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Elmer Doggen (Karlsruhe Institute of Technology)
Thursday 20 October 2022, 14:00-15:00
Quantum measurement protocol for many-body systems through projective measurements on ancillary sites
- đ¤ Speaker: Elmer Doggen (Karlsruhe Institute of Technology)
- đ Date & Time: Thursday 20 October 2022, 14:00 - 15:00
- đ Venue: TCM Seminar Room
Abstract
I will outline a protocol for implementing quantum measurements by coupling a many-body lattice system to a local degree of freedom. This method can be used for effective density measurements through the resulting Rabi oscillations in the ancillary degrees of freedom. Furthermore, an analysis of the effect of repeated measurements uncovers evidence for a disentangling-entangling measurement-induced transition as a function of the measurement strength, in analogy to direct measurement protocols. The transition requires an extensively growing number of measurements with system size. The dynamics is strongly non-Markovian, featuring a wide distribution of the entanglement entropy across trajectories.
Series This talk is part of the Theory of Condensed Matter series.
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