



01277nas a2200157   4500008004100000245005500041210005500096260001400151520078300165653002700948653003100975100002101006700002301027700003201050856003701082       2022                        eng d00aBounding the Minimum Time of a Quantum Measurement0 aBounding the Minimum Time of a Quantum Measurement  c9/13/20223 a<p>Measurements take a singular role in quantum theory. While they are often idealized as an instantaneous process, this is in conflict with all other physical processes in nature. In this Letter, we adopt a standpoint where the interaction with an environment is a crucial ingredient for the occurrence of a measurement. Within this framework, we derive lower bounds on the time needed for a measurement to occur. Our bound scales proportionally to the change in entropy of the measured system, and inversely proportional to the number of possible measurement outcomes and the interaction strength driving the measurement. We evaluate our bound in two examples where the environment is modelled by bosonic modes and the measurement apparatus is modelled by spins or bosons.</p>10aFOS: Physical sciences10aQuantum Physics (quant-ph)1 aShettell, Nathan1 aCentrone, Federico1 aGarcía-Pintos, Luis, Pedro  uhttps://arxiv.org/abs/2209.06248