Generating path entangled states in waveguide systems with second-order nonlinearity
Belsley A, Pertsch T, Setzpfandt F (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 28
Pages Range: 28792-28809
Article Number: 401303
Journal Issue: 20
DOI: 10.1364/OE.401303
Abstract
Spontaneous parametric down-conversion in coupled nonlinear waveguides is a flexible approach for generating tunable path entangled states. We describe a formalism based on the Cayley-Hamilton theorem to compute the quantum states generated by waveguide arrays for arbitrary system parameters. We find that all four Bell states can be generated in directional couplers with non-degenerate photons. Our method enables one to efficiently explore the phase space of waveguide systems and readily assess the robustness of any given state to variations in the system's parameters. We believe it represents a valuable tool for quantum state engineering in coupled waveguide systems.
Involved external institutions
Germany (DE)How to cite
APA:
Belsley, A., Pertsch, T., & Setzpfandt, F. (2020). Generating path entangled states in waveguide systems with second-order nonlinearity. Optics Express, 28(20), 28792-28809. https://doi.org/10.1364/OE.401303
MLA:
Belsley, Alexandre, Thomas Pertsch, and Frank Setzpfandt. "Generating path entangled states in waveguide systems with second-order nonlinearity." Optics Express 28.20 (2020): 28792-28809.
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