Speaker: Dr. Bin Yan

Host: Prof. Zhigang Jiang

Title: Deterministic quantum trajectory via imaginary time evolution

Abastract: Quantum trajectories—individual realizations of a quantum system’s evolution under unitary dynamics and measurements—provide a powerful framework for understanding open quantum systems. Beyond their ensemble averages, these trajectories can exhibit rich and distinctive behaviors. A striking example is the measurement-induced phase transition, where pure states conditioned on specific measurement outcomes display sharp entanglement transitions. However, experimentally probing such effects has remained challenging due to the exponential cost of post-selecting specific trajectories. In this talk, I will introduce a deterministic and efficient method to prepare selected trajectories using imaginary-time evolution. This approach applies to a broad class of states and opens the door to experimentally exploring post-selection-dependent phenomena that were previously thought to be inaccessible.