Creating multicomponent Schrödinger cat states in a coupled qubit-oscillator system

2025/12/26 by Pavel Stránský, Stránský, Pavel, Pavel Cejnar +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Mechanics and Non-Hermitian Physics #Quantum Physics (quant-ph) #Quantum chaos and dynamical systems #Quantum many-body systems

paper · doi:10.48550/arxiv.2512.22380

openalex publication_date 2025/12/26 · openalex created_date 2025/12/31 · openalex updated_date 2026/07/28

Abstract

We present a method for preparing various exotic modifications of Schrödinger 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.

Citations

• Multicomponent cat states with sub-Planckian structures and their optomechanical analogues
• Topologically protected Bell-cat states in a simple spin model
• Engineering Entangled Schrodinger Cat States of Separated Cavity Modes in Cavity-QED
• Protecting the quantum interference of cat states by phase-space compression
• Ultrastrong coupling regimes of light-matter interaction
• Schrodinger Cat States in Circuit QED
• Ultrafast Creation of Large Schrödinger Cat States of an Atom
• On the Process of Space Quantization

Cited by

• Decoherence dynamics across sub-Planckian to arbitrary scales using kitten states

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