Implementation of a hybrid tripartite interaction between a two-level atom and two cavities in the strong-driving regime
Phys. Rev. A 114, 023715 – Published 14 August, 2026
DOI: https://doi.org/10.1103/93dp-zjmz
Abstract
Tripartite interactions have recently garnered significant interest owing to their potential in quantum information processing and quantum computation. In this work, we present a scheme for realizing a hybrid tripartite interaction between an atom and two cavities in the strong-driving regime. This tripartite interaction enables the deterministic generation of hybrid tripartite Greenberger-Horne-Zeilinger (GHZ) entangled states, the transfer of the atomic state to a two-cavity entangled state, and the construction of a controlled-phase gate between the two cavities. Our scheme requires only a single two-level coupler atom and a single-step operation, making the system architecture and protocol notably simple. As no auxiliary atomic levels are involved, decoherence caused by higher energy levels can be avoided. As an example, we investigate the experimental feasibility of generating the proposed hybrid GHZ state within a circuit QED system. The approach is broadly applicable and can be implemented in a wide range of physical systems, such as a two-level natural or artificial atom coupled to two optical or microwave cavities.
