QSE Quantum Seminar: "Superposing coherent states for fun & profit"

Please join us for the QSE Center Quantum Seminar with Barry Sanders from the University of Calgary’s Quantum City who will give the talk "Superposing coherent states for fun & profit" on Thursday February 19 from 12pm to 1:30pm.
Location: CE 1 104

Pizzas will be available at 12:00. All PhDs, postdocs, students, group leaders, and PIs are welcome to join us.

TITLE: "Superposing coherent states for fun & profit"

ABSTRACT: 
Coherent states conveniently represent the classically meaningful wavelike states of light, as opposed to the corpuscular number states, but superposing coherent states is mind-bogglingly unclassical, including as examples "cat states", "comb states" and "compass states". I present a history of superposing coherent states, especially for oscillators (including electromagnetic field states) and for spin, and extend to entangled coherent states. I then show that superposed coherent states are a viable path for photonic quantum computing and for reaching towards the ultimate limits of sensing. Finally, I discuss our experimental realisations (at University of New South Wales) of superposed coherent states in a spin-7/2 Antimony nucleus in a silicon substrate.

BIO: 
Barry Sanders holds two Diplomas, a PhD, and a DSc from Imperial College London and is a Fellow of the Royal Society of Canada, Optica, the American Physical Society, and the UK Institute of Physics. He received the 2022 City of Calgary International Achievement Award and is best known for foundational contributions to quantum optics and quantum information science. His research focuses on quantum computing and quantum sensing and on strategy for emerging dual-use technologies.
Sanders is Scientific Director of the University of Calgary’s Quantum City, a Senior Fellow at the Canadian Centre for International Governance and Innovation, and a Visiting Scientist at CERN. Before returning to Calgary in 2003, he served as Head of Physics at Macquarie University in Sydney and held distinguished visiting research appointments internationally. He is an advisor for ventures and investors, CERN’s Open Quantum Institute, and the XPRIZE for applied quantum computing and he co-leads the Canada–France Quantum International Research Network, serves on four editorial boards, and has trained over one hundred graduate students and postdoctoral researchers.