A new wave equation for a continuous nondemolition measurement
Abstract
A stochastic model for nondemolition continuous measurement in a quantum system is given. It is shown that the posterior dynamics, including a continuous collapse of the wave function, is described by a nonlinear stochastic wave equation. For a particle in an electromagnetic field it reduces to the Schrödinger equation with extra imaginary stochastic potentials.
- Publication:
-
Physics Letters A
- Pub Date:
- October 1989
- DOI:
- 10.1016/0375-9601(89)90066-2
- Bibcode:
- 1989PhLA..140..355B