Brian P. Williams

Heuristic Search in Dual Space for Constrained Stochastic Shortest Path Problems

2016 · Proceedings of the International Conference on Automated Planning and Scheduling

We consider the problem of generating optimal stochastic policies for Constrained Stochastic Shortest Path problems, which are a natural model for planning under uncertainty for resource-bounded agents with multiple competing objectives. While unconstrained SSPs enjoy …

Quantum secret sharing with polarization-entangled photon pairs

2019 · Physical Review A

We describe and experimentally demonstrate a more practical three-party quantum secret sharing (QSS) protocol using polarization-entangled photon pairs. The source itself serves as an active participant and can switch between the required photon states by …

A Reconfigurable Quantum Local Area Network Over Deployed Fiber

2021 · Conference on Lasers and Electro-Optics

We demonstrate a three-node telecom quantum local area network over deployed fiber. It has eight independent entanglement channels which are dynamically reconfigurable. We successfully show entanglement demand balancing across the network and quantify its quality.