What can quantum measurement tell us about the arrow of time? To answer this question, we use cutting edge techniques involving superconducting circuits cooled to near absolute zero to capture “movies” of quantum behaviour. When we press rewind on an ordinary movie of everyday life, the movie looks strange and shows very unlikely behaviour: people walk backwards, water flows up hill, and messy floors spontaneously become clean. It is clear from watching an ordinary movie which way is backwards and which way is forwards, but is the same true for movies of quantum behaviour? In this talk, I will share these quantum movies and discuss how we can infer an arrow of time from quantum measurement alone.
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