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To achieve a distributed reflectivity measurement along an optical fiber, we develop a simplified cost-effective configuration of optical correlation- (or coherence-) domain reflectometry based on a synthesized optical coherence function by…

Two-color second-order correlations of the light scattered near-resonantly by a quantum dot were measured by means of spectrally-filtered coincidence detection. The effects of filter frequency and bandwidth were studied under monochromatic…

Quantum Physics · Physics 2015-05-20 M. Peiris , B. Petrak , K. Konthasinghe , Y. Yu , Z. C. Niu , A. Muller

We analyze the statistics of photons originating from amplified spontaneous emission generated by a quantum dot superluminescent diode. Experimentally detectable emission properties are taken into account by parametrizing the corresponding…

Quantum Physics · Physics 2015-06-23 S. Hartmann , F. Friedrich , A. Molitor , M. Reichert , W. Elsäßer , R. Walser

We demonstrate coincidence measurements of spatially entangled photons by means of a novel type of multi-pixel based detection array. The adopted sensor is a fully digital 8$\times$16 silicon photomultiplier array allowing not only photon…

Instrumentation and Detectors · Physics 2016-12-19 Manuel Unternährer , Bänz Bessire , Leonardo Gasparini , David Stoppa , André Stefanov

Hanbury-Brown and Twiss (HBT) effect is the foundation for stellar intensity interferometry. However, it is a phase insensitive two-photon interference effect. In this paper, we extend the HBT interferometer by mixing two phase-coherent…

Quantum Physics · Physics 2025-02-07 Xuan Tang , Yunxiao Zhang , Xueshi Guo , Liang Cui , Xiaoying Li , Z. Y. Ou

The homogenization procedure developed here is conducted on a laminate with periodic space-time modulation on the fine scale: at leading order, this modulation creates convection in the low-wavelength regime if both parameters are…

Analysis of PDEs · Mathematics 2024-07-12 Marie Touboul , Bruno Lombard , Raphaël Assier , Sébastien Guenneau , Richard Craster

We present a method to separate coherent and incoherent contributions of cathodoluminescence (CL) by using a time-resolved coincidence detection scheme. For a proof-of-concept experiment, we generate CL by irradiating an optical multimode…

Optical phase measurements play a key role in the detection of macroscopic parameters such as position, velocity, and displacement. They also permit to qualify the microscopic properties of photonic waveguides such as polarization mode…

Quantum Physics · Physics 2024-12-19 Romain Dalidet , Laurent Labonté , Gregory Sauder , Sébastien Tanzilli , Anthony Martin

We demonstrate the use of two high speed avalanche photodiodes in exploring higher order photon correlations. By employing the photon number resolving capability of the photodiodes the response to higher order photon coincidences can be…

Quantum Physics · Physics 2011-07-18 J. F. Dynes , Z. L. Yuan , A. W. Sharpe , O. Thomas , A. J. Shields

This work is concerned with the high contrast stochastic homogenization of the Helmholtz equation. Our goal is to characterize the second order moments of the scaling limit of the fluctuations of the wavefield. We show that these moments…

Analysis of PDEs · Mathematics 2024-03-25 Olivier Pinaud

Phase transitions between different states of matter can profoundly modify the order in physical systems, with the emergence of ferromagnetic or topological order constituting important examples. Correlations allow to quantify the degree of…

Quantum Gases · Physics 2017-08-22 Tobias Damm , David Dung , Frank Vewinger , Martin Weitz , Julian Schmitt

Polarization-entangled photon pairs generated from second-order nonlinear optical media have been extensively studied for both fundamental research and potential applications of quantum information. In spontaneous parametric down-conversion…

Quantum Physics · Physics 2024-10-01 B. S. Ham

The experimental check of two--mode Robertson uncertainty relations and inequalities for highest quadrature moments is suggested by using homodyne photon detection. The relation between optical tomograms and symplectic tomograms is used to…

Quantum Physics · Physics 2015-06-04 V. I. Man'ko , G. Marmo , A. Simoni , F. Ventriglia

To characterize the statistics and indistinguishability of a source, it is common to measure the correlation functions of the emitted field using various interferometers. Here, we present a theoretical framework for the computation of the…

Quantum Physics · Physics 2019-01-30 E. Baudin , R. Proux , M. Maragkou , Ph. Roussignol , C. Diederichs

Mixing the fields generated by different light sources has emerged as a powerful approach for engineering non-Gaussian quantum states. Understanding and controlling the resulting photon statistics is useful for emerging quantum technologies…

Recent progress in ultrafast optics facilitates the investigation of the dynamics of highly multimode quantum states of light, as demonstrated by the application of electro-optic sampling to quantum states of the electromagnetic field. Yet,…

Quantum Physics · Physics 2025-06-13 Emanuel Hubenschmid , Guido Burkard

Stellar intensity interferometry consists in measuring the correlation of the light intensity fluctuations at two telescopes observing the same star. The amplitude of the correlation is directly related to the luminosity distribution of the…

Instrumentation and Methods for Astrophysics · Physics 2025-10-27 William Guerin , Mathilde Hugbart , Sarah Tolila , Nolan Matthews , Olivier Lai , Jean-Pierre Rivet , G. Labeyrie , Robin Kaiser

We experimentally demonstrate a bright pulsed source of correlated photon pairs at 1550 nm telecom band by pumping 300 m dispersion shifted fiber with a 4 ps pulse train. We investigate the coherence property of the source by measuring the…

Quantum Physics · Physics 2009-11-13 Xiaoying Li , Lei Yang , Liang Cui , Zhe Yu Ou , Daoyin Yu

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

We measure the joint temporal intensity of signal and idler photon pairs generated by spontaneous four wave mixing in a silicon nitride microresonator by time-resolved coincidence detection. This technique can be applied to any high-Q…

Quantum Physics · Physics 2025-05-19 Massimo Borghi , Paula Lujan Pagano , Marco Liscidini , Daniele Bajoni , Matteo Galli