Quantum Interference of Distinguishable Photons Based on Spatially-Resolved Measurements

• URL: http://arxiv.org/abs/2508.14845v1
• Date: Wed, 20 Aug 2025 16:56:59 GMT
• Title: Quantum Interference of Distinguishable Photons Based on Spatially-Resolved Measurements
• Authors: Miguel Angel Gonzalez, Alejandra Alarcón, Andres Camilo Quintero, Daniel Sabogal, Luca Maggio, Vincenzo Tamma, Daniel F. Urrego, Alejandra Valencia,
• Abstract summary: We present experimental results demonstrating the quantum interference of two photons distinguishable in their transverse momenta.<n>We contrast our results with a non-spatially resolved measurement where averaging over the photons' positions washes out the quantum interference observed in spatially resolved measurements.
• Score: 67.410870290301
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present experimental results demonstrating the quantum interference of two photons distinguishable in their transverse momenta, each entering the input ports of a balanced beam splitter. This counterintuitive interference effect is made possible through spatially resolved measurements in the near field, i.e., by resolving the conjugate variable in which the photons are distinguishable. Our experimental findings agree with theoretical predictions. We contrast our results with a non-spatially resolved measurement where averaging over the photons' positions washes out the quantum interference observed in spatially resolved measurements.

Related papers

• Extracting the photon indistinguishability error from measurable quantum observables [0.0]
  We present a method to extract the photon indistinguishability error from Hong-Ou-Mandel interference measurements.<n>The reported method applies to a wide range of single-photon sources, including quantum dots.
  arXiv  Detail & Related papers  (2025-10-02T07:15:43Z)
• Momentum-resolved Hong-Ou-Mandel interference of weak coherent states [0.0]
  We demonstrate an experimental scheme for high-precision position measurements based on two-photon interferometry with independent photons and SPAD arrays.<n>Our scheme extends the operative range of Hong-Ou-Mandel interferometry beyond its intrinsic constraints due to photons indistinguishability.<n>We show that partial photon distinguishability and entanglement impurity are not necessarily a nuisance in a technique that relies on two-photon interference.
  arXiv  Detail & Related papers  (2025-08-27T15:37:20Z)
• Quantum nonlocal double slit interference with partially coherent qubits [0.0]
  We investigate the effect of coherence variation on non-local double-slit quantum interference.<n>For a fixed beam size, the momentum correlation width of partially coherent biphotons increases with the decreases in the transverse coherence length.<n>Our findings infer both high-quality and near-unity visibility of nonlocal interference using the partially coherent twin beams, even with the substantial decrease in the coherence of the pump.
  arXiv  Detail & Related papers  (2025-03-02T18:46:31Z)
• Two-photon interference between mutually-detuned resonance fluorescence signals scattered off a semiconductor quantum dot [8.451939626098337]
  Post-selective two-photon interference experiments between mutually-detuned resonance fluorescence signals from an InAs quantum dot embedded in a micropillar cavity.<n>Results suggest that indistinguishability among photons scattered off a quantum dot is inherently insensitive to the driving laser's detuning.
  arXiv  Detail & Related papers  (2025-01-28T13:32:26Z)
• Measuring the Evolution of Entanglement in Compton Scattering [101.11630543545151]
  The behavior of quantum entanglement during scattering is identical to the behavior of initially classically correlated photons up to a constant factor equal to two. Our dedicated experiment with photons confirms these results and explains the "Puzzle of Decoherence" observed recently.
  arXiv  Detail & Related papers  (2024-06-20T14:21:23Z)
• 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)
• Estimation with ultimate quantum precision of the transverse displacement between two photons via two-photon interference sampling measurements [0.0]
  We present a quantum sensing scheme achieving the ultimate quantum sensitivity in the estimation of the transverse displacement between two photons interfering at a balanced beam splitter. This scheme can possibly lead to enhanced high-precision nanoscopic techniques, such as super-resolved single-molecule localization microscopy with quantum dots.
  arXiv  Detail & Related papers  (2023-09-13T11:18:00Z)
• An Easier-To-Align Hong-Ou-Mandel Interference Demonstration [0.0]
  Hong-Ou-Mandel interference experiment is a fundamental demonstration of nonclassical interference. Experiment involves the interference of two photons reaching a symmetric beamsplitter.
  arXiv  Detail & Related papers  (2023-01-17T20:12:03Z)
• Tailoring photon statistics with an atom-based two-photon interferometer [0.0]
  We actively control the quantum phase between the transmitted and incoherently scattered two-photon component. We observe interference fringes in the normalized photon coincidence rate, varying from antibunching to bunching. Our results lend themselves to the development of novel quantum light sources.
  arXiv  Detail & Related papers  (2022-12-19T16:24:54Z)
• 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)
• Symmetry allows for distinguishability in totally destructive many-particle interference [52.77024349608834]
  We investigate, in a four photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a $J_x$ unitary. We show that totally destructive interference does not require mutual indistinguishability between all, but only between symmetrically paired particles.
  arXiv  Detail & Related papers  (2021-02-19T16:37:19Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)

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.