Quantum Future Seminars

OIST Quantum Future Seminars
February 2020


 

"Is There a Perfect Cipher?"

Artur Ekert, University of Oxford, CQT

Human desire to communicate secretly is at least as old as writing itself and goes back to the beginnings of our civilisation. The struggle between code-makers and code-breakers had several times affected the course of history and the formidable mathematical task of breaking increasingly more complicated ciphers contributed to the development of computer science. I will describe briefly how people protected information in the past and how it is done today. Physicists play increasingly more important role in this field because the process of sending and storing of information is always carried out by physical means, for example, by sound, light or radio waves. In particular, eavesdropping can be viewed as a measurement on a physical object, in this case the carrier of the information. What the eavesdropper can measure, and how, depends exclusively on the laws of physics. Using quantum phenomena physicists managed to design and to implement a system which is regarded to be unbreakable. I will outline the basic principles behind quantum cryptography.

"Beyond the Future of Quantum Technology"

Chune Yang Lum, SpeQtral

"The joy of controlling quantum phenomena with the world’s first quantum-bit element"

Yasunobu Nakamura, University of Tokyo