Nonlocal dispersion cancellation using entangled photons

Author

Baek, So-Young ; Cho, Young-Wook ; Kim, Yoon-Ho

Author_Institution

Dept. of Phys., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea

fYear

2011

fDate

18-20 July 2011

Firstpage

35

Lastpage

36

Abstract

A pair of optical pulses traveling through two dispersive media will become broadened and, as a result, the degree of coincidence between the optical pulses will be reduced. For a pair of entangled photons, however, nonlocal dispersion cancellation in which the dispersion experienced by one photon cancels the dispersion experienced by the other photon is possible. In this paper, we report an experimental demonstration of nonlocal dispersion cancellation using entangled photons. The degree of two-photon coincidence is shown to increase beyond the limit attainable without entanglement. Our results have important applications in fiber-based quantum communication and quantum metrology.

Keywords

optical communication; quantum communication; quantum entanglement; quantum optics; two-photon processes; dispersive media; entangled photons; fiber-based quantum communication; nonlocal dispersion cancellation; optical pulses; quantum metrology; two-photon coincidence; Crystals; Dispersion; Gratings; Histograms; Laser excitation; Media; Photonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Society Summer Topical Meeting Series, 2011 IEEE

Conference_Location

Montreal, QC

ISSN

Pending

Print_ISBN

978-1-4244-5730-4

Type

conf

DOI

10.1109/PHOSST.2011.6000031

Filename

6000031