Prof. Terry Rudolph
PsiQuantum (Palo Alto, CA, USA)
28th March 2022, 6:00pm - 7:00pm (GST)
Quantum Computing at the Speed of Light
Physical advantages to building a quantum computer out of optical frequency photons include: they suffer negligible environment decoherence even at room temperature, there is no cross talk, they network easily into arbitrary geometries, the relevant physics is not heuristic and is often both efficiently simulatable and verifiable with classical light, and measurements - the critical element for entropy reduction to achieve fault tolerance - are sharp and extremely fast. However these pale in comparison to the engineering advantages: all parts of the machine can be built in a tier-1 foundry, and packaged in the same back-end-of-line processes used to build laptops and cellphones. Thus with photons we can realistically stare down the sorts of numbers (~1 million qubits) which capture the size of machine required to do useful quantum computation.
Prof. Rudolph got his PhD from the University of Toronto in 1998. He was then a lecturer at the same university, then postdoc in Viena, then researcher at Bell Labs, and eventually moved to Imperial College London, where he became a Professor of Quantum Physics in 2016. He is a world-wide authority in quantum information and computation theory. He has co-authored over 160 research articles and wrote the popular book “Q is for quantum”. In 2016, he co-founded the Silicon Valley based company PsiQuantum to build photonic quantum computers, which is currently one of the largest quantum-computing start-up in the world in terms of market value.