All talks at Winchester Discovery Centre, Jewry Street 7.15 for 7.45 unless otherwise advertised.
Licensed bar serving hot drinks, cakes and snacks. No charge to attend. Contributions welcome.
Mon Feb 4th 2019 “The Origin of the First Supermassive Black Holes in the Universe” Dr Dan Whalen
Most massive galaxies in the universe today harbor supermassive black holes (SMBHs), with masses from a few million to tens of billions of solar masses. But very bright quasars powered by billion solar mass BHs have now been discovered at redshift z ~ 7, or just 775 million years after the Big Bang. They pose serious challenges to current theories of cosmological structure formation because it is not known how BHs this massive appeared by such early epochs. I will discuss the possible origins of the first quasars and present new supercomputer simulations of how they could form in the first billion years of the universe.
Dan’s biography: PhD University of Illinois, Urbana Champaign 2006 Research Fellow, Los Alamos National Laboratory (LANL) 2006 – 2009 McWilliams Fellow in Cosmology, Carnegie Mellon University 2009 – 2012 Research Scientist, LANL 2012 – 2014 Deputy Group Leader, Institute for Theoretical Astrophysics, Univ of Heidelberg 2014 – 2016 Senior Lecturer, Institute of Cosmology and Gravitation, University of Portsmouth 2016 On
March 4th “What is a quantum internet?” Daryus Chandra
As we shrink the size of transistors further and further, the inevitable quantum phenomenon on nano-scale level starts to prevail. In quantum regime, the general rules of thumb for developing classical computers that we currently have will no longer valid. However, the weird and often-strange quantum properties can be exploited to build quantum computers, which exhibit a superpower computing capability. While such quantum computers may impose the threat of jeopardizing most of our encryption systems, the quantum mechanical properties also offer the wonderful solution for establishing an absolute-secure and unbreachable quantum communication system, even with the advent of quantum computers. With the emerge of quantum technologies, such as quantum computers and quantum communications, one may ask a judicious question, “Can we build the so-called ‘Quantum Internet?'” In this talk, we will try to explore this problem by demystifying the concept of quantum computation and quantum communication accompanied by the recent research progress in this area. Finally, you may wonder if the answer to the question is in the superposition between ‘yes’ and ‘no’.
Daryus Chandra received his bachelor of engineering (B.Eng.) and master of engineering (M.Eng.) degree in Electronics Engineering from a five-year integrated bachelor-master programme, Universitas Gadjah Mada, Indonesia, in 2013 and 2014, respectively. After that, he spent one year serving as a Research and Teaching Assistant at the same institution. Since September 2015, he joined the Next Generation Wireless Research Group, University of Southampton for pursuing PhD degree. His research interests revolve around quantum information, quantum communication, and quantum error-correction codes. More specifically, the implementation of the quantum error-correction codes for maintaining the reliability of quantum computation and quantum communication system for the near-future quantum computers and quantum internet. Currently, he is also a course instructor managed by Lifelong Learning Department, University of Southampton, delivering an introduction course of quantum computation and communication to public audiences.
April 1st “The very, very early universe”. Prof David Wands