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We study the microscopic structure of the Josephson current in a single-modetunnel junction with a wide quasiclassical tunnel barrier. In such a junctioneach Andreev bound state carries a current of magnitude proportional to the{\em amplitude} of the normal electron transmission through the junction.Tremendous enhancement of the bound state current is caused by the resonancecoupling of superconducting bound states at both superconductor-insulatorinterfaces of the junction. The possibility of experimental observation of thesingle bound state current is discussed.Comment: 11 pages, [aps,preprint]{revtex

Giant Josephson current through a single bound state in a superconducting tunnel junction