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We probe the principle of complementarity by performing a double-slit experiment based on entangled photons created by spontaneous parametric down-conversion from a pump mode in a TEM01-mode. Our setup brings out the need for a careful…

Quantum Physics · Physics 2018-08-07 Ralf Menzel , Robert Marx , Dirk Puhlmann , Axel Heuer , Wolfgang P. Schleich

It is by the long established fact in experiment and theory that electromagnetic waves, here as one component of an IED particle, passing a double slit will undergo self inference each, producing at a detector plane fringed intensities. The…

General Physics · Physics 2015-02-27 J. X. Zheng-Johansson

We present measurements of the second order spatial coherence function of thermal light sources using Hanbury-Brown and Twiss interferometry with a digital correlator. We demonstrate that intensity fluctuations between orthogonal…

Instrumentation and Methods for Astrophysics · Physics 2017-08-21 Nolan Matthews , David Kieda , Stephan LeBohec

We report the results of a double-slit-like experiment in the infrared range, which evidence an anomalous behaviour of photon systems under particular (energy and space) constraints. The statistical analysis of these outcomes (independently…

General Physics · Physics 2011-11-10 F. Cardone , R. Mignani , W. Perconti , A. Petrucci , R. Scrimaglio

Double-slits provide incoming photons with a choice. Those that survive the passage have chosen from two possible paths which interfere to distribute them in a wave-like manner. Such wave-particle duality continues to be challenged and…

Optics · Physics 2013-01-30 B. King , A. Di Piazza , C. H. Keitel

The visibilities of second-order (single-photon) and fourth-order (two-photon) interference have been observed in a Young's double-slit experiment using light generated by spontaneous parametric down-conversion and a photon-counting…

Quantum Physics · Physics 2009-11-07 A. F. Abouraddy , M. B. Nasr , B. E. A. Saleh , A. V. Sergienko , M. C. Teich

This paper considers a theoretical model of the double-slit experiment with electrons whose paths are monitored. This monitoring, inspired by a recent text by Maudlin, is performed by the Coulomb scattering of the electron by a proton. A…

Quantum Physics · Physics 2025-07-01 Frederick W. Strauch

We consider scanning gate microscopy imaging of the double slit interference for a pair of quantum point contacts (QPCs) defined within the two-dimensional electron gas. The interference is clearly present in the scattered electron wave…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 K. Kolasiński , B. Szafran , M. P. Nowak

The interaction between light and metal nanoparticles enables investigations of microscopic phenomena on nanometer length and ultrashort time scales, benefiting from strong confinement and enhancement of the optical field. However, the…

It is commonly assumed that the observation of an interference pattern is incompatible with any information about the path taken by a quantum particle. Here we show that, contrary to this assumption, the experimentally observable effects of…

Quantum Physics · Physics 2023-12-04 Holger F. Hofmann , Tomonori Matsushita , Shunichi Kuroki , Masataka Iinuma

We produce polarization entangled states with variable degree of entanglement for twin photons. Entanglement in polarization is coupled to entanglement in position that produces transverse coincidence interference fringes. We show both…

Quantum Physics · Physics 2009-11-07 M. Franca Santos , P. Milman , A. Z. Khoury , P. H. Souto Ribeiro

We analyze a double-slit experiment when the interfering particle is "mesoscopic" and one endeavors to obtain Welcher Weg information by shining light on it. We derive a compact expression for the visibility of the interference pattern:…

Quantum Physics · Physics 2007-05-23 P. Facchi , A. Mariano , S. Pascazio

A corpuscular simulation model for second-order intensity interference phenomena is discussed. It is shown that both the visibility ${\cal V}=1/2$ predicted for two-photon interference experiments with two independent sources and the…

Quantum Physics · Physics 2015-06-11 Kristel Michielsen , Fengping Jin , Mutia Delina , Hans De Raedt

In this paper, we theoretically investigate a particular experimental setup which coalesces the concepts of the double slit and single slit diffraction. In Thomas Young's classic double slit experiment, monochromatic plane light wave…

General Physics · Physics 2016-08-16 Supantho Rakshit

We analyze the double slit interference of a mesoscopic particle. We calculate the visibility of the interference pattern, introduce a characteristic temperature that defines the onset to decoherence and scrutinize the conditions that must…

Quantum Physics · Physics 2010-01-31 P. Facchi , S. Pascazio , T. Yoneda

Two-photon superbunching of pseudothermal light is observed with single-mode continuous-wave laser light in a linear optical system. By adding more two-photon paths via three rotating ground glasses,g(2)(0) = 7.10 is experimentally…

Optics · Physics 2017-10-11 Bin Bai , Jianbin Liu , Yu Zhou , Huaibin Zheng , Hui Chen , Songlin Zhang , Yuchen He , Fuli Li , Zhuo Xu

We study the generalized Young's double-slit interference for the beam produced in the spontaneously parametric down-conversion (SPDC). We find that the sub-wavelength lithography can occur macroscopically in both the two-photon intensity…

Quantum Physics · Physics 2007-05-23 De-Zhong Cao , Kaige Wang

A novel thermal light interferometer was recently introduced in V. Tamma and J. Seiler, New J. Phys. 18, 032002 (2016). Here, two classically correlated beams, obtained by beam splitting a thermal light beam, propagate through two…

Quantum Physics · Physics 2018-12-19 Vincenzo Tamma

A double-slit experiment with entangled photons is theoretically analyzed. It is shown that, under suitable conditions, two entangled photons of wavelength $\lambda$ can behave like a \emph{biphoton} of wavelength $\lambda/2$. The…

Quantum Physics · Physics 2018-02-23 Ananya Paul , Tabish Qureshi

It was recently proposed that the fringe visibility in the interference pattern of a double-slit diffraction experiment with a HeNe laser beam was reduced as a consequence of the focused attention of participants on the double-slit that…

Quantum Physics · Physics 2015-07-10 Fotini Pallikari