Related papers: Quantum nonlinear optics with counter-propagating photons

Quantum nonlinear optics with counter-propagating photons

URL: http://arxiv.org/abs/2506.01124v1
Date: Sun, 01 Jun 2025 19:10:01 GMT
Title: Quantum nonlinear optics with counter-propagating photons
Authors: Bankim Chandra Das, Ashley Harkavi, Aditya Prakash, Ariel Nakav, Lee Drori, Ofer Firstenberg,
Abstract summary: We experimentally demonstrate strong interactions between counter-propagating photons mediated by Rydberg polaritons.<n>Our results establish Rydberg polaritons as a powerful platform for engineering interactions in quantum light fields.
Score: 1.6477613234517667
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Realizing strong interactions between individual photons is a cornerstone for advancing photonic quantum computing and quantum nonlinear optics. Here, we experimentally demonstrate strong interactions between counter-propagating photons mediated by Rydberg polaritons, achieving a record-long anti-correlation range exceeding $1~\mu s$. This extended range enables the use of photon pulses that are long enough to fit within the polariton bandwidth, yet short enough to remain within the interaction range. Under these conditions, we observe complete photon blockade of entire pulses, tunable by the pulse timing, thus demonstrating the potential for controlled, deterministic operations. Extending to the three-photon regime, we observe enhanced interactions when a photon encounters two counter-propagating photons. Our results, supported by analytical theory and rigorous numerical simulations, establish counter-propagating Rydberg polaritons as a powerful platform for engineering interactions in quantum light fields.

Related papers

Theory of Three-Photon Transport Through a Weakly Coupled Atomic Ensemble [0.0]
Understanding multi-photon interactions in non-equilibrium quantum systems is an outstanding challenge in quantum optics.<n>We develop an analytical and diagrammatic framework to explore three-photon interactions in atomic ensembles weakly coupled to a one-dimensional waveguide.
arXiv Detail & Related papers (2025-07-04T09:36:26Z)
Multiband dispersion and warped vortices of strongly-interacting photons [36.939655407596426]
We study quantum correlations between interacting photons realized through co-propagating Rydberg polaritons.<n>For three photons, the dispersion breaks the symmetry between a photon pair propagating ahead versus behind a single photon.
arXiv Detail & Related papers (2025-02-17T08:35:10Z)
Strong coupling between a single photon and a photon pair [43.14346227009377]
We report an experimental observation of the strong coupling between a single photon and a photon pair in an ultrastrongly-coupled circuit-QED system. Results represent a key step towards a new regime of quantum nonlinear optics.
arXiv Detail & Related papers (2024-01-05T10:23:14Z)
Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
arXiv Detail & Related papers (2023-12-04T15:35:41Z)
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)
On-chip quantum information processing with distinguishable photons [55.41644538483948]
Multi-photon interference is at the heart of photonic quantum technologies. Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources. We show how time-resolved detection of non-ideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments.
arXiv Detail & Related papers (2022-10-14T18:16:49Z)
Quantum imaging exploiting twisted photon pairs [6.939768185086755]
We propose a quantum imaging scheme exploiting twisted photon pairs with tunable spatial-correlation regions. Our work could pave a way for twisted-photon-based quantum holography and quantum microscopy.
arXiv Detail & Related papers (2022-06-13T03:16:59Z)
Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
arXiv Detail & Related papers (2022-03-28T19:37:08Z)
Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
arXiv Detail & Related papers (2021-03-11T17:49:52Z)

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