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We demonstrate laser interferometry based on phase difference between the two arms of the interferometer. The experiments are done with a Cs atomic vapor cell at room temperature and use atomic coherence. The interference can be tuned from…

Atomic Physics · Physics 2019-08-28 Mangesh Bhattarai , Sumanta Khan , Vasant Natarajan , Kanhaiya Pandey

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

We study a general theory on the interference of a two-photon wavepacket in a beam splitter. The theory is carried out in the Schr\"{o}dinger picture so that the quantum nature of the two-photon interference is explicitly presented. We find…

Quantum Physics · Physics 2007-05-23 Kaige Wang

The observation of the Hanbury Brown and Twiss (HBT) effect with thermal light marked the birth of quantum optics. All the thermal sources considered to date did not feature quantum signatures of light, as they consisted of independent…

Optics · Physics 2022-03-15 Ohad Lib , Yaron Bromberg

We study coherence of electron transport through interacting quantum dots and discuss the relation of the coherent part to the flux-sensitive conductance for three different types of Aharonov-Bohm interferometers. Contributions to transport…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Jürgen König , Yuval Gefen

We report a measurement of the transverse momentum correlation between two photons by detecting only one of them. Our method uses two identical sources in an arrangement, in which the phenomenon of induced coherence without induced emission…

Quantum Physics · Physics 2017-04-03 Armin Hochrainer , Mayukh Lahiri , Radek Lapkiewicz , Gabriela B. Lemos , Anton Zeilinger

This experiment reports a nontrivial third-order temporal correlation of chaotic-thermal light in which the randomly radiated thermal light is observed to have a 6-times greater chance of being captured by three individual photodetectors…

Quantum Physics · Physics 2009-09-30 Yu Zhou , Jianbin Liu , Yanhua Shih

Nearly 30 years ago, two-photon interference was observed, marking the beginning of a new quantum era. Indeed, two-photon interference has no classical analogue, giving it a distinct advantage for a range of applications. The peculiarities…

We have constructed an efficient source of photon pairs using a waveguide-type nonlinear device and performed a two-photon interference experiment with an unbalanced Michelson interferometer. Parametric down-converted photons from the…

Quantum Physics · Physics 2009-11-06 Kaoru Sanaka , Karin Kawahara , Takahiro Kuga

We experimentally realize quantum Hall Mach-Zehnder interferometer which operates far beyond the equilibrium. The operation of the interferometer is based on allowed intra-edge elastic transitions within the same Landau sublevel in the…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 E. V. Deviatov , A. Ganczarczyk , A. Lorke , G. Biasiol , L. Sorba

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

Thermal (or pseudo-thermal) radiation has been recently proposed for imaging and interference types of experiments to simulate entangled states. We report an experimental study on the momentum correlation properties of a pseudo-thermal…

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

Light is characterized by its electric field, yet quantum optics has revealed the importance of monitoring photon-photon correlations at all orders. We here present a comparative study of two experimental setups, composed of cold and warm…

We investigate wave-particle duality in a symmetric two-way interferometer with a which-way detector. We find that it is important to state wether the interfering object or the which-way detector is read out first. In case that the…

Quantum Physics · Physics 2010-06-11 Uwe Schilling , Joachim von Zanthier

Quantum theory of interference phenomena does not take the diameter of the particle into account, since particles were much smaller than the width of the slits in early observations. In recent experiments with large molecules, the diameter…

Quantum Physics · Physics 2007-05-23 Mirjana Bozic , Dusan Arsenovic , Lepsa Vuskovic

By using the coherent backscattering interference effect, we investigate experimentally and theoretically how coherent transport of light inside a cold atomic vapour is affected by the residual motion of atomic scatterers. As the…

Quantum Physics · Physics 2007-05-23 Guillaume Labeyrie , Dominique Delande , Robin Kaiser , Christian Miniatura

We provide a self-contained quantum description of the interference produced by macromolecules diffracted by a grating, with particular reference to fullerene interferometry experiments. We analyze the processes inducing loss of coherence…

Quantum Physics · Physics 2009-11-10 A. Viale , M. Vicari , N. Zanghi'

In this article, we propose the two-photon interference imaging based on two-photon interference mechanism with thermal light source. Theoretical and experimental results show that the imaging quality and imaging speed of two-photon…

Quantum Physics · Physics 2020-04-24 Deyang Duan , Yunjie Xia

Intensity interferometry of thermal photons, having transverse momenta $k_T \approx $ 0.1 -- 2.0 GeV, produced in relativistic collision of heavy nuclei is studied. It is seen to provide an accurate information about the temporal and…

Nuclear Theory · Physics 2009-11-10 Dinesh Kumar Srivastava

In an recent work with the title "Asking Photons Where They Have Been", Danan et al. experimentally demonstrate an intriguing behavior of photons in an interferometer [Phys. Rev. Lett. 111, 240402 (2013)]. In their words: "The photons tell…

Quantum Physics · Physics 2014-03-14 Pablo L. Saldanha