Noise-robust transport and manipulation of photonic spatial mode entanglement
Mehul Malik, Heriot-Watt University
Quantum states of light entangled in high dimensions offer the potential for noise-robust quantum communication networks that harness the full information carrying capacity of a photon. A central challenge in the realisation of such networks is the ability to precisely control and reliably transport high-dimensional entangled states of light. In this talk, I will discuss the generation of high-dimensional “pixel” entanglement with fidelities exceeding 94% and entanglement dimensionalities up to 55. I will then present an experiment on the transport of entanglement through extreme regimes of noise and loss corresponding to 79km of optical fibre. Finally, I will discuss the manipulation of high-dimensional quantum states of light achieved via the inverse-design of programmable quantum circuits inside a commercial multi-mode fibre.
Toward Wide-Field-of-View and Large Area Optical Detectors for High-Speed Optical Wireless Communication
Abderrahmen Trichili, University of Oxford
Optical wireless communication (OWC) is able to provide high-throughput connectivity for 6G networks and beyond. A major limiting factor of the wide-scale deployment of OWC is the limited field of view (FoV) and small active areas of high-speed receivers, which derives strict pointing, acquisition, and tracking (PAT) requirements. This talk highlights the potential of designing large-area detectors with extended FoVs to ease PAT requirements for OWC systems.
A micromirror array- based streak camera for multi-channel, multi-spectral LIDAR
David Benton, Senior research fellow, Aston University
Micromirror arrays have found extensive use as spatial light modulators in consumer electronics within digital projectors. An underused quality of these devices is the speed with which they switch between binary positions of -12 degrees and + 12 degrees. With a simple camera we can make use of the transition between states to access temporal dispersion resulting in a novel LIDAR concept. In addition, the diffractive nature of the device enables simultaneous spectral dispersion to be obtained making the LIDAR multispectral. The free space nature of the device further enables separate input channels to be imaged thus multiple independent multispectral LIDARs can be interrogated in parallel. In this talk multiple lasers of different wavelengths have been used to demonstrate all these concepts with a result of temporal resolution 5 orders of magnitude faster than the device operating timescales.