Maximally entangled and GHz-clocked on-demand photon pair source
- URL: http://arxiv.org/abs/2010.11817v1
- Date: Thu, 22 Oct 2020 15:54:35 GMT
- Title: Maximally entangled and GHz-clocked on-demand photon pair source
- Authors: Caspar Hopfmann, Weijie Nie, Nand Lal Sharma, Carmen Weigelt, Fei Ding
and Oliver G. Schmidt
- Abstract summary: We present a 1 GHz-clocked, maximally entangled and on-demand photon pair source based on droplet etched GaAs quantum dots using two-photon excitation.
- Score: 1.8428167155752175
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We present a 1 GHz-clocked, maximally entangled and on-demand photon pair
source based on droplet etched GaAs quantum dots using two-photon excitation.
By employing these GaP microlensenhanced devices in conjunction with their
substantial brightness, raw entanglement fidelities of up to $0.95 \pm 0.01$
and post-selected photon indistinguishabilities of up to $0.93 \pm 0.01$, the
suitability for quantum repeater based long range quantum entanglement
distribution schemes is shown. Comprehensive investigations of a complete set
of polarization selective two-photon correlations as well as time resolved
Hong-Ou-Mandel interferences facilitate innovative methods that determine
quantities such as photon extraction and excitation efficiencies as well as
pure dephasing directly - opposed to commonly employed indirect techniques.
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