Enhancing Quantum Synchronization in a Driven Qubit System Coupled to a Structured Environment
Amir Hossein Houshmand Almani, Ali Mortezapour, Alireza Nourmandipour · Annalen der Physik · 2025
Abstract In this paper, the issue of Quantum Synchronization in a driven two‐level (qubit) system situated within a structured environment is examined. The findings have practical implications as it is discovered that adding a time‐dependent periodic modulation to the transition frequency of the qubit can significantly enhance quantum synchronization. The phase preference and, consequently, the phase locking conditions in the system is first discovered using the Husimi ‐function. It is revealed that combining frequency modulation and non‐Markovian effects enables us to achieve a stable phase‐locking for the system. It is shown that tuning the amplitude‐to‐frequency ratio of the modulation process on the zeros of the zeroth‐order Bessel function led to phase locking and, thus, surprisingly enhances quantum synchronization in the system. These results provide new insights into efficiently understanding phase dynamics in quantum environments.