Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Physics

Scheme for directly measuring the Wigner characteristic function via the driven Jaynes–Cummings model

Zheng Shi-Biao

Published Feb 1, 2004• 3 citations
Publisher

Abstract

A scheme is proposed for measuring the Wigner characteristic function of a cavity field. In the scheme an atom is sent through a slightly detuned cavity and driven by a strong resonant classical field. Then the population of the atom in the ground state directly yields the Wigner characteristic function of the cavity field.
DOI
10.1088/1009-1963/13/2/011

Related papers

Scheme for direct measurement of the Wigner characteristic function in cavity QED

Xu‐Bo Zou, K. Pahlke, Wolfgang M. Mathis

We propose a simple scheme for the reconstruction of the single-mode cavity field by considering the resonant atom-cavity interaction in the presence of a strong classical field. With the aid of the strong classical field, it is easy to realize the displacement operator for the cavity field correlated to the internal state of the atom. It is shown that the measurement of the population of the lower internal state directly yields the Wigner characteristic function of the cavity field.

Physical Review A•Jan 29, 2004•32 citations

Scheme for direct measurement of Wigner function in two-mode cavity QED driven by classical fields

Huai‐Zhi Wu, Zhen‐Biao Yang, Shi‐Biao Zheng

We propose a scheme for the direct measurement of Wigner function in two-mode cavity QED. The atoms are sent to resonantly interact with two orthogonally polarized cavity modes in the presence of strong classical field. The probability of measuring the atom in the ground state directly gives the useful information of the cavity field. This method can be used for quantum non-demolition measurement of the photon number.

Chinese Physics B•Dec 1, 2010•0 citations

A Simple Scheme for Directly Measuring the Wigner Functions of Cavity Fields

Zhi‐Ming Zhang

We propose a scheme for directly measuring the Wigner functions of cavity fields. The scheme is based on the Raman interaction between atoms and cavity fields. We find a simple and direct relation between the Wigner function and the atomic population difference. By suitably choosing the interaction time, we find that the Wigner function is just two times of the atomic population difference. Thus, one can obtain the Wigner function by measuring the atomic populations and calculating the population difference.

Chinese Physics Letters•Jan 23, 2003•8 citations

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

Shi-Biao Zheng

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.

Australian Journal of Physics•Jun 22, 2000•1 citation

Scheme for Direct Measurement of the Wigner Function via Resonant Interaction

Zheng Shi-Biao

We propose a scheme for direct measurement of the Wigner function for a cavity mode. In the scheme the cavity field resonantly interacts with an atomic ensemble. Under certain conditions, the state of the cavity mode is transferred to the atomic system. After a displacement the measurement of the parity of the atomic excitation number directly yields the Wigner function of the initial state of the cavity mode.

Chinese Physics Letters•Sep 1, 2008•0 citations

Dynamics of the Driven Jaynes–Cummings Model

Liping Fu, Zheng Shi-Biao, Guo Guang-Can

We study the dynamical features of the Jaynes–Cummings model with the atom driven by an external classical field in the case that the cavity field is initially in a Fock state.We find the dynamical variables by using dressed states in the bare atom representation. We show that the dynamical behavior of the cavity field can be strongly modified by the external classical field. We also find that the cavity field is super-Poissonian after some interaction time if the external field is strong enough.

Communications in Theoretical Physics•Jan 30, 1999•1 citation
We propose a scheme for directly measuring the Wigner functions of cavity fields. The scheme is based on the Raman interaction between atoms and cavity fields. We find a simple and direct relation between the Wigner function and the atomic population difference. By suitably choosing the interaction time, we find that the Wigner function is just two times of the atomic population difference. Thus, one can obtain the Wigner function by measuring the atomic populations and calculating the population difference.
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.
We study the dynamical features of the Jaynes–Cummings model with the atom driven by an external classical field in the case that the cavity field is initially in a Fock state.We find the dynamical variables by using dressed states in the bare atom representation. We show that the dynamical behavior of the cavity field can be strongly modified by the external classical field. We also find that the cavity field is super-Poissonian after some interaction time if the external field is strong enough.