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The advent of spacetime cloaking in 2011 opened a new paradigm in transformation optics in which the full spacetime covariance of Maxwell's equations was exploited to design, theoretically, a dynamic medium capable of concealing events. Shortly afterwards spacetime cloaks were demonstrated experimentally in systems that exploited dispersion in optical fibres. Somewhat ironically, dispersion was neglected in the original proposal of spacetime cloaking, and a theoretical apparatus that properly accounts for dispersion has only recently been established. I will describe the historical evolution towards the spacetime cloak, how it was demonstrated experimentally, and some of the new theoretical challenges in transformation optics it poses.
Event Time
3pm-4pm
Venue
Furness LT 1
Speaker
Prof. Martin McCall, Imperial College, London
<July 2016>
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