Engineering topics
Publications and source records attributed to Nicholas D Hardy.
A quantum state analysis is applied to a potential architecture for entanglement distribution from space to asses several design choices and maximize the distribution rate while maintaining entanglement quality.
We investigate entanglement source synchronization using a forwarded-pump signal sent over a 3.2-km free-space retro-reflected link. Results show sub-picosecond alignment between the sources. The paper considers several fundamental and practical aspects of this approach.
Unheralded teleportation with Optical Bell State Measurements using SPDC sources are limited to 0.5 fidelity. Single photon emissions and non-destructive heralding from quantum memories overcomes this limit.
We designed and built two polarization entanglement sources optimized for high-rate quantum networking under pump power constraints. We demonstrated entanglement swapping between the sources.