Work

Open Quantum Systems Driven by Chirped Pulses: Quantized versus Semiclassical Fields and the Validity of the Rotating-Wave Approximation

Year: 2026

Type: article

Abstract: Population transfer via chirped rapid adiabatic passage is studied using open quantum and semiclassical models, with and without the rotating-wave approximation. A time-dependent variational approach based on the multiple-Davydov D 2 trial state is employed to simulate the quantum models with an arbitrary finite mean photon number. We examine the accuracy of both the semiclassical field description and the rotating-wave approximation. Robust population transfer is identified over a wide parameter regime controlled by the laser spectral chirp and is found to be insensitive to the spin–phonon coupling strength, Gaussian pulse area, and energy gap of the two-level system.

Source: The Journal of Physical Chemistry Letters

DOI: 10.1021/acs.jpclett.6c01634

Authors: Justin Zhengjie Tan, Frank Großmann, Yiying Yan, Maxim Gelin, Yang Zhao

Institutions: Nanyang Technological University, Technische Universität Dresden, Zhejiang University of Science and Technology, Hangzhou Dianzi University

Language: English

Topic: Quantum optics and atomic interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education - Singapore, National Natural Science Foundation of China

Awards: G2605723133, G5093896997