Many-body manifestation of interaction-free measurement: The Elitzur-Vaidman bomb
Oded Zilberberg, Alessandro Romito, Yuval Gefen · Physical review. B./Physical review. B · 2016
We consider an implementation of the Elitzur-Vaidman bomb experiment in a dc-biased electronic Mach-Zehnder interferometer with a leakage port on one of its arms playing the role of a ``lousy bomb.'' Many-body correlations tend to screen out manifestations of interaction-free measurement. Analyzing the correlations between the current at the interferometer's drains and at the leakage port, we identify the limit where the originally proposed single-particle effect is recovered. Specifically, we find that in the regime of sufficiently diluted injected electron beam and short measurement times, effects of quantum-mechanical wave-particle duality emerge in the cross-current correlations.