Karsten Rottwitt

TL;DR: A multidimensional integrated quantum photonic platform able to generate, control, and analyze high-dimensional entanglement is demonstrated, and a programmable bipartite entangled system is realized with dimensions up to 15 × 15 on a large-scale silicon photonics quantum circuit.

Abstract: A design for a 100-nm bandwidth Raman amplifier is presented. The amplifier is pumped with eight, 130-mW lasers with wavelengths ranging from 1416 to 1502 nm. The peak-to-peak gain ripple is 1.1 dB. A new model was developed for this design that includes pump-to-pump and signal-to-signal interactions in addition to double Rayleigh scattering and amplified spontaneous emission. An understanding of the interactions among these various effects was essential to this design. These modeling results are based on measurements of the physical characteristics of the transmission fiber.

TL;DR: In this paper, a programmable bipartite entangled system with dimension up to 15 × 15$ on a large-scale silicon-photonics quantum circuit is presented, which can robustly generate, control and analyze high-dimensional entanglement.

TL;DR: In this paper, a high-dimensional quantum key distribution protocol based on space division multiplexing in multicore fiber using silicon photonic integrated lightwave circuits was proposed and experimentally demonstrated.

TL;DR: In this article, a chip-to-chip quantum teleportation and genuine multipartite entanglement were demonstrated on silicon-photonic circuitry, where four single photons with high purity and indistinguishablity were produced in an array of microresonator sources, without requiring any spectral filtering.