Single-active-element demultiplexed multi-photon source
- URL: http://arxiv.org/abs/2304.12956v1
- Date: Tue, 25 Apr 2023 16:01:00 GMT
- Title: Single-active-element demultiplexed multi-photon source
- Authors: Lena M. Hansen, Lorenzo Carosini, Lennart Jehle, Francesco Giorgino,
Romane Houvenaghel, Michal Vyvlecka, Juan C. Loredo, Philip Walther
- Abstract summary: Temporal-to-spatial demultiplexing routes non-simultaneous events of the same spatial mode to distinct output trajectories.
We propose and demonstrate a demultiplexing approach that utilizes only a single active element for routing to, in principle, an arbitrary number of outputs.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Temporal-to-spatial demultiplexing routes non-simultaneous events of the same
spatial mode to distinct output trajectories. This technique has now been
widely adopted because it gives access to higher-number multi-photon states
when exploiting solid-state quantum emitters. However, implementations so far
have required an always-increasing number of active elements, rapidly facing
resource constraints. Here, we propose and demonstrate a demultiplexing
approach that utilizes only a single active element for routing to, in
principle, an arbitrary number of outputs. We employ our device in combination
with a high-efficiency quantum dot based single-photon source, and measure up
to eight demultiplexed highly indistinguishable single photons. We discuss the
practical limitations of our approach, and describe in which conditions it can
be used to demultiplex, e.g., tens of outputs. Our results thus provides a path
for the preparation of resource-efficient larger-scale multi-photon sources.
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