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Title: Towards a High Quality Polarization-Entangled Multi-photon Source
Keywords: multi-photon, polarization-entanglement, spectral compensation , spectral distinguishability, spin-1 bell inequalities, ultra-fast down-conversion
Issue Date: 31-Jul-2009
Citation: POH HOU SHUN (2009-07-31). Towards a High Quality Polarization-Entangled Multi-photon Source. ScholarBank@NUS Repository.
Abstract: Generation of polarization-entangled photon pairs with a precise timing through down-conversion of femtosecond pulses is often faced with a degraded polarization entanglement quality. This degradation is induced by spectral distinguishability between the two decay paths, in accordance with theoretical predictions. In this thesis, I present an experimental study of the spectral compensation scheme proposed and first implemented by Kim et. al. [Y.-H Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002) ]. By measuring the joint spectral properties of the polarization correlations of the photon pairs, we show that the spectral distinguishability between the down-converted components is eliminated. This scheme results in a visibility of 97.9 ± 0.5% in the complementary polarization basis without any spectral filtering.
Appears in Collections:Master's Theses (Open)

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