Joint spectrum of photon pairs measured by coincidence Fourier spectroscopy

Optics Letters
Wojciech WasilewskiCzesław Radzewicz

Abstract

We propose and demonstrate a method for measuring the joint spectrum of photon pairs via Fourier spectroscopy. The biphoton spectral intensity is computed from a two-dimensional interferogram of coincidence counts. The method has been implemented for a type-I downconversion source using a pair of common-path Mach-Zehnder interferometers based on Soleil compensators. The experimental results agree well with calculated frequency correlations that take into account the effects of coupling into single-mode fibers. The Fourier method is advantageous over scanning spectrometry when detectors exhibit high dark count rates leading to dominant additive noise.

References

Jul 27, 2001·Nature·V GiovannettiL Maccone
Oct 4, 2003·Physical Review Letters·Magued B NasrMalvin C Teich
Mar 11, 2005·Nature·P WaltherA Zeilinger
Nov 1, 1976·Applied Optics·M H Tai, M Harwit

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Citations

Nov 21, 2014·Nature Communications·Ranjeet KumarShayan Mookherjea
May 8, 2015·Scientific Reports·Heonoh KimHan Seb Moon
Jul 1, 2010·Optics Express·G BridaT Sh Iskhakov
Sep 17, 2009·Optics Letters·Malte AvenhausChristine Silberhorn
Aug 7, 2021·Physical Review Letters·Vindhiya PrakashMorgan W Mitchell

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