Issue
EPL
Volume 83, Number 1, July 2008
Article Number 10007
Number of page(s) 4
Section General
DOI http://dx.doi.org/10.1209/0295-5075/83/10007
Published online 18 June 2008
EPL, 83 (2008) 10007
DOI: 10.1209/0295-5075/83/10007

Simultaneous measurement of coordinate and momentum on a von Neumann lattice

A. Mann, M. Revzen and J. Zak

Department of Physics, Technion-Israel Institute of Technology - Haifa 32000, Israel

ady@physics.technion.ac.il
revzen@physics.technion.ac.il
zak@physics.technion.ac.il

received 15 May 2008; accepted in final form 24 May 2008; published July 2008
published online 18 June 2008

Abstract
It is shown that on a finite phase plane the kq-coordinates and the sites of a von Neumann lattice are conjugate to one another. This elementary result holds when the number M defining the size of the phase plane can be expressed as a product, M = M1M2, with M1 and M2 being relatively prime. As a consequence of this result a hitherto unknown wave function is defined giving the probability of simultaneously measuring the momentum and coordinate on the von Neumann lattice.

PACS
03.65.-w - Quantum mechanics.
04.60.Ds - Canonical quantization.
04.60.Nc - Lattice and discrete methods.

© EPLA 2008