Print Email Facebook Twitter Crossover between strong and weak measurement in interacting many-body systems Title Crossover between strong and weak measurement in interacting many-body systems Author Esin, I. Romito, A. Blanter, I.M. Gefen, Y. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2016-01-08 Abstract Measurements with variable system–detector interaction strength, ranging from weak to strong, have been recently reported in a number of electronic nanosystems. In several such instances many-body effects play a significant role. Here we consider the weak-to-strong crossover for a setup consisting of an electronic Mach–Zehnder interferometer, where a second interferometer is employed as a detector. In the context of a conditional which-path protocol, we define a generalized conditional value (GCV), and determine its full crossover between the regimes of weak and strong (projective) measurement. We find that the GCV has an oscillatory dependence on the system–detector interaction strength. These oscillations are a genuine many-body effect, and can be experimentally observed through the voltage dependence of cross current correlations. Subject weak measurementstrong measurementweak valueMachZehnder interferometer To reference this document use: http://resolver.tudelft.nl/uuid:cd3ee453-b4e8-4b97-b34f-07840289c1e0 Publisher IOP Publishing ISSN 1367-2630 Source https://doi.org/10.1088/1367-2630/18/1/013016 Source New Journal of Physics, 18 (1), 2016 Part of collection Institutional Repository Document type journal article Rights © 2016 IOP PublishingCC BY - Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence Files PDF 329142.pdf 1.6 MB Close viewer /islandora/object/uuid:cd3ee453-b4e8-4b97-b34f-07840289c1e0/datastream/OBJ/view