Generation of photons with all-optically reconfigurable entanglement in integrated nonlinear waveguides

Abstract

We predict that all-optically reconfigurable generation of photon pairs with tailored spatial entanglement can be realized via spontaneous parametric down-conversion in integrated nonlinear coupled waveguides. The required elements of the output quantum wavefunction are directly mapped from the amplitudes and phases of the classical laser pump inputs in each waveguide. This is achieved through special nonuniform domain poling, which locally inverts the sign of quadratic nonlinear susceptibility and accordingly shapes the interference of biphoton quantum states generated along the waveguides. We demonstrate a device configuration for the generation of any linear combination of two-photon Bell states.

14 pages, 8 figures

References in corpus (7)

• Silica-on-Silicon Waveguide Quantum Circuits
• Quantum walks of correlated particles
• Wave-front engineering by Huygens-Fresnel principle for nonlinear optical interactions in domain engineered structures
• Proposal for demonstrating the Hong-Ou-Mandel effect with matter waves
• Biphoton generation in quadratic waveguide arrays: A classical optical simulation
• Driven Quantum Walks
• Effect of loss on photon-pair generation in nonlinear waveguides arrays

Cited by in corpus (8)

• Photonic quantum information processing: a review
• Quantum photonics at telecom wavelengths based on lithium niobate waveguides
• Direct characterization of a nonlinear photonic circuit's wave function with laser light
• Information processing at the speed of light
• Phase resolved joint spectra tomography of a ring resonator photon pair source using a silicon photonic chip
• Quantum nonlinear metasurfaces
• Coupling quasi-phase matching: entanglement buildup in ${\chi }^{(2)}$ nonlinear waveguide arrays
• Reconfigurable cluster state generation in specially poled nonlinear waveguide arrays