Experimental proposal of switched "delayed-choice" for entanglement swapping

Author(s)
Thomas Jennewein, Caslav Brukner, Markus Aspelmeyer, Anton Zeilinger
Abstract

Entanglement swapping is a fascinating generalization of quantum teleportation, where the entanglement between pairs is interchanged leading to entanglement between particles that never interacted. Extending the idea of Peres, we propose an experimental setup where the choice which quantum systems are finally entangled is made at a time after they have been registered and do not even exist anymore. Our proposed setup can be used in Third-Man Quantum Cryptography wherea third party can control whether Alice and Bob are able to communicate secretly, but he does know their secret key. ΠWorld Scientific Publishing Company.

Organisation(s)
Journal
International Journal of Quantum Information (IJQI)
Volume
3
Pages
73-79
No. of pages
7
ISSN
0219-7499
DOI
https://doi.org/10.1142/S0219749905000505
Publication date
2005
Peer reviewed
Yes
Austrian Fields of Science 2012
103026 Quantum optics
Portal url
https://ucris.univie.ac.at/portal/en/publications/experimental-proposal-of-switched-delayedchoice-for-entanglement-swapping(853edf7f-38f2-47d6-83d9-9e65642d8648).html