dorsal/arxiv
View SchemaComment on "Quantitative wave-particle duality in multibeam interferometers"
| Authors | G. Bimonte, R. Musto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0304004 |
| URL | https://arxiv.org/abs/quant-ph/0304004 |
| DOI | 10.1103/PhysRevA.67.066101 |
| Journal | Phys.Rev. A67 (2003) 066101 |
Abstract
In a recent paper [Phys. Rev. {\bf A64}, 042113 (2001)] S. D\"urr proposed an interesting multibeam generalization of the quantitative formulation of interferometric wave-particle duality, discovered by Englert for two-beam interferometers. The proposed generalization is an inequality that relates a generalized measure of the fringe visibility, to certain measures of the maximum amount of which-way knowledge that can be stored in a which-way detector. We construct an explicit example where, with three beams in a pure state, the scheme proposed by D\"{u}rr leads to the possibility of an ideal which-way detector, that can achieve a better path-discrimination, at the same time as a better fringe visibility. In our opinion, this seems to be in contrast with the intuitive idea of complementarity, as it is implemented in the two-beams case, where an increase in path discrimination always implies a decrease of fringe visibility, if the beams and the detector are in pure states.
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"abstract": "In a recent paper [Phys. Rev. {\\bf A64}, 042113 (2001)] S. D\\\"urr proposed an\ninteresting multibeam generalization of the quantitative formulation of\ninterferometric wave-particle duality, discovered by Englert for two-beam\ninterferometers. The proposed generalization is an inequality that relates a\ngeneralized measure of the fringe visibility, to certain measures of the\nmaximum amount of which-way knowledge that can be stored in a which-way\ndetector. We construct an explicit example where, with three beams in a pure\nstate, the scheme proposed by D\\\"{u}rr leads to the possibility of an ideal\nwhich-way detector, that can achieve a better path-discrimination, at the same\ntime as a better fringe visibility. In our opinion, this seems to be in\ncontrast with the intuitive idea of complementarity, as it is implemented in\nthe two-beams case, where an increase in path discrimination always implies a\ndecrease of fringe visibility, if the beams and the detector are in pure\nstates.",
"arxiv_id": "quant-ph/0304004",
"authors": [
"G. Bimonte",
"R. Musto"
],
"categories": [
"quant-ph",
"hep-th"
],
"doi": "10.1103/PhysRevA.67.066101",
"journal_ref": "Phys.Rev. A67 (2003) 066101",
"title": "Comment on \"Quantitative wave-particle duality in multibeam interferometers\"",
"url": "https://arxiv.org/abs/quant-ph/0304004"
},
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