Two-photon quantum state engineering in nonlinear photonic nanowires

Dongpeng Kang; Arthur Pang; Yuxiang Zhao; Amr S. Helmy

doi:10.1364/JOSAB.31.001581

Two-photon quantum state engineering in nonlinear photonic nanowires

Dongpeng Kang^*
, Arthur Pang
, Yuxiang Zhao
, Amr S. Helmy

^*Corresponding author for this work

University of Toronto

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

We propose and analyze a generic technique to engineer the two-photon quantum state generated by spontaneous parametric downconversion (SPDC) in nonlinear photonic nanowires using any suitable material system. Through dispersion engineering in nanowires, the group velocity of each photon involved in the SPDC process can be tuned such that pure heralded single photons or maximally polarization entangled photons can be directly generated on a chip. Implementations in III-V semiconductor and ferroelectric waveguides demonstrate minimal frequency correlations with Schmidt numbers of ∼1 for heralded single photons, and maximal entanglement with concurrences of ∼1 for polarization entangled photons.

Original language	English
Pages (from-to)	1581-1589
Number of pages	9
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	31
Issue number	7
DOIs	https://doi.org/10.1364/JOSAB.31.001581
State	Published - 1 Jul 2014
Externally published	Yes

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AU - Pang, Arthur

AU - Zhao, Yuxiang

AU - Helmy, Amr S.

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Y1 - 2014/7/1

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AB - We propose and analyze a generic technique to engineer the two-photon quantum state generated by spontaneous parametric downconversion (SPDC) in nonlinear photonic nanowires using any suitable material system. Through dispersion engineering in nanowires, the group velocity of each photon involved in the SPDC process can be tuned such that pure heralded single photons or maximally polarization entangled photons can be directly generated on a chip. Implementations in III-V semiconductor and ferroelectric waveguides demonstrate minimal frequency correlations with Schmidt numbers of ∼1 for heralded single photons, and maximal entanglement with concurrences of ∼1 for polarization entangled photons.

UR - https://www.scopus.com/pages/publications/84903706157

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JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

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Two-photon quantum state engineering in nonlinear photonic nanowires

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