Seminarium Fizyki Materii Skondensowanej

Classical direct measurements are noninvasive but quantum are invasive (byprojection). However, for indirect measurements, there exists a speciallimit where both classical and quantum measurements are noninvasive.Surprisingly, classical noninvasive measurements are symmetric withrespect to time reversal but quantum are not. This fundamental paradox iscan be tested in many system e.g. double well, or a quantum dot.