eprintid: 704720
rev_number: 41
eprint_status: archive
userid: 608
dir: disk0/00/70/47/20
datestamp: 2011-01-20 16:08:42
lastmod: 2021-09-19 23:05:51
status_changed: 2011-01-20 16:08:42
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Perets, HB
creators_name: Lahini, Y
creators_name: Pozzi, F
creators_name: Sorel, M
creators_name: Morandotti, R
creators_name: Silberberg, Y
title: Realization of quantum walks with negligible decoherence in waveguide lattices
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
keywords: PHOTONIC LATTICES, LOCALIZATION, DIFFUSION, SOLITONS
note: © 2008 The American Physical Society
abstract: Quantum random walks are the quantum counterpart of classical random walks, and were recently studied in the context of quantum computation. Physical implementations of quantum walks have only been made in very small scale systems severely limited by decoherence. Here we show that the propagation of photons in waveguide lattices, which have been studied extensively in recent years, are essentially an implementation of quantum walks. Since waveguide lattices are easily constructed at large scales and display negligible decoherence, they can serve as an ideal and versatile experimental playground for the study of quantum walks and quantum algorithms. We experimentally observe quantum walks in large systems (similar to 100 sites) and confirm quantum walks effects which were studied theoretically, including ballistic propagation, disorder, and boundary related effects.
date: 2008-05-02
publisher: AMER PHYSICAL SOC
official_url: http://dx.doi.org/10.1103/PhysRevLett.100.170506
vfaculties: VENG
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_batch
elements_source: Web of Science
elements_id: 193158
doi: 10.1103/PhysRevLett.100.170506
language_elements: EN
lyricists_name: Pozzi, Francesca
lyricists_id: FPOZZ63
full_text_status: public
publication: PHYS REV LETT
volume: 100
number: 17
article_number: 170506
issn: 0031-9007
citation:        Perets, HB;    Lahini, Y;    Pozzi, F;    Sorel, M;    Morandotti, R;    Silberberg, Y;      (2008)    Realization of quantum walks with negligible decoherence in waveguide lattices.                   PHYS REV LETT , 100  (17)    , Article 170506.  10.1103/PhysRevLett.100.170506 <https://doi.org/10.1103/PhysRevLett.100.170506>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/704720/1/704720.pdf