Crossover between strong and weak measurement in interacting many-body systems

I Esin, A Romito, IM Blanter, Y Gefen

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
1 Downloads (Pure)


Measurements with variable system–detector interaction strength, ranging from weak to strong, havebeen recently reported in a number of electronic nanosystems. In several such instances many-bodyeffects play a significant role. Here we consider the weak-to-strong crossover for a setup consisting ofan 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.Wefind 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 thevoltage dependence of cross current correlations.
Original languageEnglish
Pages (from-to)1-15
JournalNew Journal of Physics
Issue number1
Publication statusPublished - 2016

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