Please use this identifier to cite or link to this item:
|Title:||Joint spectrum mapping of polarization entanglement in spontaneous parametric down-conversion||Authors:||Poh, H.S.
|Issue Date:||26-Apr-2007||Citation:||Poh, H.S., Lum, C.Y., Marcikic, I., Lamas-Linares, A., Kurtsiefer, C. (2007-04-26). Joint spectrum mapping of polarization entanglement in spontaneous parametric down-conversion. Physical Review A - Atomic, Molecular, and Optical Physics 75 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.75.043816||Abstract:||Polarization-entangled photon pairs can be efficiently prepared into pure Bell states with a high fidelity via type-II spontaneous parametric down-conversion (SPDC) of narrow-band pump light. However, the use of femtosecond pump pulses to generate multiphoton states with precise timing often requires spectral filtering to maintain a high quality of polarization entanglement. This typically reduces the efficiency of photon pair collection. We experimentally map the polarization correlations of photon pairs from such a source over a range of down-converted wavelengths with a high spectral resolution and find strong polarization correlations everywhere. A spectrally dependent imbalance between contributions from the two possible decay paths of SPDC is identified as the reason for a reduction in entanglement quality observed with femtosecond pump pulses. Our spectral measurements allow us to predict the polarization correlations for arbitrary filter profiles when the frequency degree of freedom of the photon pairs is ignored. © 2007 The American Physical Society.||Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/115163||ISSN:||10502947||DOI:||10.1103/PhysRevA.75.043816|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 15, 2020
WEB OF SCIENCETM
checked on Jul 7, 2020
checked on Jul 11, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.