The utilization of electromagnetic waves in quantum information science and the least-explored terahertz (THz) regime are posed to revolutionize sensing, computing, and communication. The key to the prosperity of such frontier is the development of integrated circuits that enables high-precision and high-flexibility manipulation of the high-frequency spectrum. In this talk, innovations of chip-scale quantum and THz systems will be discussed, which allow for significant miniaturization, practical solutions, and exciting research opportunities across the device, circuit, and system levels. In specific, I will focus on two themes that illustrate such opportunities. The first one is building compact and scalable integrated platforms towards quantum-enhanced sensing and information processing. I will discuss a complementary-metal-oxide-semiconductor (CMOS) vector magnetic field sensor. This chip integrates the essential microwave and optical components to control and measure the field-sensitive quantum states of the solid-state nitrogen-vacancy (NV) centers in diamond. The second theme explores an overlooked aspect of THz technology, namely the aggressive shrinkage of wireless nodes while sustaining broad-bandwidth and beamforming capabilities. I will introduce the first package-less THz identification tag (THzID) in CMOS and the smallest monolithic ID chip with far-field communication capability. This ID also enables beam steering and asymmetric cryptography. I will conclude my talk with my ongoing research towards the realization of scalable multi-qubit quantum processors, as well as efforts in bridging the wireless and quantum technologies enabling new paradigms in sensing, computing, and communication infrastructures.
Mohamed I. Ibrahim received the B.Sc. and M.Sc. degrees in electrical engineering from Ain Shams University, Cairo, Egypt, in 2012 and 2016, respectively. Since 2016, he has been pursuing his Ph.D. degree in electrical engineering and computer science at the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, where he also received an M.S. degree in 2020. His research interests include microelectronics circuits and systems for applications ranging from millimeter-wave wireless devices to chip-scale quantum systems as well as novel electromagnetic structures and devices. He received the 2020-2021 IEEE Solid-State Circuits Society (SSCS) predoctoral achievement award and the 2021 IEEE Microwave Theory & Techniques Society (MTT-S) Graduate Fellowship.
