Related papers: Hot-spots and gain enhancement in a doubly pumped parametric down-conversion process

Hot-spots and gain enhancement in a doubly pumped parametric down-conversion process

URL: http://arxiv.org/abs/2007.12429v1
Date: Fri, 24 Jul 2020 09:39:03 GMT
Title: Hot-spots and gain enhancement in a doubly pumped parametric down-conversion process
Authors: Ottavia Jedrkiewicz, Erica Invernizzi, Enrico Brambilla and Alessandra Gatti
Abstract summary: We experimentally investigate the parametric down-conversion process in a nonlinear bulk crystal, driven by two non-collinear pump modes. The experiment shows the emergence of bright hot-spots in modes shared by the two pumps, in analogy with the phenomenology recently observed in 2D nonlinear photonic crystals.
Score: 62.997667081978825
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We experimentally investigate the parametric down-conversion process in a nonlinear bulk crystal, driven by two non-collinear pump modes. The experiment shows the emergence of bright hot-spots in modes shared by the two pumps, in analogy with the phenomenology recently observed in 2D nonlinear photonic crystals. By exploiting the spatial walk-off between the two extraordinary pump modes we have been able to recreate a peculiar resonance condition, reported by a local enhancement of the parametric gain, which corresponds to a transition from a three-mode to a four-mode coupling. From a quantum point of view this opens the way to the generation of multimode entangled states of light such as tripartite or quadripartite states, in simple bulk nonlinear sources.

Related papers

Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
arXiv Detail & Related papers (2024-08-30T15:54:33Z)
Photoinduced prethermal order parameter dynamics in the two-dimensional large-$N$ Hubbard-Heisenberg model [77.34726150561087]
We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model. We simulate the light-induced transition between two competing phases.
arXiv Detail & Related papers (2022-05-13T13:13:31Z)
Multipartite spatial entanglement generated by concurrent nonlinear processes [91.3755431537592]
Continuous variables multipartite entanglement is a key resource for quantum technologies. This work considers the multipartite entanglement generated in separated spatial modes of the same light beam by three different parametric sources.
arXiv Detail & Related papers (2021-11-09T17:15:13Z)
Degenerate squeezing in a dual-pumped integrated microresonator: parasitic processes and their suppression [0.0]
We theoretically study the generation of degenerate quadrature squeezing in a dual-pumped integrated microring resonator coupled to a waveguide. Considering a dual-pump four-wave mixing configuration in an integrated $textSi_3textN_4$ platform, we investigate the effects of parasitic quantum nonlinear optical processes on the generation of squeezed light.
arXiv Detail & Related papers (2021-09-07T19:17:36Z)
Supermode-based second harmonic generation in a nonlinear interferometer [0.0]
We demonstrate supermode-based second harmonic generation in an integrated nonlinear interferometer made of linear and nonlinear directional couplers. We use a fully-fibered pump shaper to demonstrate second harmonic generation pumped by the symmetric or anti-symmetric fundamental spatial modes.
arXiv Detail & Related papers (2021-06-24T17:33:34Z)
Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
arXiv Detail & Related papers (2020-07-23T13:53:12Z)
Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)
Exploring entanglement in open cavity parametric oscillators: from triply to doubly resonant cavities [0.0]
We demonstrate the entanglement of the pump mode with converted fields in both situations. The strong correlations involving the sidebands of the pump and converted fields gives the signatures of a rich dynamic of multipartite entanglement.
arXiv Detail & Related papers (2020-04-13T22:11:07Z)

This list is automatically generated from the titles and abstracts of the papers in this site.