Hostname: page-component-7b7567c8c-lpg2g Total loading time: 0 Render date: 2026-11-15T16:27:56.970Z Has data issue: false hasContentIssue false

Controllablity of a quantum particle in a 1D variable domain

Published online by Cambridge University Press:  21 September 2007

Karine Beauchard*
Affiliation:
CMLA, ENS Cachan, 61 avenue du président Wilson, 94235 Cachan cedex, France; Karine.Beauchard@cmla.ens-cachan.fr
Get access

Abstract

We consider a quantum particle in a 1D infinite square potential well with variable length. It is a nonlinear control system in which the state is the wave function ϕ of the particle and the control is the length l(t) of the potential well. We prove the following controllability result : given $\phi_{0}$ close enough to an eigenstate corresponding to the length l = 1 and $\phi_{f}$ close enough to another eigenstate corresponding to the length l=1, there exists a continuous function $l:[0,T] \rightarrow \mathbb{R}^{*}_{+}$ with T > 0, such that l(0) = 1 and l(T) = 1, and which moves the wave function from $\phi_{0}$ to $\phi_{f}$ in time T.In particular, we can move the wave function from one eigenstate to another one by acting on the length of the potential well in a suitable way.Our proof relies on local controllability results proved with moment theory, a Nash-Moser implicit function theorem and expansions to the second order.

Information

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable