Optimization of collection optics for maximum fidelity in entangled
photon sources
- URL: http://arxiv.org/abs/2007.06748v1
- Date: Tue, 14 Jul 2020 00:48:22 GMT
- Title: Optimization of collection optics for maximum fidelity in entangled
photon sources
- Authors: Kadir Durak
- Abstract summary: decoherence sources for entangled photons created by spontaneous parametric down conversion phenomenon is studied.
The phase and spatial distinguishability of photon pairs from crystals reduce the maximum achievable entanglement fidelity.
A realistic scenario is numerically modelled, where the photon pairs with nonzero emission angle gather a phase difference.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this report the decoherence sources for entangled photons created by
spontaneous parametric down conversion phenomenon is studied. The phase and
spatial distinguishability of photon pairs from orthogonal crystals reduce the
maximum achievable entanglement fidelity. Carefully chosen compensation
crystals are used to erase the phase and spatial traces of down conversion
origins. Emission angle of photon pairs also leads to optical path difference
and resulting in phase distinguishability. A realistic scenario is numerically
modelled, where the photon pairs with nonzero emission angle gather a phase
difference. These pairs can still be collected and manipulated for practical
use but the collection optics adds upon the phase difference. Two commercially
available optics for collection; aspheric and achromatic lenses are compared.
The numerical simulation results are compared with the experimental results to
validate the built model for predicting the maximum achievable entanglement
fidelity. The results indicate that the fidelity can be accurately estimated
with the presented model by inserting the experimental parameters to it. The
study is expected to be very useful for preparation and optimization of
entangled photon pair sources in critical phase-matching configuration.
Related papers
- Advancing the heralded photon number-state characterization by understanding the interplay of experimental imperfections [0.0]
We theoretically explore the properties of heralded number states including up to three photons generated from single-mode twin beams.
We use the fidelity, normalized second-order factorial moment of photon number for the heralded state $(g(2)_h)$, and photon-number parity as figures of merit.
arXiv Detail & Related papers (2025-02-17T10:20:39Z) - Partial-immunity of two-photon correlation against wavefront distortion for spatially entangled photons [0.0]
High-dimensional quantum entanglement in photons offers notable technological advancements over traditional qubit-based systems.
However, such high-dimensional states are vulnerable to disruption by complex disordered media, presenting significant challenges in practical applications.
We present a systematic study of the randomization of two-photon correlations caused by arbitrary phase distortions in the far field.
arXiv Detail & Related papers (2024-12-12T13:31:20Z) - The Influence of Experimental Imperfections on Photonic GHZ State Generation [0.0]
We investigate the influence of photon loss, multi-photon terms and photon distinguishability on the generation of photonic 3-partite GHZ states via established fusion protocols.
We show that different types of imperfections are dominant with respect to the fidelity and generation success probability.
arXiv Detail & Related papers (2024-06-26T11:09:23Z) - End-to-End Hybrid Refractive-Diffractive Lens Design with Differentiable Ray-Wave Model [18.183342315517244]
We propose a new hybrid ray-tracing and wave-propagation (ray-wave) model for accurate simulation of both optical aberrations and diffractive phase modulation.
The proposed ray-wave model is fully differentiable, enabling gradient back-propagation for end-to-end co-design of refractive-diffractive lens optimization and the image reconstruction network.
arXiv Detail & Related papers (2024-06-02T18:48:22Z) - NeISF: Neural Incident Stokes Field for Geometry and Material Estimation [50.588983686271284]
Multi-view inverse rendering is the problem of estimating the scene parameters such as shapes, materials, or illuminations from a sequence of images captured under different viewpoints.
We propose Neural Incident Stokes Fields (NeISF), a multi-view inverse framework that reduces ambiguities using polarization cues.
arXiv Detail & Related papers (2023-11-22T06:28:30Z) - Atomic diffraction from single-photon transitions in gravity and
Standard-Model extensions [49.26431084736478]
We study single-photon transitions, both magnetically-induced and direct ones, in gravity and Standard-Model extensions.
We take into account relativistic effects like the coupling of internal to center-of-mass degrees of freedom, induced by the mass defect.
arXiv Detail & Related papers (2023-09-05T08:51:42Z) - Modeling the space-time correlation of pulsed twin beams [68.8204255655161]
Entangled twin-beams generated by parametric down-conversion are among the favorite sources for imaging-oriented applications.
We propose a semi-analytic model which aims to bridge the gap between time-consuming numerical simulations and the unrealistic plane-wave pump theory.
arXiv Detail & Related papers (2023-01-18T11:29:49Z) - Spatial and temporal characteristics of spontaneous parametric down-conversion with varying focal planes of interacting beams [0.0]
Spontaneous parametric down-conversion (SPDC) is a widely used process to prepare entangled photon pairs.
The exact focal plane position of the pump beam relative to those of the detection modes is difficult to determine in a real experiment.
In this work, we consider variable positions of focal planes and investigate how shifts of these focal planes influence the spatial and temporal properties of photon pairs.
arXiv Detail & Related papers (2022-12-23T20:04:24Z) - Amplification of cascaded downconversion by reusing photons with a
switchable cavity [62.997667081978825]
We propose a scheme to amplify triplet production rates by using a fast switch and a delay loop.
Our proof-of-concept device increases the rate of detected photon triplets as predicted.
arXiv Detail & Related papers (2022-09-23T15:53:44Z) - Remote Phase Sensing by Coherent Single Photon Addition [58.720142291102135]
We propose a remote phase sensing scheme inspired by the high sensitivity of the entanglement produced by coherent multimode photon addition on the phase set in the remote heralding apparatus.
We derive the optimal observable to perform remote phase estimation from heralded quadrature measurements.
arXiv Detail & Related papers (2021-08-26T14:52:29Z) - Two-photon resonance fluorescence of two interacting non-identical
quantum emitters [77.34726150561087]
We study a system of two interacting, non-indentical quantum emitters driven by a coherent field.
We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters.
This can be exploited for applications such as superresolution imaging of point-like sources.
arXiv Detail & Related papers (2021-06-04T16:13:01Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.