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DWC Seminar Series 2017

20 September 2017

The Dodd-Walls Centre is proud to present a series of seminars hosted by our themes on different topics and everyone is welcome to attend.   Friday’s Quantum Manipulation and Information (QMI) seminar is presented by Prof  Howard Carmichael, Physics Department, University of Auckland.


Title:          An Open Systems Framework to Link Optical Resonators and Superconducting Circuits

When:          Friday 22 September, 12 noon (sharp) to 1.00pm

Venues:         DWC Boardroom 320e, Dodd-Walls Centre, Science III, University of Otago

                      303.411 Auckland

                      Anyone can join remotely via Zoom Meeting ID # 325 816 342 


Although the physics of electromagnetic radiation is explored in the optical and microwave domains using entirely different experimental tools, a surprising commonality has emerged at the theoretical and conceptual level, through recent experiments with superconducting circuits and their links to quantum optics [1-6]. In one sense, the development can be seen as a return to beginnings considering that the optical intensity interferometer from the 1950s (Hanbury Brown and Twiss effect) was a carryover from Robert Hanbury Brown’s involvement with radar and radio astronomy. In this regard, it is interesting to recall the reaction to his proposal with Richard Twiss [7]: “Our work really put the cat amongst the pigeons. The basic problem was that you can think about light in two different ways, as a wave and as particles … to a surprising number of people the idea that the arrival of photons at two different detectors can ever be correlated was not only heretical it was patently absurd, and they told us so in no uncertain terms … If science had a Pope we would have been excommunicated.”. In this tutorial I will review the modern ground that puts any perceived dichotomy between microWAVES and optical PHOTONS (particles) finally in its place. Recent resonator experiments “see” the particleseven the tiny microwave oneswhile the resonators themselves are obviously engineered around waves. I will visit experiments from both sides of the border (optical and microwave), building from an introduction that sets out the conceptual links provided by the theory of Markov open quantum systems.