Australian Journal of Physics

Scheme for direct measurement of the two-mode Wigner function in cavity QED and ion traps.

Shi-Biao Zheng

Published Jun 22, 2000• 1 citation

Abstract

A scheme is proposed for the reconstruction of two-mode entangled states in cavity QED and ion traps. For a two-mode field we show that the Wigner function can be obtained by measuring the probability of a two-level atom being in ground states after resonant interaction with two classical fields and dispersive interaction with the two-mode cavity field displaced by resonant sources. For the two-dimensional motion of a trapped ion the Wigner function is obtained by measuring the probability of the ion in its ground electronic state after displacing the ion motion and then resonantly exciting the ion.

DOI: 10.1071/ph00004

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