Generation of maximally-polarization-entangled photons on a chip

Sergei V. Zhukovsky; Lukas G. Helt; Dongpeng Kang; Payam Abolghasem; Amr S. Helmy; J. E. Sipe

doi:10.1103/PhysRevA.85.013838

Generation of maximally-polarization-entangled photons on a chip

Sergei V. Zhukovsky^*, Lukas G. Helt, Dongpeng Kang, Payam Abolghasem, Amr S. Helmy, J. E. Sipe

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

We propose a method of generating maximally-polarization-entangled states by type-II spontaneous parametric down-conversion in Bragg reflection waveguides. Analytic expressions for the group velocities of down-converted modes are used to engineer zero group-velocity mismatch at the operating point, making the spectra of photons within a down-converted pair indistinguishable and thus leading to a maximally-polarization-entangled state. The results can be used for the creation and manipulation of polarization-entangled qubits entirely on a chip.

Original language	English
Article number	013838
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	85
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevA.85.013838
Publication status	Published - 25 Jan 2012
Externally published	Yes

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10.1103/PhysRevA.85.013838

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AU - Zhukovsky, Sergei V.

AU - Helt, Lukas G.

AU - Kang, Dongpeng

AU - Abolghasem, Payam

AU - Helmy, Amr S.

AU - Sipe, J. E.

PY - 2012/1/25

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AB - We propose a method of generating maximally-polarization-entangled states by type-II spontaneous parametric down-conversion in Bragg reflection waveguides. Analytic expressions for the group velocities of down-converted modes are used to engineer zero group-velocity mismatch at the operating point, making the spectra of photons within a down-converted pair indistinguishable and thus leading to a maximally-polarization-entangled state. The results can be used for the creation and manipulation of polarization-entangled qubits entirely on a chip.

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Generation of maximally-polarization-entangled photons on a chip

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