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We have measured antinormally ordered Hanbury-Brown--Twiss correlations for coherent states of electromagnetic field by using stimulated parametric down-conversion process. Photons were detected by stimulated emission, rather than by…

Quantum Physics · Physics 2009-11-10 Koji Usami , Yoshihiro Nambu , Bao-Sen Shi , Akihisa Tomita , Kazuo Nakamura

We report measurements of an intensity-field correlation function of the resonance fluorescence of a single trapped Ba+ ion. Detection of a photon prepares the atom in its ground state and we observe its subsequent evolution under…

Quantum Physics · Physics 2015-05-13 S. Gerber , D. Rotter , L. Slodicka , J. Eschner , H. J. Carmichael , R. Blatt

We experimentally realize a high-intensity three-photon Greenberger-Horne-Zeilinger (GHZ) entanglement source directly following the proposal by Rarity and Tapster [J. G. Rarity and P. R. Tapster, Phys. Rev. A 59, R35 (1999)]. The threefold…

Quantum Physics · Physics 2008-09-16 Huai-Xin Lu , Jun Zhang , Xiao-Qin Wang , Ying-De Li , Chun-Yan Wang

The Hanbury Brown Twiss (HBT) interferometer was proposed to observe intensity correlations of starlight to measure a star's angular diameter. As the intensity of light that reaches the detector from a star is very weak, one cannot usually…

Quantum Physics · Physics 2017-12-11 Xiaoping Ma , Chenglong You , Sushovit Adhikari , Jonathan P. Dowling , Hwang Lee

Intensity interferometry originates from the field of radio astronomy on the trace of Robert Hanbury Brown and Richard Quincy Twiss. In high energy physics, the phenomena was discovered by Goldhaber, Goldhaber, Lee and Pais. In radio…

High Energy Physics - Experiment · Physics 2022-10-14 Sándor Lökös

The imminent availability of large arrays of large light collectors deployed to exploit atmospheric Cherenkov radiation for gamma-ray astronomy at more than 100GeV, motivates the growing interest in application of intensity interferometry…

Instrumentation and Methods for Astrophysics · Physics 2009-09-30 M. Daniel , W. J. de Wit , D. Dravins , D. Kieda , S. LeBohec , P. Nunez , E. Ribak

With the current revival of interest in astronomical intensity interferometry, it is interesting to revisit the associated theory, which was developed in the 1950s and 1960s. This paper argues that intensity interferometry can be understood…

Instrumentation and Methods for Astrophysics · Physics 2020-09-17 Prasenjit Saha

It is challenging for observing superbunching effect with true chaotic light, here we propose and demonstrate a method to achieve superbunching effect of the degree of second-order coherence is 2.42 with broadband stationary chaotic light…

Quantum Physics · Physics 2021-01-27 Sheng Luo , Yu Zhou , Huaibin Zheng , Jianbin Liu , Hui Chen , Yuchen He , Wanting Xu , Shuanghao Zhang , Fuli Li , Zhuo Xu

Since pioneering works of Hanbury-Brown and Twiss, intensity-intensity correlations have been widely used in astronomical systems, for example to detect binary stars. They reveal statistics effects and two-particle interference, and offer a…

Digital camera pixels measure image intensities by converting incident light energy into an analog electrical current, and then digitizing it into a fixed-width binary representation. This direct measurement method, while conceptually…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Atul Ingle , Trevor Seets , Mauro Buttafava , Shantanu Gupta , Alberto Tosi , Mohit Gupta , Andreas Velten

In traditional Hanbury Brown and Twiss (HBT) schemes, the thermal intensity-intensity correlations are phase insensitive. Here we propose a modified HBT scheme with phase conjugation to demonstrate the phase-sensitive and nonfactorizable…

Optics · Physics 2015-10-21 Li-Gang Wang , M. Al-Amri , M. Suhail Zubairy

I discuss two-particle intensity interferometry as a method to extract from measured 1- and 2-particle momentum spectra information on the space-time geometry and dynamics of the particle emitting source. Particular attention is given to…

Nuclear Theory · Physics 2007-05-23 Ulrich Heinz

We report the first experimental realization of entanglement swapping over large distances in optical fibers. Two photons separated by more than two km of optical fibers are entangled, although they never directly interacted. We use two…

Quantum Physics · Physics 2009-11-10 H. de Riedmatten , I. Marcikic , J. A. W. van Houwelingen , W. Tittel , H. Zbinden , N. Gisin

STAR observes a complex picture of RHIC collisions where correlation effects of different origins -- initial state geometry, semi-hard scattering, hadronization, as well as final state interactions such as quantum intensity interference --…

Nuclear Experiment · Physics 2019-08-14 Mikhail Kopytine

The impulsive excitation of ensembles of excitons or color centers by a high-energy electron beam results in the observation of photon bunching in the second-order correlation function of the cathodoluminescence generated by those emitters.…

Mesoscale and Nanoscale Physics · Physics 2023-01-26 Vasudevan Iyer , Kevin Roccapriore , Jacob Ng , Bernadeta Srijanto , David Lingerfelt , Benjamin Lawrie

Sonoluminescence may be studied in detail by intensity correlations among the emitted photons. As an example, we discuss an experiment to measure the size of the light-emitting region by the Hanbury Brown-Twiss effect. We show that single…

Quantum Physics · Physics 2009-10-30 S. Trentalange , S. U. Pandey

Intensity correlation measurements form the basis of many experiments based on spontaneous parametric down-conversion. In the most common situation, two single-photon avalanche diodes and coincidence electronics are used in the detection of…

Quantum Physics · Physics 2013-07-15 Daniel S. Tasca , Matthew P. Edgar , Frauke Izdebski , Gerald S. Buller , Miles J. Padgett

We demonstrate experimentally Hanbury Brown and Twiss (HBT) interferometry at a hard X-ray Free Electron Laser (XFEL) on a sample diffraction patterns. This is different from the traditional approach when HBT interferometry requires direct…

Intensity-intensity correlations are studied for light signals stemming from the spontaneous decay of surface plasmon oscillations, generated in the Kretschmann geometry. Non-classical photon statistics and the the transition from…

Quantum Physics · Physics 2013-01-10 Sandor Varro , Norbert Kroo , Daniel Oszetzky , Attila Nagy , Aladar Czitrovszky

To show the feasibility of a long distance partial Bell-State measurement, a Hong-Ou-Mandel experiment with coherent photons is reported. Pairs of degenerate photons at telecom wavelength are created by parametric down conversion in a…

Quantum Physics · Physics 2007-08-23 M. Halder , S. Tanzilli , H. de Riedmatten , A. Beveratos , H. Zbinden , N. Gisin
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