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September 13, 202211:30 am (CDT)

AMO/IQSE seminar: Time-inversion in quantum metrology


Luiz Davidovich (Institute for Quantum Science and Engineering, Texas A&M University; Hagler Institute for Advanced Study; Federal University of Rio de Janeiro)

About The Speaker

Professor Davidovich is a fellow of the Optical Society of America and the American Physical Society. He is foreign associate of the US National Academy of Sciences, member of the World Academy of Sciences for the Advancement of Science in the Developing Countries (TWAS) and president of the Brazilian Academy of Sciences. He received the Brazilian Grand-Cross of the National Order of Scientific Merit and the Brazilian National Prize of Science and Technology.

Event Details

Quantum metrology aims to estimate parameters, like weak electric and magnetic fields, temperature, phases, small displacements, and the time duration of a dynamical process,  with precision beyond that attained by classical metrological methods. The usual procedure involves measuring a probe, prepared in a convenient initial state, after it has interacted with the system under investigation, and then obtaining from the measurement results an estimation of the parameter of interest, through some convenient estimator. Precision can be enhanced by using specially tailored quantum states of the probes, like squeezed and entangled states. This talk will review some experiments under the unifying concept of time-inversion, which will be shown to be relevant for many quantum metrological tasks.

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