{ "id": "1210.5657", "version": "v4", "published": "2012-10-20T21:32:47.000Z", "updated": "2013-06-03T20:57:15.000Z", "title": "A cold-atom ratchet interpolating between classical and quantum dynamics", "authors": [ "R. K. Shrestha", "W. K. Lam", "J. Ni", "G. S. Summy" ], "comment": "This is a paper following arXiv:1210.6025", "categories": [ "quant-ph", "cond-mat.quant-gas" ], "abstract": "We study the crossover between classical and quantum dynamics by observing the behavior of a quantum ratchet created by exposing a Bose-Einstein condensate to short pulses of a potential which is periodic in both space and time. Such a ratchet is manifested by a directed current of particles, even though there is an absence of a net bias force. We confirm that the ratchet behavior can under certain circumstances be the same in both regimes. We demonstrate that this behavior can be understood using a single variable containing many of the experimental parameters and thus the ratchet current is describable using a single universal scaling law.", "revisions": [ { "version": "v4", "updated": "2013-06-03T20:57:15.000Z" } ], "analyses": { "keywords": [ "quantum dynamics", "cold-atom ratchet interpolating", "single universal scaling law", "net bias force", "quantum ratchet" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1210.5657S" } } }