A Caltech Library Service

Conditional control of the quantum states of remote atomic memories for quantum networking

Felinto, D. and Chou, C. W. and Laurat, J. and Schomburg, E. W. and de Riedmatten, H. and Kimble, H. J. (2006) Conditional control of the quantum states of remote atomic memories for quantum networking. Nature Physics, 2 (12). pp. 844-848. ISSN 1745-2473. doi:10.1038/nphys450.

[img] PDF - Submitted Version
See Usage Policy.

[img] PDF - Supplemental Material
See Usage Policy.


Use this Persistent URL to link to this item:


Quantum networks hold the promise for revolutionary advances in information processing with quantum resources distributed over remote locations via quantum-repeater architectures. Quantum networks are composed of nodes for storing and processing quantum states, and of channels for transmitting states between them. The scalability of such networks relies critically on the ability to carry out conditional operations on states stored in separated quantum memories. Here, we report the first implementation of such conditional control of two atomic memories, located in distinct apparatuses, which results in a 28-fold increase of the probability of simultaneously obtaining a pair of single photons, relative to the case without conditional control. As a first application, we demonstrate a high degree of indistinguishability for remotely generated single photons by the observation of destructive interference of their wave packets. Our results demonstrate experimentally a basic principle for enabling scalable quantum networks, with applications also to linear optics quantum computation.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access ItemSupplementary Information Paper
Additional Information:© 2006 Nature Publishing Group. Received 1 August 2006; accepted 9 October 2006; published 29 October 2006. This research is supported by the Disruptive Technologies Office (DTO) and by the National Science Foundation. J.L. acknowledges financial support from the European Union (Marie Curie fellowship). D.F. acknowledges financial support by CNPq (Brazilian agency). Correspondence and requests for materials should be addressed to H.J.K. Supplementary Information accompanies this paper on
Funding AgencyGrant Number
Disruptive Technologies Office (DTO)UNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20150409-081810350
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56505
Deposited By: Ruth Sustaita
Deposited On:09 Apr 2015 18:32
Last Modified:10 Nov 2021 21:00

Repository Staff Only: item control page