Generating Optical Schrödinger Kittens for Quantum Information Processing

See allHide authors and affiliations

Science  07 Apr 2006:
Vol. 312, Issue 5770, pp. 83-86
DOI: 10.1126/science.1122858

You are currently viewing the abstract.

View Full Text


We present a detailed experimental analysis of a free-propagating light pulse prepared in a “Schrödinger kitten” state, which is defined as a quantum superposition of “classical” coherent states with small amplitudes. This kitten state is generated by subtracting one photon from a squeezed vacuum beam, and it clearly presents a negative Wigner function. The predicted influence of the experimental parameters is in excellent agreement with the experimental results. The amplitude of the coherent states can be amplified to transform our “Schrödinger kittens” into bigger Schrödinger cats, providing an essential tool for quantum information processing.

View Full Text