Phase-number uncertainty from Weyl commutation relations

Abstract

We derive suitable uncertainty relations for characteristics functions of phase and number variables obtained from the Weyl form of commutation relations. This is applied to finite-dimensional spin- like systems, which is the case when describing the phase difference between two field modes, as well as to the phase and number of a single-mode field. Some contradictions between the product and sums of characteristic functions are noted.

7 pages, 4 figures, enlarged and improved version with a new author

References in corpus (3)

• Stronger uncertainty relations for the sum of variances
• Entropic measures of joint uncertainty: effects of lack of majorization
• Uncertainty relations for characteristic functions

Cited by in corpus (1)

• Uncertainty relations for characteristic functions