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

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Article number115411
<mark>Journal publication date</mark>15/03/2016
<mark>Journal</mark>Physical review B
Issue number11
Number of pages7
Publication StatusPublished
Early online date9/03/16
<mark>Original language</mark>English


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.

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6 pages, 2 figures, comments are welcome