Generation of Tunable Three-Photon Entanglement in Cubic Nonlinear Coupled Waveguides
arXiv:2411.07491 · doi:10.1002/qute.202400409
Abstract
We theoretically investigate the generation of three-photon states with spatial entanglement in cubic nonlinear coupled waveguides using third-order spontaneous parametric down-conversion and quantum walks. Our approach involves independently pumping two coupled waveguides to generate a path-encoded three-photon Greenberger Horne Zeilinger (GHZ) state, which then evolves with complex spatial dynamics governed by coupling coefficients and phase mismatch. By appropriate parameter tuning, we demonstrate the generation of robust heralded Bell states, uniform states, and GHZ-like states at the chip output. This work demonstrates an integrated source of three-photon spatial entanglement on a simple chip, offering additional reconfigurability for advanced multiphoton quantum applications.
References in corpus (23)
- Integrated Photonic Quantum Technologies
- Universal Linear Optics
- Observation of three-photon Greenberger-Horne-Zeilinger entanglement
- Nonlinear metasurfaces governed by bound states in the continuum
- Progress in satellite quantum key distribution
- Spontaneous parametric down-conversion
- PPLN Waveguide for Quantum Communication
- Quantum teleportation on a photonic chip
- Direct generation of three-photon polarization entanglement
- Spontaneous photon-pair generation at the nanoscale
- Chi2 and chi3 harmonic generation at a critical power in inhomogeneous doubly resonant cavities
- Quantum Photonic Interconnect
- Any Quantum Network is Structurally Controllable by a Single Driving Signal
- On-chip coherent conversion of photonic quantum signals between different degrees of freedom
- Spontaneous Parametric Down-Conversion and Quantum Walks in Arrays of Quadratic Nonlinear Waveguides
- Titanium:Sapphire-on-insulator for broadband tunable lasers and high-power amplifiers on chip
- Tripartite Genuine Non-Gaussian Entanglement in Three-Mode Spontaneous Parametric Downconversion
- Tunable generation of entangled photons in a nonlinear directional coupler
- Biphoton generation in quadratic waveguide arrays: A classical optical simulation
- Towards third-order parametric down-conversion in optical fibers
- Integrated Photonic Platforms for Quantum Technology: A Review
- Seeded and unseeded high order parametric down conversion
- Resonant and non-resonant integrated third order parametric down-conversion