Generation of polarization-entangled photon pairs from two interacting quantum emitters
- URL: http://arxiv.org/abs/2503.02739v1
- Date: Tue, 04 Mar 2025 16:03:21 GMT
- Title: Generation of polarization-entangled photon pairs from two interacting quantum emitters
- Authors: Adrián Juan-Delgado, Geza Giedke, Javier Aizpurua, Ruben Esteban,
- Abstract summary: Entangled photon pairs are key elements in quantum communication and quantum cryptography.<n>We show that polarization-entangled photon pairs can be emitted from two interacting quantum emitters.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Entangled photon pairs are key elements in quantum communication and quantum cryptography. State-of-the-art sources of entangled photons are mainly based on parametric-down conversion from nonlinear crystals, which is probabilistic in nature, and on cascade emission from biexciton quantum dots, which finds difficulties in generating entangled photons in the visible regime. Here, we provide a proof-of-principle demonstration that polarization-entangled photon pairs can be emitted from two interacting quantum emitters with two-level-system behaviour and perpendicular transition dipole moments. These emitters can represent a large variety of systems (e.g., organic molecules, quantum dots and diamond-color centers) offering a large technological versatility, for example in the spectral regime of the emission. We show that a highly entangled photon pair can be post-selected from this system by including optical filters. Additionally, we verify that the photon entanglement is not significantly affected by small changes in the detection directions and in the orientation between the dipole moments.
Related papers
- Passive photonic CZ gate with two-level emitters in chiral multi-mode waveguide QED [41.94295877935867]
We design a passive conditional gate between co-propagating photons using an array of only two-level emitters.
The key resource is to harness the effective photon-photon interaction induced by the chiral coupling of the emitter array to two waveguide modes.
We show how to harness this non-linear phase shift to engineer a conditional, deterministic photonic gate in different qubit encodings.
arXiv Detail & Related papers (2024-07-08T18:00:25Z) - Temporal quantum eraser: Fusion gates with distinguishable photons [0.0]
We show that the ideal operation of two-photon gates can be recovered from distinguishable photons.<n>We introduce a temporal quantum eraser between a pair of modally-impure single-photon sources.<n>The ability to lift the requirement for identical photons bears considerable potential in linear-optics quantum information processing.
arXiv Detail & Related papers (2024-04-01T22:44:02Z) - 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) - Optical polaron formation in quantum systems with permanent dipoles [0.0]
We derive a master equation for optically active systems with spatially asymmetric electron orbitals.
Permanent dipole moments can significantly affect the system dynamics and create polarised Fock states of light.
We derive the emission spectrum of the system, highlighting experimentally detectable signatures of optical polarons.
arXiv Detail & Related papers (2023-03-07T15:52:54Z) - 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) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - 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) - Quantum nonlinear metasurfaces from dual arrays of ultracold atoms [0.4640835690336652]
We show how the coupling of light to more than a single atomic array can expand perspectives into the domain of quantum nonlinear optics.
The combination of two arrays is found to induce strong photon-photon interactions that can convert an incoming classical beam into highly antibunched light.
Such quantum metasurfaces open up new possibilities for coherently generating and manipulating nonclassical light.
arXiv Detail & Related papers (2022-01-17T17:47:11Z) - 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) - 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)
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.