Spectroscopy by frequency entangled photon pairs

Details Spectroscopy by frequency entangled photon pairs Spectroscopy by frequency entangled photon pairs

2003-06-23

arxiv.org/abs/quant-ph/0306154v4

Phys. Rev. A 69, 013806 (2004)

Physics

Quantum Physics

11 pages, 5 figures, to be published in Phys. Lett. A

Scientific paper

10.1103/PhysRevA.69.013806

Quantum spectroscopy was performed using the frequency-entangled broadband photon pairs generated by spontaneous parametric down-conversion. An absorptive sample was placed in front of the idler photon detector, and the frequency of signal photons was resolved by a diffraction grating. The absorption spectrum of the sample was measured by counting the coincidences, and the result is in agreement with the one measured by a conventional spectrophotometer with a classical light source.

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