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The Reconfigurable Intelligent Surface (RIS) constitutes one of the prominent technologies for the next 6-th Generation (6G) of wireless communications. It is envisioned to enhance signal coverage in cases where obstacles block the direct…

Information Theory · Computer Science 2021-03-10 Kun Chen-Hu , George C. Alexandropoulos , Ana García Armada

Equipping millimeter wave (mmWave) systems with full-duplex capability would accelerate and transform next-generation wireless applications and forge a path for new ones. Full-duplex mmWave transceivers could capitalize on the already…

Signal Processing · Electrical Eng. & Systems 2020-09-15 Ian P. Roberts , Jeffrey G. Andrews , Hardik B. Jain , Sriram Vishwanath

In this article, the performance of a fixed grid network is examined for various modulation formats to estimate the system's capacity and spectral efficiency. The optical In-phase Quadrature Modulator structure is used to build a fixed grid…

Networking and Internet Architecture · Computer Science 2023-10-20 Adarsha M , S. Malathi , Santosh Kumar

As communication systems that employ millimeter wave (mmWave) frequency bands must use large antenna arrays to overcome the severe propagation loss of mmWave signals, hybrid beamforming has been considered as an integral component of mmWave…

Signal Processing · Electrical Eng. & Systems 2022-06-28 Sung Hyuck Hong , Jaeyong Park , Sung-Jin Kim , Junil Choi

We demonstrate an optical data wavelength converter based on an electrically driven photonic molecule structure comprising two coupled active silicon microring resonators. The converter, supplied by a continuous-wave (CW) microwave drive…

Optics · Physics 2020-05-12 Hayk Gevorgyan , Anatol Khilo , Miloš A. Popović

The potential of using of millimeter wave (mmWave) frequency for future wireless cellular communication systems has motivated the study of large-scale antenna arrays for achieving highly directional beamforming. However, the conventional…

Information Theory · Computer Science 2016-05-04 Foad Sohrabi , Wei Yu

The engineering space for magnetically manipulated biomedical microrobots is rapidly expanding. This includes synthetic, bioinspired, and biohybrid designs, some of which may eventually assume clinical roles aiding drug delivery or…

Instrumentation and Detectors · Physics 2023-04-25 Michael G. Christiansen , Lucien Stöcklin , Cameron Forbrigger , Shashaank Abhinav Venkatesh , Simone Schuerle

Optically-active spin qubits have emerged as powerful quantum sensors capable of nanoscale magnetometry, yet conventional coherent sensing approaches are ultimately limited by the coherence time of the sensor, typically precluding detection…

Quantum Physics · Physics 2025-10-10 Nicole Voce , Paul Stevenson

This paper presents a high linearity PAM-4 transmitter (TX) architecture, consisting of a three-segment micro-ring modulator (MRM) and a matched CMOS driver. This architecture can drive a high-linearity 4-level pulse amplitude (PAM-4)…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Zheng Li , Chengyang Lv , Min Tan

Reconfigurable intelligent surface (RIS) based communications have emerged as a new paradigm. This letter proposes a differential reflecting modulation (DRM) scheme for RIS based communication systems. In DRM, information bits are jointly…

Signal Processing · Electrical Eng. & Systems 2020-11-04 Shuaishuai Guo , Jia Ye , Peng Zhang , Haixia Zhang , Mohamed-Slim Alouini

Reconfigurable electromagnetic structures (REMSs), such as reconfigurable reflectarrays (RRAs) or reconfigurable intelligent surfaces (RISs), hold significant potential to improve the spectral efficiency of wireless communication systems…

Signal Processing · Electrical Eng. & Systems 2025-12-16 Alexander Stutz-Tirri , Georg Schwan , Christoph Studer

Using Millimeter-Wave (mmWave) wireless communications is often named as the prime enabler for mobile interactive Extended Reality (XR), as it offers multi-gigabit data rates at millisecond-range latency. To achieve this, mmWave nodes must…

Networking and Internet Architecture · Computer Science 2025-01-16 Jakob Struye , Hany Assasa , Barend Van Liempd , Arnout Diels , Jeroen Famaey

Optical interconnects are essential for data centers and AI systems. Given the limited energy production, ultra-low energy and dense optical interconnects are required to support the exponential growth of AI systems. Here we report the…

In the age of information explosion, the conventional optical communication protocols are rapidly reaching the limits of their capacity, as almost all available degrees of freedom (e.g., wavelength, polarization) for division multiplexing…

Optics · Physics 2025-09-30 Xin Liu , Sergey A. Ponomarenko , Fei Wang , Yangjian Cai , Chunhao Liang

On-chip twisted light emitters are essential components for orbital angular momentum (OAM) communication devices, which could address the growing demand for high-capacity communication systems by providing an additional degree of freedom…

A long-standing challenge in ultrafast magnetism and in functional materials research in general, has been the generation of a universal, ultrafast stimulus able to switch between stable magnetic states. Solving it would open up many new…

Superconductivity · Physics 2024-08-12 G. De Vecchi , G. Jotzu , M. Buzzi , S. Fava , T. Gebert , M. Fechner , A. Kimel , A. Cavalleri

This work describes the architecture and implementation of a high-data-rate, energy-efficient millimeter-wave (mm-wave) waveguide solution for integration inside an Integrated Circuit (IC) package. The complete waveguide solution (together…

Signal Processing · Electrical Eng. & Systems 2020-03-30 Souradip Sarkar , Gert-Jan Stockman , Brecht Francois

A novel concept of a high-power magnetron transmitter allowing dynamic phase and power control at the frequency of locking signal is proposed. The transmitter compensating parasitic phase and amplitude modulations inherent in…

Accelerator Physics · Physics 2016-12-23 G. Kazakevich , R. Johnson , M. Neubauer , V. Lebedev , W. Schappert , V. Yakovlev

Spatial light modulators (SLMs) are central to numerous applications ranging from high-speed displays to adaptive optics, structured illumination microscopy, and holography. After decades of advances, SLM arrays based on liquid crystals can…

Optics · Physics 2019-10-23 Cheng Peng , Ryan Hamerly , Mohammad Soltani , Dirk Englund

Microwave electric (MW) field measurements utilizing Rydberg atoms have witnessed significant advancements, achieving remarkable sensitivity, albeit limited to discrete MW frequencies resonant with Rydberg states. Recently, various…

Quantum Physics · Physics 2024-07-25 Sheng-Xian Xiao , Tao Wang