Nonclassical characteristic functions for highly sensitive measurements

Abstract

Characteristic functions are shown to be useful for highly sensitive measurements. Redistributions of motional Fock states of a trapped atom can be directly monitored via the most fragile nonclassical part of the characteristic function. The method can also be used for decoherence measurements in optical quantum-information systems.

4 pages, 3 figures

References in corpus (4)

• Sub-Planck spots of Schroedinger cats and quantum decoherence
• Experimental nonclassicality of single-photon-added thermal light states
• Spin-dependent forces on trapped ions for phase-stable quantum gates and motional Schrodinger-cat states
• Nonclassical character of statistical mixtures of the single-photon and vacuum optical states

Cited by in corpus (10)

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• Quantum Process Nonclassicality
• Entanglement criteria of two two-level atoms interacting with two coupled modes
• Dissipative entanglement swapping in the presence of detuning and Kerr medium: Bell state measurement method
• Dynamics and Protecting of Entanglement in Two-Level Systems Interacting with a Dissipative Cavity: The Gardiner-Collett Approach
• Entanglement Swapping Between Dissipative Systems
• Entanglement dynamics of an arbitrary number of moving qubits in a common environment
• Scheme for coherent-state quantum process tomography via normally-ordered moments
• Qubit Movement-Assisted Entanglement Swapping
• Non-classicality tests and entanglement witnesses for macroscopic mechanical superposition states