Quantum interferences and gates with emitter-based coherent photon sources

• URL: http://arxiv.org/abs/2401.01187v2
• Date: Tue, 20 Feb 2024 15:28:34 GMT
• Title: Quantum interferences and gates with emitter-based coherent photon sources
• Authors: I. Maillette de Buy Wenniger, S. C. Wein, D. Fioretto, S. E. Thomas, C. Ant\'on-Solanas, A. Lema\^itre, I. Sagnes, A. Harouri, N. Belabas, N. Somaschi, P. Hilaire, J. Senellart, P. Senellart
• Abstract summary: Quantum emitters, such as atoms, defects in crystals, or quantum dots, are excellent sources of indistinguishable single-photons for quantum technologies. Upon coherent excitation, the emitted photonic state includes a vacuum component in a quantum superposition with the one-photon component. Here we experimentally and theoretically study how the presence of photon-number coherence alters the foundation of photon-photon gates.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum emitters, such as atoms, defects in crystals, or quantum dots, are excellent sources of indistinguishable single-photons for quantum technologies. Upon coherent excitation, however, the emitted photonic state includes a vacuum component in a quantum superposition with the one-photon component. This feature has so far been largely disregarded in the framework of linear optical computing. Here we experimentally and theoretically study how the presence of photon-number coherence alters the foundation of photon-photon gates: the Hong-Ou-Mandel interference. We show that the presence of vacuum coherence not only introduces errors to standard photon indistinguishability measurements, but also results in complex quantum interference phenomena. These phenomena lead to additional entanglement that has profound impact on linear computing schemes, as we illustrate by simulating a heralded gate. Our work reveals the rich physics arising from photon-number coherence, which holds the potential to become an asset in future quantum protocols.

Related papers

• Tripartite Entanglement in Multimode Cavity Quantum Electrodynamics [37.69303106863453]
  We numerically investigate the generation and dynamics of tripartite entanglement among qubits in multimode cavity quantum electrodynamics.<n>Our results hold promise for the development of entanglement-based quantum networking protocols and quantum memories.
  arXiv  Detail & Related papers  (2025-07-16T03:53:14Z)
• Experimental Verification of Electron-Photon Entanglement [39.58317527488534]
  Entanglement, a key resource of emerging quantum technologies, describes correlations between particles that defy classical physics. We demonstrate entanglement in electron-photon pairs generated via cathodoluminescence in a transmission electron microscope. Our work paves the way for exploring quantum correlations in free-electron systems and their application to quantum-enhanced imaging techniques on the nanoscale.
  arXiv  Detail & Related papers  (2025-04-17T17:58:50Z)
• Electric-field control of photon indistinguishability in cascaded decays in quantum dots [0.0]
  Decay cascades in quantum emitters offer a simple method to create entangled photon-pairs. Indistinguishability of photons emitted in a cascade is intrinsically limited by the lifetime ratio of the involved transitions. We show that, for the biexciton-exciton cascade in a quantum dot, this ratio can be widely tuned by an applied electric field.
  arXiv  Detail & Related papers  (2025-02-27T13:52:07Z)
• Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip [78.1768579844556]
  We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching. We study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.
  arXiv  Detail & Related papers  (2024-04-09T06:45:46Z)
• Coherently driven quantum features using a linear optics-based polarization-basis control [0.0]
  Coherence approach has been applied to interpret quantum features such as the Hong-Ou-Mandel (HOM) effect. A perfectly coherent analysis shows the same photon bunching of the paired coherent photons on a beam splitter.
  arXiv  Detail & Related papers  (2023-03-22T15:09:14Z)
• Multiphoton Correlations between Quantum Images [0.8701566919381222]
  Experimental demonstrations of entangled quantum images produced through parametric downconversion have so far been confined to studying two photon correlations. Here we show that multiphoton correlations between quantum images are accessible experimentally and exhibit many new features including being sensitive to the phase of the bi-photon wavefunction.
  arXiv  Detail & Related papers  (2022-11-16T05:07:52Z)
• 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)
• 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)
• Two-Photon Interference of Single Photons from Dissimilar Sources [0.0]
  Entanglement swapping and heralding are at the heart of many protocols for distributed quantum information. We develop a theoretical description of pulsed two-photon interference of photons from dissimilar sources. We study their dependence on critical system parameters such as quantum state lifetime and frequency detuning.
  arXiv  Detail & Related papers  (2022-02-10T07:51:27Z)
• 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)
• Quantifying quantum correlation of quasi-Werner state and probing its suitability for quantum teleportation [0.0]
  We analyze the behavior of the Wigner function of two quasi-Werner states theoretically constructed by superposing two normalized bipartite $m$-photon added coherent states. We show that the performance of the quasi-Werner states as quantum channel for the teleportation of a single-mode coherent and squeezed states, as quantified via teleportation fidelity, improves with the photon addition.
  arXiv  Detail & Related papers  (2020-11-30T11:30:31Z)
• Quantum Correlations beyond Entanglement and Discord [0.0]
  We experimentally realize a form of quantum correlation that exists even in the absence of entanglement and discord. We implement a robust kind of nonclassical photon-photon correlated state with useful applications in quantum information processing.
  arXiv  Detail & Related papers  (2020-10-07T15:52:20Z)
• 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)
• A bright and fast source of coherent single photons [46.25143811066789]
  A single photon source is a key enabling technology in device-independent quantum communication. We report a single photon source with an especially high system efficiency.
  arXiv  Detail & Related papers  (2020-07-24T17:08:46Z)
• Photorefractive effect in LiNbO$_3$-based integrated-optical circuits for continuous variable experiments [45.82374977939355]
  Photorefractive effect might compromise success of on-chip quantum photonics experiments. We focus on photorefractive effect induced by light at 775 nm, in the context of the generation of non-classical light at 1550 nm telecom wavelength.
  arXiv  Detail & Related papers  (2020-07-22T12:37:45Z)
• Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
  Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
  arXiv  Detail & Related papers  (2020-05-19T16:46:44Z)

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.