Non post-selected indistinguishable single photons generated by a quantum dot under resonant excitation

We report on two-photon interferences from highly indistinguishable single photons emitted by a quantum dot. Stricly resonant excitation with picosecond laser pulses allows coherent state preparation with a signifi- cantly increased coherence time (T2 \sim 1 ns) and reduced lifetime (T1 \sim 650 ps)...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2014-03
Main Authors: Monniello, Léonard, Reigue, Antoine, Hostein, Richard, Lemaitre, Aristide, Martinez, Anthony, Grousson, Roger, Voliotis, Valia
Format: Article
Language:English
Subjects:
Excitation
Photons
Quantum dots
Variations
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report on two-photon interferences from highly indistinguishable single photons emitted by a quantum dot. Stricly resonant excitation with picosecond laser pulses allows coherent state preparation with a signifi- cantly increased coherence time (T2 \sim 1 ns) and reduced lifetime (T1 \sim 650 ps), as compared to a non-resonant excitation scheme. Building-up the Hong-Ou-Mandel dip without post-selection of the interfering photons, visi- bilities greater than 70 % have been observed. Near-unity indistinguishable photons could be achieved for every dot if charge noise is controlled. Indeed, the remaining decoherence mechanism is likely due to the fluctuating electrostatic environment of the dots.
ISSN:2331-8422
DOI:10.48550/arxiv.1403.8001