On the generation and identification of optical Schrödinger cats

Abstract

We discuss the possibility of generating and detecting, by a tomographic reconstruction of the Wigner function, a macroscopic superposition of two coherent states. The superposition state is created using a conditioned measurement on the polarisation of a probe photon entangled to a coherent state. The entanglement is obtained using a Kerr cell inserted in a Mach-Zender interferometer. Some hint about generation of GHZ states is given as well.

accepted for publication

References in corpus (2)

• New experimental test of Bell inequalities by the use of a non-maximally entangled photon state
• Quantum non-demolition (QND) modulation of quantum interference

Cited by in corpus (4)

• Research on Hidden Variable Theories: a review of recent progresses
• Homodyne Bell's inequalities for entangled mesoscopic superpositions
• Review of recent experimental progresses in Foundations of Quantum Mechanics and Quantum Information obtained in Parametric Down Conversion Experiments at IENGF
• Proposal of an experimental scheme for realising a translucent eavesdropping on a quantum cryptographic channel