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Plasmon-induced quantum interference and coherent control of orbital angular momentum in a V-type three-level system

Shaikh Hasibul MajidArtificial Intelligence and Sensing Technology Research Center, University of Tabuk, Tabuk, Saudi ArabiaWade GhribiDepartment of Computer Engineering, College of Computer Science, King Khalid University, Al-Faraa, KSAEkaterina DiakinaPolytechnic Institute, Far Eastern Federal University, Vladivostok, RussiaH. R. ManjunathDepartment of Physics, School of Engineering and Technology, JAIN (Deemed to be University), Bangalore, Karnataka, IndiaAli J. KhalafRadiology Techniques Department, College of Medical Technology, College of Technical Engineering, the Islamic University of Al Diwaniyah, Al Diwaniyah, IraqI B SapaevSchool of Engineering, Central Asian University, Tashkent, 111221, UzbekistanH.M. AbertDepartment of PHYSICS, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, IndiaSanjeev KumarDepartment of Physics, University Institute of Sciences, Chandigarh University, Mohali, Punjab, IndiaManoranjan ParhiDepartment of Computer Science and Engineering, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, 751030, IndiaM.K. SharmaDepartment of Mathematics, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, 250004, India

2026en

Ochiq kirish: yoʻq

ABI

Annotatsiya

We investigate the coherent transfer of orbital angular momentum (OAM) from an incident vortex probe field to a generated signal field in a V-type quantum system coupled to a plasmonic nanostructure. Analytical and numerical results demonstrate that the presence of the plasmonic environment enables plasmon-mediated quantum interference between decay channels, which activates a probe-to-signal coupling channel that is absent in free space within the present model. In contrast, in free space, the interference vanishes and the signal is suppressed, highlighting the critical role of engineered photonic environments in facilitating nonlinear OAM transfer. Spatial analysis reveals that nonzero OAM produces characteristic ring-shaped intensity profiles with discrete helical phase jumps, while the absorption exhibits azimuthal modulation reflecting regions of gain and transparency. We further explore the propagation dynamics of the signal field under varying incoherent pumping rates, emitter–plasmon distances, and field detunings. Coherent energy transfer is optimized at short distances and moderate pumping, whereas increased separation or suboptimal detuning reduces conversion efficiency due to weakened plasmon-enhanced interference. Our results show that careful tuning of emitter–surface separation, pumping, and detuning allows precise control of both amplitude and phase of the generated structured light. These findings establish plasmonic–quantum hybrid systems as versatile platforms for vortex-based optical conversion, nanoscale light shaping, and structured-light quantum information applications.

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DOI: 10.1016/j.chaos.2026.119135

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