Ji. Cirac et al., INHIBITION OF QUANTUM TUNNELING OF AN ATOM DUE TO THE CONTINUOUS OBSERVATION OF LIGHT-SCATTERING, Europhysics letters, 27(2), 1994, pp. 123-128
We propose a scheme for observing the inhibition of quantum tunneling
of an atom trapped in a double-well potential due to continuous observ
ation of light scattering. A resonant laser beam is focused in one of
the wells. Continuous measurement of the position of the atom is perfo
rmed by observing the presence (or absence) of photons emitted by the
atom. An interpretation in terms of a quantum Zeno effect is given.