Spectroscopy by frequency-entangled photon pairs

Atsushi Yabushita*, Takayoshi Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


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.

Original languageEnglish
Article number013806
Pages (from-to)1-4
Number of pages4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
StatePublished - 14 Jan 2004


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