Institute for Quantum Information (IQI) Weekly Seminar
Operationally-Motivated Uncertainty Relations for Joint Measurability and the Error-Disturbance Tradeoff
We derive new Heisenberg-type uncertainty relations for both joint measurability and the error- disturbance tradeoff for arbitrary observables of finite-dimensional systems (I will shortly mention the extension to position/momentum). The relations are formulated in terms of a directly operational quantity, namely the probability of distinguishing the actual operation of a device from its hypothetical ideal, by any possible testing procedure whatsoever. Moreover, they may be directly applied in information processing settings, for example to infer that devices which can faithfully transmit information regarding one observable do not leak any information about conjugate observables to the environment.
Joint work with Joe Renes and Stefan Huber, ETH Zurich, based on arXiv:1402.6711
Contact: Jackie O'Sullivan at 626.395.4964 email@example.com