Distillation of Indistinguishable Photons
- URL: http://arxiv.org/abs/2203.15197v3
- Date: Thu, 17 Nov 2022 18:31:53 GMT
- Title: Distillation of Indistinguishable Photons
- Authors: Jeffrey Marshall
- Abstract summary: A reliable source of identical (indistinguishable) photons is a prerequisite for interference effects.
We present a protocol which can be used to increase the indistinguishability of a photon source, to arbitrary accuracy.
We demonstrate the scheme is robust to detection and control errors in the optical components, and discuss the effect of other error sources.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A reliable source of identical (indistinguishable) photons is a prerequisite
for exploiting interference effects, which is a necessary component for linear
optical based quantum computing, and applications thereof such as Boson
sampling. Generally speaking, the degree of distinguishability will determine
the efficacy of the particular approach, for example by limiting the fidelity
of constructed resource states, or reducing the complexity of an optical
circuits output distribution. It is therefore of great practical relevance to
engineer heralded sources of highly pure and indistinguishable photons.
Inspired by magic state distillation, we present a protocol using standard
linear optics which can be used to increase the indistinguishability of a
photon source, to arbitrary accuracy. In particular, in the asymptotic limit of
small error $\epsilon$, to reduce the error to $\epsilon' < \epsilon$ requires
$O((\epsilon/\epsilon')^2)$ photons. We demonstrate the scheme is robust to
detection and control errors in the optical components, and discuss the effect
of other error sources.
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