Many-body manifestation of interaction-free measurement : the Elitzur-Vaidman bomb

Zilberberg, Oded and Romito, Alessandro and Gefen, Yuval (2016) Many-body manifestation of interaction-free measurement : the Elitzur-Vaidman bomb. Physical review B, 93 (11): 115411. ISSN 2469-9950

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1512.01086v1 - Accepted Version
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Abstract

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 bom". Many-body correlations tend to screen out manifestations of interaction-free measurement. Analyzing the correlations between the current at the interformeter'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.