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Tunable Superarrival in Fractional Quantum Media | ||
| Progress in Physics of Applied Materials | ||
| دوره 6، شماره 1 - شماره پیاپی 10، مرداد 2026، صفحه 69-76 اصل مقاله (667.57 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22075/ppam.2025.38523.1162 | ||
| نویسندگان | ||
| Maryam Sabzevar1؛ Mohammad Hossein Ehsani* 1؛ Mehdi Soleimani2 | ||
| 1Faculty of Physics, Semnan University, Semnan 35195-363, Iran | ||
| 2Department of Physics, Qom University of Technology, Qom 1519-37195, Iran | ||
| تاریخ دریافت: 09 مرداد 1404، تاریخ بازنگری: 11 شهریور 1404، تاریخ پذیرش: 20 شهریور 1404 | ||
| چکیده | ||
| In this study, we present a numerical investigation of wave packet dynamics in a nonlinear and dispersive medium described by the space-fractional Schrödinger equation, with direct relevance to quantum electronic device applications. Employing the Split-Step Finite Difference (SSFD) method, we analyse the superarrival phenomenon, where the arrival time of a Gaussian wave packet is accelerated due to the presence of a decelerating potential barrier. Two key configurations are explored: a barrier approaching the wave packet and a receding one. We show that the superarrival response is highly sensitive to system parameters such as the fractional order, nonlinearity, dispersion, and the barrier's motion profile. Our findings demonstrate that superarrival can be effectively tuned, offering new design strategies for emerging quantum electronic components such as ultrafast signal switches, wave-based logic gates, and controllable tunneling junctions in nano-engineered systems. This work bridges fundamental quantum transport with the functionality of next-generation electronic devices. | ||
| کلیدواژهها | ||
| Superarrival؛ Fractional Schrödinger equation؛ Split-Step finite difference method؛ Gaussian wave packet؛ Moving potential | ||
| مراجع | ||
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