Quantum Coherence in a Superfluid Josephson Junction
摘要：
We report a new kind of experiment in which we take an array of nanoscale apertures that form a superfluid (4)He Josephson junction and apply quantum phase gradients directly along the array. We observe collective coherent behaviors from aperture elements, leading to quantum interference. Connections to superconducting and Bose-Einstein condensate Josephson junctions as well as phase coherence among the superfluid aperture array are discussed.
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关键词：
tunneling, josephson effect, bose-einstein condensates in periodic potentials, solitons, vortices and topological excitations interferometers superconducting quantum interference devices (SQUIDs)
DOI：
http://dx.doi.org/10.1103/PhysRevLett.106.055302
被引量：
年份：
2011
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