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We introduce and describe a technique for distance sensing, based on second-order interferometry of thermal light. The method is based on measuring correlation between intensity fluctuations on two detectors, and provides estimates of the…

We consider ramifications of the use of high speed light modulators to questions of correlation and measurement of time-energy entangled photons. Using phase modulators, we find that temporal modulation of one photon of an entangled pair,…

Quantum Physics · Physics 2009-11-13 S. E. Harris

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

In the framework of the signal processing approach to single-atom resonance fluorescence with spectral resolution, we diagrammatically derive an analytical formula for arbitrary-order spectral correlation functions of the scattered fields…

Quantum Physics · Physics 2016-09-21 Vyacheslav N. Shatokhin , Sergei Ya. Kilin

We measure multi-time correlation functions of a set of Pauli operators on a two-level system, which can be used to retrieve its associated linear response functions. The two-level system is an effective spin constructed from the nuclear…

Quantum Physics · Physics 2017-10-30 Tao Xin , Julen S. Pedernales , Lucas Lamata , Enrique Solano , Gui-Lu Long

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…

The anisotropic 2-point correlation function (2PCF) of galaxies measures pairwise clustering as a function of the pair separation's angle to the line of sight. The latter is often defined as either the angle bisector of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-19 Zachary Slepian , Daniel J. Eisenstein

Among the best known quantities obtainable from photon correlation measurements are the $g^{(m)}$~correlation functions. Here, we introduce a new procedure to evaluate these correlation functions based on higher-order factorial cumulants…

Mesoscale and Nanoscale Physics · Physics 2022-05-24 Philipp Stegmann , Satyendra Nath Gupta , Gilad Haran , Jianshu Cao

We present temporal intensity correlation measurements of light scattered by a hot atomic vapor. Clear evidence of photon bunching is shown at very short time-scales (nanoseconds) imposed by the Doppler broadening of the hot vapor.…

Atomic Physics · Physics 2016-06-01 A. Dussaux , T. Passerat de Silans , W. Guerin , O. Alibart , S. Tanzilli , F. Vakili , R. Kaiser

Second order intensity correlations of speckle illumination are extensively used in imaging applications that require going beyond the Rayleigh limit. The theoretical analysis shows that significantly improved imaging can be extracted from…

Optics · Physics 2019-12-03 Fu Li , Charles Altuzarra , Tian Li , M. O. Scully , G. S. Agarwal

We investigate the connection between thermal light and coherent pulses, constructing mixtures of single pulses that yield the same first-order, equal-space-point correlation function as thermal light. We present mixtures involving (i)…

Quantum Physics · Physics 2015-10-28 Aurélia Chenu , Agata M. Brańczyk , J. E. Sipe

We have observed the three-photon correlation in nonclassical light sources by using an indirect measurement scheme based on the dead time effect of photon-counting detectors. We first developed a general theory which enables us to extract…

Quantum Physics · Physics 2016-08-30 Byoung-Moo Ann , Younghoon Song , Junki Kim , Daeho Yang , Kyungwon An

During the last decades, multi-pixel detectors have been developed capable of registering single photons. The newly developed Hybrid Photon Detector camera has a remarkable property that it has not only spatial but also temporal resolution.…

The feasibility of measuring high-order current correlators by means of a linear detector is analyzed. Two different types of measurements are considered: measurement of fluctuation power spectrum and measurement of unequal-time current…

Mesoscale and Nanoscale Physics · Physics 2009-06-03 K. V. Bayandin , A. V. Lebedev , G. B. Lesovik

Images of semiconductor `dot in rods' and their small clusters are studied by measuring the second-order correlation function with a spatially resolving ICCD camera. This measurement allows one to distinguish between a single dot and a…

An important topic of interest in imaging is the construction of protocols that are not diffraction limited. This can be achieved in a variety of ways, including classical superresolution techniques or quantum entanglement-based protocols.…

Quantum Physics · Physics 2015-10-28 Mark E. Pearce , Thomas Mehringer , J. von Zanthier , Pieter Kok

Derivation of the procedures that can be applied in evaluating two-time correlation function in terms of coherent-state propagator and corresponding Q-function is presented. On the basis that the involved functions are generally exponential…

Quantum Physics · Physics 2009-10-16 Sintayehu Tesfa

Twin entangled beams produced by single-pass parametric down-conversion (PDC) offer the opportunity to detect weak amount of absorption with an improved sensitivity with respect to standard techniques which make use of classical light…

Quantum Physics · Physics 2009-11-13 E. Brambilla , L. Caspani , O. Jedrkiewicz , L. A. Lugiato , A. Gatti

We introduce pulsed correlation time-of-flight (PC-ToF) sensing, a new operation mode for correlation time-of-flight range sensors that combines a sub-nanosecond laser pulse source with a rectangular demodulation at the sensor side. In…

Image and Video Processing · Electrical Eng. & Systems 2019-09-09 Sebastian Werner , Henrik Schäfer , Matthias Hullin

We present the generalization of recently introduced observables for the studies of correlated fluctuations of different anisotropic flow amplitudes, dubbed Symmetric Cumulants. We introduce a new set of higher order observables and outline…

Nuclear Experiment · Physics 2020-08-19 Cindy Mordasini , Ante Bilandzic , Deniz Karakoç , Seyed Farid Taghavi