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Quantum Andreev interferometer in an environmenta Ioffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation b University of Oslo, , Oslo, 0316, Norway , Oslo , Norway c Department of Applied Physics, Chalmers University of Technology, Göteborg, S-41296, Göteborg , Sweden d University of Gothenburg, Gothenburg, Gothenburg , Sweden The influence of a noisy environment on coherent transport in Andreev states through a point contact between two superconductors is considered. The amount of dephasing is estimated for a microwave-activated quantum interferometer. Possibilities of experimentally investigating the coupling between a superconducting quantum point contact and its electromagnetic environment are discussed.
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