Graphene Zero-Bias Sub-Terahertz Turnkey Detector with Above 43 GHz Bandwidth
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2026
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| author | Titova, E. I. Titchenko, A. Titova, M. Shein, K. Kuksov, A. Sobolev, A. Kashchenko, M. Kravtsov, M. Elesin, L. Novoselov, K. S. Goltsman, G. Svintsov, D. A. Gayduchenko, I. Bandurin, D. A. |
| author_facet | Titova, E. I. Titchenko, A. Titova, M. Shein, K. Kuksov, A. Sobolev, A. Kashchenko, M. Kravtsov, M. Elesin, L. Novoselov, K. S. Goltsman, G. Svintsov, D. A. Gayduchenko, I. Bandurin, D. A. |
| contents | High-frequency terahertz (THz) detectors are vital for next-generation high-speed wireless communication systems. Graphene, with its high carrier mobility, broadband absorption, and weak electron-phonon coupling, offers great promise for ultra-fast THz photothermoelectric devices. Although graphene-based detectors in the infrared range have shown bandwidths above 500 GHz, extending their operation to the THz range is difficult because long-wavelength radiation does not efficiently couple to the small graphene area. To overcome this issue, THz antennas are often employed; however, their use typically limits system performance to only a few gigahertz due to parasitic effects. In this work, we present an antenna-coupled sub-THz graphene detector with a bandwidth exceeding 43 GHz. We optimized the detector design to minimize losses, match the antenna impedance to the 1 kOhm graphene channel, and maintain zero-bias operation. Importantly, we introduce a compact, turnkey packaged solution. Our results provide a practical route toward high-speed and low-power graphene THz detectors suitable for real-world communication and imaging applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_03554 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Graphene Zero-Bias Sub-Terahertz Turnkey Detector with Above 43 GHz Bandwidth Titova, E. I. Titchenko, A. Titova, M. Shein, K. Kuksov, A. Sobolev, A. Kashchenko, M. Kravtsov, M. Elesin, L. Novoselov, K. S. Goltsman, G. Svintsov, D. A. Gayduchenko, I. Bandurin, D. A. Mesoscale and Nanoscale Physics High-frequency terahertz (THz) detectors are vital for next-generation high-speed wireless communication systems. Graphene, with its high carrier mobility, broadband absorption, and weak electron-phonon coupling, offers great promise for ultra-fast THz photothermoelectric devices. Although graphene-based detectors in the infrared range have shown bandwidths above 500 GHz, extending their operation to the THz range is difficult because long-wavelength radiation does not efficiently couple to the small graphene area. To overcome this issue, THz antennas are often employed; however, their use typically limits system performance to only a few gigahertz due to parasitic effects. In this work, we present an antenna-coupled sub-THz graphene detector with a bandwidth exceeding 43 GHz. We optimized the detector design to minimize losses, match the antenna impedance to the 1 kOhm graphene channel, and maintain zero-bias operation. Importantly, we introduce a compact, turnkey packaged solution. Our results provide a practical route toward high-speed and low-power graphene THz detectors suitable for real-world communication and imaging applications. |
| title | Graphene Zero-Bias Sub-Terahertz Turnkey Detector with Above 43 GHz Bandwidth |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2603.03554 |