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Technical Physics

The collapse paradigm : a HBT - type experiment proposed

Artur Szczepański

Published Jan 1, 1999• 0 citations
OpenAlex

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Hanbury Brown & Twiss (HBT) type measurements in quantum optics experiments

Sébastien Tanzilli

Quantum opticians usually employ and exploit genuine or modified HBT setups as standard tools for characterizing non-classical states of light. One the one hand, HBT measurements permit to characterize the emission statistics of photonic modes that are, depending on the emitter and on the spatial and spectral features, thermal, poissonnian, sub-poissonnian, or deterministic. On the other hand, auto-correlation and cross-correlation functions, recorded in the single photon counting regime, permit to infer the unique properties of single photon and two photons sources, that are further utilized in quantum communication applications. For instance, when applied to a single photon source, a genuine HBT setup helps qualifying the uniqueness emission feature. Moreover, when applied to a two photon source, a modified HBT setup permits measuring simultaneous emission time correlations, as well as single photon coherence time. During this talk, I will review some situations in which HBT type setups and related measurements are exploited in and for quantum optics or communication experiments.

•May 12, 2014•0 citations

Random Holography: Generating EPR‐Like Correlation with Thermal Photons

Zhiyuan Ye, Wanting Hou, Chen‐Xin Ding +6 more

Abstract Entanglement and correlation of photons play a central role in quantum information and communication. There are two types of photon correlations: one usually exists in a two‐particle entangled state first conceived by Einstein, Podolsky, and Rosen (EPR) in 1935, while the other occurs in a thermal light source found by Hanbury Brown and Twiss (HBT) in 1956. Many studies are concerned with the physical nature and differences behind the two types of photon correlations. Here, a holography‐inspired linear optical system that generates a pair of conjugate chaotic beams is proposed, which include both HBT‐type and EPR‐like correlations. From principle to experimental generation, the study presents a classical paradigm of a simple bi‐correlation light source for diverse quantum‐mimic applications such as two‐photon imaging.

Laser & Photonics Review•Dec 18, 2024•13 citations

The Spontaneous Collapse Theory

Travis Norsen

Undergraduate lecture notes in physics•Jan 1, 2017•0 citations
Quantum opticians usually employ and exploit genuine or modified HBT setups as standard tools for characterizing non-classical states of light. One the one hand, HBT measurements permit to characterize the emission statistics of photonic modes that are, depending on the emitter and on the spatial and spectral features, thermal, poissonnian, sub-poissonnian, or deterministic. On the other hand, auto-correlation and cross-correlation functions, recorded in the single photon counting regime, permit to infer the unique properties of single photon and two photons sources, that are further utilized in quantum communication applications. For instance, when applied to a single photon source, a genuine HBT setup helps qualifying the uniqueness emission feature. Moreover, when applied to a two photon source, a modified HBT setup permits measuring simultaneous emission time correlations, as well as single photon coherence time. During this talk, I will review some situations in which HBT type setups and related measurements are exploited in and for quantum optics or communication experiments.
Abstract Entanglement and correlation of photons play a central role in quantum information and communication. There are two types of photon correlations: one usually exists in a two‐particle entangled state first conceived by Einstein, Podolsky, and Rosen (EPR) in 1935, while the other occurs in a thermal light source found by Hanbury Brown and Twiss (HBT) in 1956. Many studies are concerned with the physical nature and differences behind the two types of photon correlations. Here, a holography‐inspired linear optical system that generates a pair of conjugate chaotic beams is proposed, which include both HBT‐type and EPR‐like correlations. From principle to experimental generation, the study presents a classical paradigm of a simple bi‐correlation light source for diverse quantum‐mimic applications such as two‐photon imaging.