Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/119466
Title: Narrowband Photon Pairs From A Cold Atomic Vapour For Interfacing With A Single Atom
Authors: GURPREET KAUR GULATI
Keywords: photon pair source, narrowbandwidth, Hong-Ou-Mandel interference
Issue Date: 15-Dec-2014
Source: GURPREET KAUR GULATI (2014-12-15). Narrowband Photon Pairs From A Cold Atomic Vapour For Interfacing With A Single Atom. ScholarBank@NUS Repository.
Abstract: We present a narrowband and a bright source of time correlated photon pairs based on a cold cloud of 87Rb atoms via a non-degenerate fourwave mixing process. The bandwidth of the generated photons can be tuned from 10 MHz?30 MHz by changing the optical density of the atomic cloud. The violation of the Cauchy-Schwarz inequality by a factor of 50?10^6 strong non-classical correlation between the generated fields with a maximum instantaneous pair detection rate of 20,000 pairs/s. The generated photon pairs are entangled in the polarisation degree of freedom. The bandwidth and wavelength of the generated photons are suitable to interface with 87Rb atoms, a common workhorse for quantum memories. As a first step towards interfacing, we have performed a Hong-Ou-Mandel interference experiment between a single photon from a single 87Rb atom and a heralded single photon from our source. The experiment demonstrates indistinguishability of single photons generated from two different physical systems which is an important step towards establishing quantum networks.
URI: http://scholarbank.nus.edu.sg/handle/10635/119466
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Gulati_GK.pdf14.55 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

179
checked on Apr 19, 2018

Download(s)

313
checked on Apr 19, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.