2017/03/31 by A. Schlager, B. Pressl, K. Laiho +5 · 16 citations
Computer Science · Physics and Astronomy · #Bragg's law #Broadband #Coherence (philosophical gambling strategy) #Coherence theory #Neural Networks and Reservoir Computing #Parametric statistics #Photon #Polarization (electrochemistry) #Quantum Information and Cryptography #Quantum entanglement #Quantum optics and atomic interactions #Reflection (computer programming) #quant-ph
paper · pdf · doi:10.1364/ol.42.002102
published in Optics Letters 42(11), 2102 (Optica Publishing Group) · 5 pages, 4 figures
openalex created_date 2017/03/16 · openalex publication_date 2017/05/19 · arxiv created 2017/05/24 · arxiv updated 2017/05/25 · openalex updated_date 2026/08/05
Bragg reflection waveguides emitting broadband parametric downconversion (PDC) have been proven to be well suited for the on-chip generation of polarization entanglement in a straightforward fashion [Sci. Rep.3, 2314 (2013)SRWSDA2045-232210.1038/srep02314]. Here, we investigate how the properties of the created states can be modified by controlling the relative temporal delay between the pair of photons created via PDC. Our results offer an easily accessible approach for changing the coherence of the polarization entanglement, in other words, to tune the phase of the off-diagonal elements of the density matrix. Furthermore, we provide valuable insight into the engineering of these states directly at the source.