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We present the first study of the statistics of GHz photons in quantum circuits, using Hanbury-Brown and Twiss correlations. The superpoissonian and poissonian photon statistics of thermal and coherent sources respectively made of a…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Julien Gabelli , Laure-Helene Reydellet , Gwendal Feve , Jean-Marc Berroir , Bernard Placais , Patrice Roche , Christian Glattli

We introduce a microwave bolometer aimed at high-quantum-efficiency detection of wave packet energy within the framework of circuit quantum electrodynamics, the ultimate goal being single microwave photon detection. We measure the…

Mesoscale and Nanoscale Physics · Physics 2014-09-11 J. Govenius , R. E. Lake , K. Y. Tan , V. Pietilä , J. K. Julin , I. J. Maasilta , P. Virtanen , M. Möttönen

Measuring the statistical correlations of individual quantum objects provides an excellent way to study complex quantum systems. Ultracold molecules represent a powerful platform for quantum science due to their rich and controllable…

We describe a technique to measure photon pair joint spectra by detecting the time-correlation beat note when non-degenerate photon pairs interfere at a beamsplitter. The technique implements a temporal analog of the Ghosh-Mandel effect…

Quantum Physics · Physics 2021-07-28 Vindhiya Prakash , Aleksandra Sierant , Morgan W. Mitchell

Interference at a beam splitter reveals both classical and quantum properties of electromagnetic radiation. When two indistinguishable single photons impinge at the two inputs of a beam splitter they coalesce into a pair of photons…

Quantum Physics · Physics 2013-06-21 C. Lang , C. Eichler , L. Steffen , J. M. Fink , M. J. Woolley , A. Blais , A. Wallraff

Creating a train of single photons and monitoring its propagation and interaction is challenging in most physical systems, as photons generally interact very weakly with other systems. However, when confining microwave frequency photons in…

In low background and low threshold particle astrophysics experiments using observation of Cherenkov or scintillation light it is common to use pairs or arrays of photomultipliers operated in coincidence. In such circumstances, for instance…

Instrumentation and Detectors · Physics 2009-06-23 M. Robinson , P. K. Lightfoot , M. J. Carson , V. A. Kudryavtsev , N. J. C. Spooner

We show that the essential physics of the Hanbury Brown-Twiss (HBT) and the thermal light ghost imaging experiments is the same, i.e., due to the intensity fluctuations of the thermal light. However, in the ghost imaging experiments, a…

Optics · Physics 2009-11-13 Li-Gang Wang , Sajid Qamar , Shi-Yao Zhu , M. Suhail Zubairy

The calorimeter, range detector and active target elements of the T2K near detectors rely on the Hamamatsu Photonics Multi-Pixel Photon Counters (MPPCs) to detect scintillation light produced by charged particles. Detailed measurements of…

Infrared heterodyne interferometry has been proposed as a practical alternative for recombining a large number of telescopes over kilometric baselines in the mid-infrared. However, the current limited correlation capacities impose strong…

Instrumentation and Methods for Astrophysics · Physics 2020-07-08 Guillaume Bourdarot , Hugues Guillet de Chatellus , Jean-Philippe Berger

The Hanbury Brown--Twiss effect is one of the celebrated phenomenologies of modern physics that accommodates equally well classical (interferences of waves) and quantum (correlations between indistinguishable particles) interpretations. The…

Two particle correlation data from the Relativistic Heavy Ion Collider have provided detailed femtoscopic information describing the space-time structure of the emission of pions. This data had avoided description with hydrodynamic-based…

Nuclear Theory · Physics 2009-07-22 Scott Pratt

Multi-photon correlations from quantum emitters coupled to vibrational environments lie beyond the reach of standard tools such as the quantum regression theorem (QRT). Here, we introduce a Markovian framework for computing…

Quantum Physics · Physics 2026-03-17 Mateusz Salamon , Oliver Dudgeon , Ahsan Nazir , Jake Iles-Smith

Correlations are important tools in the characterization of quantum fields. They can be used to describe statistical properties of the fields, such as bunching and anti-bunching, as well as to perform field state tomography. Here we analyse…

Quantum Physics · Physics 2010-12-07 Marcus P. da Silva , Deniz Bozyigit , Andreas Wallraff , Alexandre Blais

Photo-assisted transport through a mesoscopic conductor occurs when an oscillatory (AC) voltage is superposed to the constant (DC) bias which is imposed on this conductor. Of particular interest is the photo assisted shot noise, which has…

Mesoscale and Nanoscale Physics · Physics 2010-11-18 Denis Chevallier , Thibaut Jonckheere , Elisabetta Paladino , Giuseppe Falci , Thierry Martin

We present an improved and extended analysis of the cross-correlation between the map of the Cosmic Microwave Background (CMB) lensing potential derived from the \emph{Planck} mission data and the high-redshift galaxies detected by the…

By exploiting the quantised nature of light, we demonstrate a sub-shot-noise scanning optical transmittance microscope. Our microscope demonstrates, with micron scale resolution, a factor of improvement in precision of 1.76(9) in…

In Stage-IV imaging surveys, a significant amount of the cosmologically useful information is due to sources whose images overlap with those of other sources on the sky. The cosmic shear signal is primarily encoded in the estimated shapes…

Cosmology and Nongalactic Astrophysics · Physics 2021-08-04 Javier Sanchez , Ismael Mendoza , David P. Kirkby , Patricia R. Burchat

We develop a method for calculating the correlation structure of the Cosmic Microwave Background (CMB) using Feynman diagrams, when the CMB has been modified by gravitational lensing, Faraday rotation, patchy reionization, or other…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Elizabeth E. Jenkins , Aneesh V. Manohar , Wouter J. Waalewijn , Amit P. S. Yadav

Optical transitions in a semiconductor quantum dot are theoretically investigated, with emphasis on the coupling to longitudinal optical phonons, and including excitonic effects. When limiting to a finite number of $m$ electron and $n$ hole…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 T. Stauber , R. Zimmermann