Driven by the growth of AI Training and Inference applications, data center optical networks continue to penetrate into the compute fabric where electrical interfaces struggle to keep pace with increasing bandwidth interconnect requirements.

The energy efficiency of computing has improved by a factor of more than a trillion since the electronic computer was invented.  This astounding energy efficiency scaling is creating the opportunity for battery-free sensing and computing systems that are powered by radio waves and other ambient energy sources.  Such devices can be implanted inside the body, permanently built into structures, or deployed at scales where batteries and wires are infeasible.  I will describe my group’s work aiming to enable battery-free, perpetual sensing and computing systems.  I will descr

Data centers consume 1-2% of the world’s electricity, and concerns about their energy use are growing as the world becomes increasingly interconnected and digitalized. Few data center operators publicly report electricity use, necessitating the use of mathematical models for generating the sector-level energy use estimates that guide public policy and shape public perceptions.

The second quantum revolution, the transition from quantum theory to quantum engineering, is leading us towards practical quantum computing. However, there are still many obstacles hindering practical quantum computing. In this talk, I will briefly review the challenges and research opportunities in the state-of-the-art quantum computing engineering technology stacks, including quantum computing devices, peripheral control hardware architecture, compiler design/optimization, programming language design, etc.

Quantum computing promises to transform society in all aspects, from the rapid discovery of new drugs and vaccines to improving supply chain efficiency, real-time optimization of transportation and navigation, and the secure storage and transmission of personal information. While there are several contenders for the physical implementation of quantum computers, integrated photonics is advantageous for several reasons.

Photonic isolators are essentially diodes for optical signals, and as such they prevent backward propagation of light as needed, most frequently in front of lasers as protection from reflected power. After introducing the phenomenon of non-reciprocity, the operation of commercial (bulk) isolators will be discussed, including magneto-optical Faraday rotation which is prevalent in iron garnets.  Although commercial isolators have their own markets, future hyperscale data needs are moving ever closer to integrated photonics as pluggable transceivers are replaced by co-packaged optics.

In this talk I will review advances in optical frequency comb implementations of so-called electro-optical (EO) frequency combs, based on phase and intensity modulation of a stable carrier. Stable frequency comb operation spanning over an octave and subsequent self-referencing was recently achieved by the NIST group (Beha et al., 2017). This inspires different implementations of EO frequency combs, including fiber based systems and photonic integrated circuit approaches.

The development of computing systems able to address our ever-increasing needs, especially as we reach the end of CMOS transistor scaling, requires truly novel methods of computing. My research draws inspiration from biology, rethinks the digital/analog boundary, and challenges conventional wisdom, which typically guides how we perform computation, by reimagining the role of time. In this talk, I first introduce a computational temporal logic that sets the foundation for temporal computing.

There is great promise and potential in artificial intelligence (AI), but if such technologies are built and trained by humans, are they capable of bias?

Absolutely, says William Wang, the Duncan and Suzanne Mellichamp Chair in Artificial Intelligence and Designs at UC Santa Barbara, who will give the virtual talk “What is Responsible AI,” at 4 p.m. Tuesday, Jan. 25, as part of the UCSB Library’s Pacific Views speaker series .

The Institute for Energy Efficiency at the University of California, Santa Barbara invites you to attend the annual 2019 Emerging Technologies Review on Thursday, May 16th. This all-day review (8:30-5pm) will feature several speakers, covering new developments in areas of energy and energy efficiency.

Divided into several distinct sessions, industrial and academic speakers will cover a broad range of topics in areas such as Production & Storage, Computing & Datacenter Energy Efficiency, Food-Water-Energy Nexus, and Societal Energy Infrastructure.