Back Efecte Hanbury Brown i Twiss Catalan Photon Bunching German Efecto Hanbury Brown y Twiss Spanish Effetto Hanbury Brown e Twiss Italian 汉伯里·布朗及特维斯效应 Chinese
In physics, the Hanbury Brown and Twiss (HBT) effect is any of a variety of correlation and anti-correlation effects in the intensities received by two detectors from a beam of particles. HBT effects can generally be attributed to the wave–particle duality of the beam, and the results of a given experiment depend on whether the beam is composed of fermions or bosons. Devices which use the effect are commonly called intensity interferometers and were originally used in astronomy, although they are also heavily used in the field of quantum optics.