TY - CPAPER AB - A which-way device is one which is designed to detect which of 2 paths is taken by a quantum particle, whether Schrodinger's cat is dead or alive. One possible such device is represented by an Aharonov-Bohm ring with a quantum dot on one branch. A charged cantilever or spring is brought close to the dot as a detector of the presence of an electron. The conventional view of such a device is that any change in the state of the cantilever implies a change in the electron state which will in turn destroy the interference effects. In this paper we show that it is in fact possible to change the state of the oscillator while preserving the quantum interference phenomenon. © 2003 The Physical Society of Japan. AU - MacKinnon,A AU - Armour,AD DO - 10.1143/JPSJS.72SA.118 EP - 122 PY - 2003/// SN - 0031-9015 SP - 118 TI - Quantum interference and inelastic scattering in a model which-way device UR - http://dx.doi.org/10.1143/JPSJS.72SA.118 ER -