the ultimate limit of performance coming from the spatial resolution of the detectors.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Richard Wagner and James P. Clemens
J. Opt. Soc. Am. B 27(6) A73-A80 (2010)
Sergey A. Podoshvedov
J. Opt. Soc. Am. B 35(4) 861-877 (2018)
K. El Anouz, A. El Allati, and M. El Baz
J. Opt. Soc. Am. B 37(1) 38-47 (2020)