Two-color electromagnetically induced transparency generated slow light in double-mechanical-mode coupling carbon nanotube resonators

Hua-Jun Chen

doi:10.1016/j.isci.2024.109328

Two-color electromagnetically induced transparency generated slow light in double-mechanical-mode coupling carbon nanotube resonators

iScience. 2024 Feb 28;27(4):109328. doi: 10.1016/j.isci.2024.109328. eCollection 2024 Apr 19.

Author

Hua-Jun Chen^{1

2}

Affiliations

¹ School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, Anhui 232001, China.
² Center for Fundamental Physics, Anhui University of Science and Technology, Huainan, Anhui 232001, China.

Abstract

We theoretically propose a multiple-mode-coupling hybrid quantum system comprising two-mode-coupling nanomechanical carbon nanotube (CNT) resonators realized by a phase-dependent phonon-exchange interaction interacting with the same nitrogen-vacancy (NV) center in diamond. We investigate the coherent optical responses of the NV center under the condition of resonance and detuning. In particular, two-color electromagnetically induced transparency (EIT) can be achieved by controlling the system parameters and coupling regimes. Combining the spin-phonon interactions and phonon-phonon coupling with the modulation phase, the switching of one and two EIT windows has been demonstrated, which generates a light delay or advance. The slow-to-fast and fast-to-slow light transitions have been studied in different coupling regimes, and the switch between slow and fast light can be controlled periodically by tuning the modulation phase. The study can be applied to phonon-mediated optical information storage or information processing with spin qubits based on multiple-mode hybrid quantum systems.

Keywords: Quantum physics; Quantum theory.