Abstract
The discrete-time jump model for intrinsic decoherence in quantum mechanics proposed recently by Milburn is here generalized to explicitly time-dependent Hamiltonians. In this model, a time-dependent entropy is obtained and thus it admits of an interpretation that this is a model for an open system. Unlike in the Milburn model, we introduce a minimum uncertainty phase change dictated by the minimum ‘‘time-energy uncertainty product’’ to define the shortest time scale in the system. Implications of this model to quantum nanometric devices such as quantum dots or resonant tunneling devices are indicated. © 1996 The American Physical Society.
- Received 17 January 1996
DOI:https://doi.org/10.1103/PhysRevA.54.1124
©1996 American Physical Society