skip to main content

SciTech ConnectSciTech Connect

Title: MEASURING TEMPORAL PHOTON BUNCHING IN BLACKBODY RADIATION

Light from thermal blackbody radiators such as stars exhibits photon bunching behavior at sufficiently short timescales. However, with available detector bandwidths, this bunching signal is difficult to observe directly. We present an experimental technique to increase the photon bunching signal in blackbody radiation via spectral filtering of the light source. Our measurements reveal strong temporal photon bunching from blackbody radiation, including the Sun. This technique allows for an absolute measurement of the photon bunching signature g {sup (2)}(0), and thereby a direct statement on the statistical nature of a light source. Such filtering techniques may help revive the interest in intensity interferometry as a tool in astronomy.
Authors:
; ;  [1] ; ;  [2]
  1. Center for Quantum Technologies, 3 Science Drive 2, 117543 (Singapore)
  2. Department of Physics, National University of Singapore, 2 Science Drive 3, 117551 (Singapore)
Publication Date:
OSTI Identifier:
22365751
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 789; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; BLACKBODY RADIATION; FILTERS; INTERFEROMETERS; INTERFEROMETRY; PHOTONS; RADIATORS; SUN; VISIBLE RADIATION