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Physical Review A

Unitary collapse of Schrödinger's cat state

Pavel Stránský, Pavel Cejnar, Radim Filip

Published Sep 19, 2024• 4 citations
Publisher

Abstract

The authors study a system composed of a single qubit coupled to a soft-mode quantum oscillator. They show that spontaneous unitary evolution of this system create a Schr"odinger-cat-like state of the oscillator, which is subsequently lost in a sudden process strongly resembling the measurement-induced collapse of wave function.
DOI
10.1103/physreva.110.l030202

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