Photon indistinguishability measurements under pulsed and continuous
excitation
excitation
File(s)
Working paper
Author(s)
Type
Working Paper
Abstract
The indistinguishability of successively generated photons from a single
quantum emitter is most commonly measured using two-photon interference at a
beam splitter. Whilst for sources excited in the pulsed regime the measured
bunching of photons reflects the full wavepacket indistinguishability of the
emitted photons, for continuous wave (cw) excitation the inevitable dependence
on detector timing resolution and driving strength obscures the underlying
photon interference process. Here we derive a method to extract the photon
indistinguishability from cw measurements by considering the relevant
correlation functions. The equivalence of both methods is experimentally
verified through comparison of cw and pulsed excitation of an archetypal source
of photons, a single molecule.
quantum emitter is most commonly measured using two-photon interference at a
beam splitter. Whilst for sources excited in the pulsed regime the measured
bunching of photons reflects the full wavepacket indistinguishability of the
emitted photons, for continuous wave (cw) excitation the inevitable dependence
on detector timing resolution and driving strength obscures the underlying
photon interference process. Here we derive a method to extract the photon
indistinguishability from cw measurements by considering the relevant
correlation functions. The equivalence of both methods is experimentally
verified through comparison of cw and pulsed excitation of an archetypal source
of photons, a single molecule.
Date Issued
2021-07-20
Citation
2021
Publisher
arXiv
Copyright Statement
© 2021 The Author(s). This work is published under CC BY 4.0 international licence.
License URL
Sponsor
The Royal Society
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://arxiv.org/abs/2107.09434v1
Grant Number
UF160475
EP/R044031/1
Subjects
quant-ph
quant-ph
Notes
6 page paper, 11 page supplement. Comments welcome
Publication Status
Published