Premium
On the Possibility of Quantum Computation Based on Photon Exchange Interactions
Author(s) -
Opatrný T.,
Kurizki G.
Publication year - 2000
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/1521-3978(200009)48:9/11<1125::aid-prop1125>3.0.co;2-1
Subject(s) - photon , physics , quantum computer , computation , quantum mechanics , quantum , computer science , algorithm
We examine several proposed schemes by Franson et al. for quantum logic gates based on non‐local exchange interactions between two photons in a medium. In these schemes the presence of a single photon in a given mode is supposed to induce a large phase shift on another photon propagating in the same medium. We conclude that the schemes proposed so far are not able to produce the required conditional phase shift, even though the proposals contain many stimulating and intriguing ideas.