Çift Durumlu Ayrıştırma Yoluyla Elektrikle Programlanabilir TeraHertz Metaciğazlarda Kısıtlanmamış Faz Manipülasyonu

Özet (abstract)

Abstract Future terahertz (THz) paradigms, particularly in the context of 6G wireless networks and ubiquitous sensing, necessitate highly integrated and reconfigurable platforms capable of high-dimensional wavefront manipulation. However, the development of multifunctional THz metadevices has long been hindered by the fundamental inter-state phase correlation of tunable meta-atoms, which imposes severe constraints on functional density and design freedom. Here, we propose a transformative architecture to achieve unrestricted phase manipulation in electrically programmable THz metadevices that unlocks versatile multifunctional integration via dual-state decoupling. By synergizing the phase-transition dynamics of vanadium dioxide (VO2) with independently engineered metallic resonators, we move beyond treating VO2 as a localized bridging switch within a single resonator geometry. Instead, we exploit its lithography-compatible patternability to build structurally decoupled resonator modes, enabling independent 2π phase-pair responses across the insulating and metallic states. This dual-state decoupling breaks the inter-state phase correlation, thereby expanding the design space for arbitrary combinations of distinct wavefront functions on a single platform. To demonstrate system-level integration, we implement an FPGA-based row-wise electrical addressing scheme, enabling the selective actuation of localized VO2 subarrays. We experimentally demonstrate dynamic switching between single-directional beam steering and symmetric two-beam splitting within one metadevice, supporting both high-gain point-to-point links and simultaneous multiuser communication. Furthermore, we demonstrate the platform’s practical application potential through a proof-of-concept THz communication experiment, successfully establishing a directed data link utilizing a specific beam-steering configuration. This work provides a scalable, full-phase-range programmable framework for next-generation intelligent THz systems, with far-reaching implications for 6G communications, high-resolution imaging, and autonomous sensing.

Yazarların özeti; kaynağından alınmıştır. ACS Photonics, 2026 · DOI ↗