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arXiv:quant-ph/0412022 · Modern Physics Letters B

MULTIMODE HONG–OU–MANDEL INTERFEROMETRY

S. P. WALBORN, W. A. T. NOGUEIRA, A. N. de OLIVEIRA, S. PÁDUA, C. H. MONKEN

Published Jan 20, 2005• 8 citations
arXivHTMLPDF

Abstract

We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong–Ou–Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.

DOI
10.1142/s0217984905008050

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We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong–Ou–Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.
We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong-Ou-Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.
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Among the whole experiments using entangled pairs of photons, the famous experiment of two-photon interference known now as Hong-Ou-Mandel (HOM) interference, is probably one of the most fascinating. This ground-breaking experiment paved the way for a multitude of experiments showing the richness of the quantum properties of Spontaneous Parametric Down conversion (SPDC) and their applications to original communication protocols. Most of them use the coherence time property of a bi-photon state and measurement are mainly performed with bucket detectors and coincidence counters. While some studies report the spatial coherence of two-photon state, measurements are always performed in the temporal domain.
Abstract Since its initial discovery, Hong–Ou–Mandel (HOM) interference has been a key tool in quantum-optical experiments, being at the basis of several quantum technology applications as well as being a relevant characterisation method for the quality of single photon sources. In the context of quantum interferometry, further applications can be enabled by improving the capability of tailoring such effect. Here, we report a proof-of-principle experiment on a novel HOM control approach, based on spectrally shaping photons generated by parametric down conversion sources. By means of a pulse shaper operating on the pump beam in the Fourier plane, selected frequencies can be cut off from the down conversion process, therefore shaping the HOM interference profile. We finally discuss the obtained results towards employing the method for practical application in interferometry.