Related papers: Quantization and Biphoton Statistics of k-Gap Solitons in Nonlinear Photonic Time Crystals

Quantization and Biphoton Statistics of k-Gap Solitons in Nonlinear Photonic Time Crystals

URL: http://arxiv.org/abs/2606.30508v1
Date: Mon, 29 Jun 2026 16:16:47 GMT
Title: Quantization and Biphoton Statistics of k-Gap Solitons in Nonlinear Photonic Time Crystals
Abstract summary: photonic time crystals can support solitons inside momentum k gaps.<n>We show that k gap solitons are represented by biphoton Fock ladder states.<n>Our results establish a biphoton Fock space description of k gap soliton quantization.
Score: 3.6179876471032375
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Nonlinear photonic time crystals (PTCs) can support solitons inside momentum k gaps, where the amplification of k gap modes is saturated by Kerr nonlinearity, forming spatially homogeneous but temporally localized excitations. Yet their quantum nature remains unclear. Here we quantize nonlinear k gap dynamics of PTCs and show that k gap solitons are represented by biphoton Fock ladder states. K gap amplification drives two-mode squeezing of the biphoton, while Kerr nonlinearity generates an anharmonic potential along the biphoton Fock ladder that balances this squeezing process, creating a finite biphoton number turning point and giving rise to quantum collapse and revival dynamics and nonclassical phase space interference. We further analyze how photon loss and dephasing reshape the biphoton statistics of quantized k gap solitons. Our results establish a biphoton Fock space description of k gap soliton quantization and provide a framework for studying quantum nonlinear excitations and entangled light generation in photonic time crystals.

Related papers

Photon avalanche triggered by a single photon in a bistable nonlinear optical cavity [0.0]
We study the quantum dynamics of single-photon-stimulated jumps from the low-photon-number to the high-photon-number state of the optical bistability loop.<n>We find that the system can exhibit a giant response to this single quantum of excitation, rooted in the phase-transition picture of optical bistability.
arXiv Detail & Related papers (2026-06-25T21:10:34Z)
Generating spatially separated correlated multiphoton states in nonlinear waveguide quantum electrodynamics [7.847677608712246]
We propose a scalable architecture for producing correlated few-photon entangled states via cascaded inelastic scattering.<n>The resulting output state forms a programmable superposition of spatially and temporally isolated photon-number components.<n>This work opens a new paradigm in quantum state engineering, enabling on-demand generation of complex multi-photon resources.
arXiv Detail & Related papers (2025-11-18T09:16:12Z)
Mesoscopic cavity quantum electrodynamics with phase-disordered emitters in a Kerr nonlinear resonator [1.0890853201424715]
We demonstrate a few-emitter cavity QED system capable of realizing new Hamiltonians in quantum optics.<n>This work demonstrates the potential for solid state defect systems to realize emerging proposals and to study fundamental physics in quantum electrodynamics.
arXiv Detail & Related papers (2025-04-12T19:55:06Z)
Two-particle quantum interference in a nonlinear optical medium: a witness of timelike indistinguishability [9.138791215366014]
Hong-Ou-Mandel effect is a paradigmatic quantum phenomenon demonstrating the interference of two indistinguishable photons that are linearly coupled at a 50:50 beam splitter.<n>Here, we transpose such a two-particle quantum interference effect to the nonlinear regime, when two single photons are impinging on a parametric down-conversion crystal.<n>We experimentally demonstrate the suppression of the probability of detecting precisely one photon pair when the amplification gain is tuned to 2, which arises from the destructive interference between the transmitted and reborn photon pairs.
arXiv Detail & Related papers (2025-02-03T16:15:50Z)
Theory of the monochromatic advanced-wave picture and applications in biphoton optics [8.677297711526078]
Klyshko's advanced-wave picture (AWP) is mainly interpreted by replacing the nonlinear crystal producing biphotons via spontaneous parametric down-conversion.<n>We develop a formal theory of AWP with monochromatic lights that the conditional wave function of one photon is calculated by propagation, multiplication, and another propagation.<n>We analyze quantum imaging with undetected photons and quantum holography with polarization entanglement, where properties like the spatial resolution can be concisely deduced.
arXiv Detail & Related papers (2024-12-03T02:15:19Z)
Strong coupling between a single-photon and a two-photon Fock state [44.00303450801203]
We report an experimental observation of the strong coupling between a single-photon and a two-photon Fock state in an ultrastrongly-coupled circuit-QED system.<n>Results represent a key step towards a new regime of quantum nonlinear optics.
arXiv Detail & Related papers (2024-01-05T10:23:14Z)
Single-pass generation of widely-tunable frequency-domain entangled photon pairs [0.0]
We demonstrate a technique that generates frequency-entangled photon pairs with high polarization definition by using a single-period nonlinear crystal and single pass configuration. The generated photon pairs exhibit non-degenerate Hong-Ou-Mandel interference, indicating the presence of quantum entanglement in the frequency domain.
arXiv Detail & Related papers (2023-08-30T02:43:33Z)
Quantum vortices of strongly interacting photons [52.131490211964014]
Vortices are hallmark of nontrivial dynamics in nonlinear physics. We report on the realization of quantum vortices resulting from a strong photon-photon interaction in a quantum nonlinear optical medium. For three photons, the formation of vortex lines and a central vortex ring attests to a genuine three-photon interaction.
arXiv Detail & Related papers (2023-02-12T18:11:04Z)
Entanglement of annihilation photons [141.5628276096321]
We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Despite numerous measurements, there is still no experimental proof of the entanglement of photons.
arXiv Detail & Related papers (2022-10-14T08:21:55Z)
Enhanced generation of non-degenerate photon-pairs in nonlinear metasurfaces [55.41644538483948]
Non-degenerate photon-pair generation can enable orders-of-surface enhancement of the photon rate and spectral brightness. We show that the entanglement of the photon-pairs can be tuned by varying the pump polarization, which can underpin future advances and applications of ultra-compact quantum light sources.
arXiv Detail & Related papers (2021-04-15T08:20:17Z)
Optical repumping of resonantly excited quantum emitters in hexagonal boron nitride [52.77024349608834]
We present an optical co-excitation scheme which uses a weak non-resonant laser to reduce transitions to a dark state and amplify the photoluminescence from quantum emitters in hexagonal boron nitride (hBN) Our results are important for the deployment of atom-like defects in hBN as reliable building blocks for quantum photonic applications.
arXiv Detail & Related papers (2020-09-11T10:15:22Z)
Quantum nonlinear metasurfaces [68.8204255655161]
We outline a general quantum theory of spontaneous photon-pair generation in arbitrary nonlinear photonic structures. We discuss the first experimental results demonstrating photon-pair generation in a single nonlinear nanoantenna.
arXiv Detail & Related papers (2020-08-22T14:57:24Z)
Quantum-Clustered Two-Photon Walks [68.8204255655161]
We demonstrate a previously unknown two-photon effect in a discrete-time quantum walk. Two identical bosons with no mutual interactions can remain clustered together. The two photons move in the same direction at each step due to a two-photon quantum interference phenomenon.
arXiv Detail & Related papers (2020-03-12T17:02:35Z)

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