Narrow and broadband single-photon sources using customised-tapered
waveguides
- URL: http://arxiv.org/abs/2107.14501v1
- Date: Fri, 30 Jul 2021 09:07:27 GMT
- Title: Narrow and broadband single-photon sources using customised-tapered
waveguides
- Abstract summary: We present a thorough investigation for a spontaneous parametric four-wave mixing process in third-order nonlinear waveguides.
We found that these devices can enable single-photon sources with either narrow or broadband spectral widths at on-demand frequencies.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this paper, we present a thorough investigation for a spontaneous
parametric four-wave mixing process in third-order nonlinear waveguides with
various continuous tapering patterns. It has been previously shown that these
devices can quasi-phase-match the four-wave-mixing process and enhance its
conversion efficiency by orders of magnitude. By altering the tapering profile
curve we found that these devices can enable single-photon sources with either
narrow or broadband spectral widths at on-demand frequencies. Using our model,
we were also able to identify the waveguide length at which the single-photon
spectral purity is maximised.
Related papers
- Coincidence-based spectral engineering for spectral matching in cascaded downconversion [39.146761527401424]
Three-photon states generated via cascaded spontaneous parametric downconversion provide a direct route to multipartite entanglement.<n>We show that coincidence-based spectral filtering relaxes the requirement by conditionally tailoring the spectrum of the pump photon entering the second stage.
arXiv Detail & Related papers (2026-09-04T17:29:08Z) - Spectral evolution of two-photon emission in microresonators [0.0]
High-Q silicon nitride microresonators are versatile sources for generating photon pairs via four-wave mixing.<n>We investigate the spectral coherence of this process, tracking the transition from the spontaneous quantum regime to the onset of optical parametric oscillation.
arXiv Detail & Related papers (2026-08-05T10:52:08Z) - Spectro-temporally tailored Non-Gaussian Quantum Operations in Thin-Film Waveguides [0.0]
We address the challenge of implementing spectro-temporal mode-selective non-Gaussian quantum operations in the telecom wavelength regime.<n>We present the first design framework for achieving mode-selective SPA and SPS using thin-film lithium niobate nonlinear waveguide platforms.
arXiv Detail & Related papers (2025-08-06T16:03:18Z) - How to use the dispersion in the $χ^{(3)}$ tensor for broadband generation of polarization-entangled photons [0.0]
Polarization-entangled photon pairs are a widely used resource in quantum optics and technologies.
We show broadband (tens of THz for each photon) generation of polarization-entangled photon pairs by spontaneous four-wave mixing in a diamond crystal.
arXiv Detail & Related papers (2024-08-21T09:43:23Z) - Efficient diffraction control using a tunable active-Raman gain medium [2.5275980099154984]
We present a new scheme to create all-optical and tunable waveguide using a controllable coherent Raman process in an atomic rubidium vapor in N-type configuration.
We numerically demonstrate that such a waveguide is able to guide arbitrary modes of a weak probe beam to several Rayleigh length without diffraction and absorption.
arXiv Detail & Related papers (2024-04-16T04:47:26Z) - Avoiding lateral mode leakage in thin film lithium niobate waveguides
for the generation of spectrally pure photons at telecom wavelengths [0.0]
Photonic integrated optical components, notably straight waveguides, serve as pivotal elements for on-chip generation and manipulation of quantum states of light.
We focus on optimizing waveguides based on lithium niobate on insulator (LNOI) to generate photon pairs at telecom wavelength using spontaneous parametric down-conversion (SPDC)
Specifically, we investigate lateral leakage for all possible SPDC processes involving type 0, type I and type II phase matching conditions in an X-cut lithium niobate waveguide.
arXiv Detail & Related papers (2024-02-08T14:12:55Z) - Machine Learning Extreme Acoustic Non-reciprocity in a Linear Waveguide
with Multiple Nonlinear Asymmetric Gates [68.8204255655161]
This work is a study of acoustic non-reciprocity exhibited by a passive one-dimensional linear waveguide incorporating two local strongly nonlinear, asymmetric gates.
The maximum transmissibility reaches as much as 40%, and the transmitted energy from upstream to downstream varies up to nine orders of magnitude, depending on the direction of wave propagation.
arXiv Detail & Related papers (2023-02-02T17:28:04Z) - Ultrabright and narrowband intra-fiber biphoton source at ultralow pump
power [51.961447341691]
Nonclassical photon sources of high brightness are key components of quantum communication technologies.
We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber.
arXiv Detail & Related papers (2022-08-10T09:04:15Z) - Mitigating indistinguishability issues in photon pair sources by
delayed-pump Intermodal Four Wave Mixing [0.0]
Delayed-pump Intermodal Four Wave Mixing (IFWM) in multimode waveguides has recently demonstrated record performances in all these metrics.
We show that by tapering the width of the waveguide and by controlling the delay between the pump pulses, we add spectral tunability to the source.
arXiv Detail & Related papers (2022-01-03T14:20:02Z) - Complete conversion between one and two photons in nonlinear waveguides
with tailored dispersion [62.997667081978825]
We show theoretically how to control coherent conversion between a narrow-band pump photon and broadband photon pairs in nonlinear optical waveguides.
We reveal that complete deterministic conversion as well as pump-photon revival can be achieved at a finite propagation distance.
arXiv Detail & Related papers (2021-10-06T23:49:44Z) - Tunable Anderson Localization of Dark States [146.2730735143614]
We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system.
We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes.
The experiment opens the door to the study of various localization phenomena on a new platform.
arXiv Detail & Related papers (2021-05-25T07:52:52Z) - Generalization of Second-Order Quasi-Phase Matching in Whispering
Gallery Mode Resonators Using Berry Phase [77.34726150561087]
Second order nonlinearities in whispering gallery mode resonators are investigated for their many applications.
We first detail the case of Zinc-blende materials and then generalize this theory to other crystal symmetries relevant for integrated photonics.
arXiv Detail & Related papers (2020-06-23T12:35:12Z) - Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control.
We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap.
The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
arXiv Detail & Related papers (2020-06-05T09:27:53Z) - Tunable quantum interference using a topological source of
indistinguishable photon pairs [0.0]
We demonstrate the use of a two-dimensional array of ring resonators to generate indistinguishable photon pairs.
We show that the linear dispersion of the edge states over a broad bandwidth allows us to tune the correlations.
Our results pave the way for scalable and tunable sources of squeezed light.
arXiv Detail & Related papers (2020-06-04T18:11:30Z)
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.