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We report an experiment of observation of classical double-slit interference fringes of two-photon interference. In the experiment, a commercial continuous-wave multi-mode F-P laser diode without either mode-locked or frequency-locked is…

Quantum Physics · Physics 2024-02-26 Hongmin Liu

The Young double-slit interference pattern produced by quantum objects, like photons, that move through a double-slit is regarded, by the conventional Copenhagen interpretation of Quantum Mechanics, as the evidence of the wave-like…

Quantum Physics · Physics 2017-12-01 Andrea Petrucci

We show that a thermal light random in transverse direction can perform subwavelength double slit interference in a joint-intensity measurement. This is the classical version of quantum lithography, and it can be explained with the…

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

The double slit experiment provides a classic example of both interference and the effect of observation in quantum physics. When particles are sent individually through a pair of slits, a wave-like interference pattern develops, but no…

Quantum Physics · Physics 2016-07-01 Joshua Kincaid , Kyle McLelland , Michael Zwolak

The wave nature of light is revealed by diffraction from physical structures. We report a time-domain version of the classic Young's double-slit experiment: a beam of light twice gated in time produces an interference in the frequency…

The wave-particle duality is the main point of demarcation between quantum and classical physics, and is the quintessential mystery of quantum mechanics. Young's two-slit interference experiment is the arch prototype of actual and gedanken…

General Physics · Physics 2007-05-23 Mario Rabinowitz

Entangling independent photons is not only of fundamental interest but also of crucial importance for quantum information science. Two-photon interference is a major method to entangle independent identical photons. If two photons are…

Quantum Physics · Physics 2015-01-27 Tian-Ming Zhao , Han Zhang , Jian Yang , Zi-Ru Sang , Xiao Jiang , Xiao-Hui Bao , Jian-Wei Pan

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

The study of entangled states has greatly improved the basic understanding about two-photon interferometry. Two-photon interference is not the interference of two photons but the result of superposition among indistinguishable two-photon…

Quantum Physics · Physics 2009-11-10 Giuliano Scarcelli , Alejandra Valencia , Yanhua Shih

Spatial interference of quantum mechanical particles exhibits a fundamental feature of quantum mechanics. A two-mode entangled state of N particles known as N00N state can give rise to non-classical interference. We report the first…

Quantum Physics · Physics 2015-05-20 Yong-Su Kim , Osung Kwon , Sang Min Lee , Heonoh Kim , Sang-Kyung Choi , Hee Su Park , Yoon-Ho Kim

Matter-wave interferometry has been largely studied in the last few years. Usually, the main problem in the analysis of the diffraction experiments is to establish the causes for the loss of coherence observed in the interference pattern.…

Quantum Physics · Physics 2008-11-26 Paula I. Villar , Fernando C. Lombardo

We have implemented a virtual Young's double slit experiment for hard X-ray photons with micro-fabricated bi-prisms. We observe fringe patterns with a scintillator, and quantify interferograms by detecting X-ray fluorescence from a scanned…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 A. F. Isakovic , A. Stein , J. B. Warren , A. R. Sandy , S. Narayanan , M. Sprung , J. M. Ablett , D. P. Siddons , M. Metzler , K. Evans-Lutterodt

The second-order temporal interference between two independent single-mode continuous-wave lasers is discussed by employing two-photon interference in Feynman's path integral theory. It is concluded that whether the second-order temporal…

Optics · Physics 2016-03-18 Jianbin Liu , Dong Wei , Hui Chen , Yu Zhou , Huaibin Zheng , Hong Gao , Fu-li Li , Zhuo Xu

We report a quantum eraser experiment which actually uses a Young double-slit to create interference. The experiment can be considered an optical analogy of an experiment proposed by Scully, Englert and Walther. One photon of an entangled…

Quantum Physics · Physics 2009-11-07 S. P. Walborn , M. O. Terra Cunha , S. Padua , C. H. Monken

In this paper we present a double slit experiment where two undistinguishable photons produced by type I PDC are sent each to a well defined slit. Data about the diffraction and interference patterns for coincidences are presented and…

Quantum Physics · Physics 2009-11-10 G. Brida , E. Cagliero , G. Falzetta , M. Genovese M. Gramegna , E. predazzi

The interference pattern produced by a quantum particle in Young's double-slit setup is attributed to the particle's wavefunction having gone through both slits. In the path integral formulation, this interference involves a superposition…

Quantum Physics · Physics 2022-06-02 Q. Duprey , A. Matzkin

This paper explores the possibility of the existence of dark photons within the visible light range and provides evidence for their existence through a thought experiment. A new model of dark photons is established based on extensive…

Optics · Physics 2024-12-17 Weinan Wang

Thomas Young's slit experiment lies at the heart of classical interference and quantum mechanics. Over the last fifty years, it has been shown that particles (e.g. photons, electrons, large molecules), even individual particles, generate an…

Instrumentation and Methods for Astrophysics · Physics 2021-07-21 Joss Bland-Hawthorn , Matt Sellars , John Bartholomew

The nature of two-photon interference is a subject that has aroused renewed interest in recent years and is still under debate. In this paper we report the first observation of two-photon interference with independent pseudo-thermal sources…

Quantum Physics · Physics 2009-11-13 Yan-Hua Zhai , Xi-Hao Chen , Ling-An Wu

The momentum of a photon may reveal the answer to the "which way" problem of Young's double slit experiments. A photon passing through the boundary between two media, in which a photon travels at different velocities, undergoes a momentum…

Quantum Physics · Physics 2009-05-14 Masanori Sato