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The coherence of light from independent ensembles of elementary atomic emitters plays a paramount role in diverse areas of modern optics. We demonstrate the interference of photons scattered from independent ensembles of warm atoms in…

Quantum Physics · Physics 2026-02-19 Jaromír Mika , Stuti Joshi , Lukáš Lachman , Robin Kaiser , Lukáš Slodička

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

Atom and matter interferometers are precise quantum sensing experiments that can probe differential forces along separated spacetime paths. Various atom and matter interferometer experiments have been proposed to study dark matter,…

Quantum Physics · Physics 2024-09-10 Yufeng Du , Clara Murgui , Kris Pardo , Yikun Wang , Kathryn M. Zurek

We theoretically analyze the observations reported in a four-path quantum interference experiment via multiple beam Ramsey interference [Phys. Rev. Lett. 86, 559 (2001)]. In this experiment, a selective scattering of photons from just one…

Quantum Physics · Physics 2019-11-06 Sandeep Mishra , Anu Venugopalan , Tabish Qureshi

By engineering and manipulating quantum entanglement between incoming photons and experimental apparatus, we construct single-photon detectors which cannot distinguish between photons of very different wavelengths. These color erasure…

We demonstrate a method for characterizing the coherence function of coherent states based on two-photon interference. Two states from frequency mismatched faint laser sources are fed into a Hong-Ou-Mandel interferometer and the…

We show that a recently discussed apparatus for aberration-cancelled interferometry may be modified to perform correlated-photon imaging in the so-called "ghost" imaging configuration. For objects in the vicinity of a particular plane, the…

Quantum Physics · Physics 2010-06-18 D. S. Simon , A. V. Sergienko

Quantitative characterization of the spatial structure of single photons is essential for free-space quantum communication and quantum imaging. We introduce an interferometric technique that enables the complete characterization of a…

Quantum Physics · Physics 2021-08-04 Wiktor Szadowiak , Sanjukta Kundu , Jerzy Szuniewicz , Radek Lapkiewicz

Integrating a foreground object into a background scene with illumination harmonization is an important but challenging task in computer vision and augmented reality community. Existing methods mainly focus on foreground and background…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Zhongyun Bao , Chengjiang Long , Gang Fu , Daquan Liu , Yuanzhen Li , Jiaming Wu , Chunxia Xiao

Recent experiments (Angew. Chem. Int. Ed. 50, 2085 (2011)) have demonstrated that the optical transmission through an array of subwavelength holes in a metal film can be enhanced by the intentional presence of dyes in the system. As the…

Mesoscale and Nanoscale Physics · Physics 2014-07-02 Sergio G. Rodrigo , F. J. García-Vidal , L. Martín-Moreno

We present a quantum optical scheme for imaging transversely displaced thermal sources of arbitrary intensities by employing multiphoton interference with a reference single-photon Fock state at a beamsplitter. Obtaining an analytical form…

Quantum Physics · Physics 2026-02-24 Aiman Khan , Danilo Triggiani , Vincenzo Tamma

Proposed, justified and tested measuring of beam spatial coherence, based on the detection of an interference visibility of the equal to intensity of beam replicas emerging under reflection from the rotated plane-parallel plate. The method…

Optics · Physics 2015-10-20 E. A. Tikhonov , A. K. Lyamets

The quantum interference of two wavelength-entangled photons overlapping at a beamsplitter results in an oscillating interference pattern. The frequency of the beat note is dependent on the wavelength separation of the entangled photons but…

Quantum Physics · Physics 2023-09-12 Cyril Torre , Alex McMillan , Jorge Monroy-Ruz , Jonathan C. F. Matthews

We investigate how the temporal coherence interference properties of light in a Michelson-Morley interferometer (MMI), using only a single-photon detector, can be understood in a quantum-optics framework in a straightforward and pedagogical…

Quantum Physics · Physics 2011-03-03 O. Langangen , B. -S. Skagerstam , A. Vaskinn

The Hong-Ou-Mandel (HOM) effect, an effective two-photon interference phenomenon, is a cornerstone of quantum optics and a key tool for linear optical quantum information processing. While the HOM effect has been extensively studied both…

Quantum Physics · Physics 2025-01-28 Tareq Jaouni , Xuemei Gu , Mario Krenn , Alessio D'Errico , Ebrahim Karimi

Hong-Ou-Mandel (HOM) interferometry with entangled photons exhibits distinctive quantum features. By introducing frequency entanglement (discrete-color entangled states) into HOM interference, the characteristic HOM dip is modulated by…

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

In classical optical interferometry, loss and background complicate achieving fast nanometer-resolution measurements with illumination at low light levels. Conversely, quantum two-photon interference is unaffected by loss and background,…

Electromagnetically induced transparency has the unique ability to optically control transparency windows with low light in atomic systems. However, its practical applications in quantum physics and information science are limited due to…

The Hong-Ou-Mandel (HOM) effect is a hallmark of nonclassical two-photon interference. This paper develops a unified theory-numerics framework to compute angle-resolved far-field two-photon correlations from arbitrary lossless dielectric…

Quantum Physics · Physics 2026-04-22 Chengnian Huang , Hangyu Ge , Yijia Cheng , Zi He , Feng Liu , Wei E. I. Sha