Politi, Alberto

Monday July 4, 2011
Time: 14:00
Place: HPF G 6
Host: Atac Imamoglu

Photonic structures for quantum information science

Alberto Politi
University of Bristol, UK

Until recently, quantum photonic architecture comprised large-scale (bulk) optical elements, leading to severe limitations in miniaturization, scalability and stability. We developed the first integrated quantum optical circuitry, demonstrating high-fidelity silica-on-silicon integrated optical realizations of key quantum photonic circuits, including two-photon quantum interference and a controlled-NOT gate. We use these devices to demonstrate multi-photon effects relevant to quantum metrology and quantum information processing. We also show quantum experiments that take advantage of the unique properties of integrated photonics:we demonstrate non-classical interference in multi-mode interference (MMI) multi-port devices, and a quantum walk experiment with more than one particle which shows uniquely non-classical properties.