Abstract
We formulate the conditions under which the dynamics of a continuously measured quantum system becomes indistinguishable from that of the corresponding classical system. In particular, we demonstrate that even in a classically chaotic system the quantum state vector conditioned by the measurement remains localized and, under these conditions, follows a trajectory characterized by the classical Lyapunov exponent.
- Received 16 June 1999
DOI:https://doi.org/10.1103/PhysRevLett.85.4852
©2000 American Physical Society