Creating multicomponent Schr\"odinger cat states in a coupled qubit-oscillator system
Quantum Physics
2026-04-01 v2
Abstract
We present a method for preparing various exotic modifications of Schr{\"o}dinger cat states by coupling a semiclassical oscillator to a system of qubits. Varying the number of qubits and parameters of the protocol (involving quantum quench of the coupled system and a subsequent spin measurement), we bring the oscillator into a coherent superposition composed of an arbitrary number of wavepackets in tunable proportions and motion relations. The method can be implemented with the aid of current experimental techniques and may find applications in quantum information and sensing protocols.
Keywords
Cite
@article{arxiv.2512.22380,
title = {Creating multicomponent Schr\"odinger cat states in a coupled qubit-oscillator system},
author = {Pavel Stránský and Pavel Cejnar},
journal= {arXiv preprint arXiv:2512.22380},
year = {2026}
}
Comments
6 pages of the main text, 5 figures; 13 pages of the supplemental material, includes a video file as an additional supplemental material