Characterization of Entanglement Photons Generated by a Spontaneous Parametric Down-Conversion Pulse Source

Authors

  • Ekkasit Sakatok National Electronics and Computer Technology Center, 112 Paholyothin Rd., Klong Luang, Pathum Thani 12120, Thailand.
  • Surasak Chiangga Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.

Keywords:

entanglement, parametric down-conversion, Bell inequality, quantum communication

Abstract

Quantum computation and quantum communication require sources of entangled photons, especially from low-cost diode lasers. This study considered a polarization entangled photons pulse source produced via a spontaneous parametric down-conversion process in the type-I phase-matching of two nonlinear crystals, incorporating a continuous wave laser diode operating in pulse mode as a pump. The generated photons were measured based on visibility as a function of the pump frequency and collection apertures. A polarization correlation between photon pairs of approximately 93% and a Bell parameter S value of 2.56 ± 0.05 were obtained using the source described here. 

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Published

2011-02-28

How to Cite

Ekkasit Sakatok, and Surasak Chiangga. 2011. “Characterization of Entanglement Photons Generated by a Spontaneous Parametric Down-Conversion Pulse Source”. Agriculture and Natural Resources 45 (1). Bangkok, Thailand:172-76. https://li01.tci-thaijo.org/index.php/anres/article/view/245147.

Issue

Vol. 45 No. 1 (2011): January-February

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.