Physics Colloquium - All things quantum, large and small

Event Date: 

Tuesday, October 22, 2013 - 4:00pm

Event Location: 

  • Broida 1640

Event Contact: 

Refreshments served at 3:40pm


Lu Sham, Professor, Department of Physics, UCSD


In applications of quantum mechanics to quantum technology, the main actor is usually a microscopic system, frequently a single particle or an atom, or a superconducting junction. A realistic study of technology applications of such a small quantum system or a manageable collection of them is a study of the designed dynamics of a microscopic system or systems under adverse conditions. This “open” system interacts with macroscopic systems, which could be a measurement instrument, a control device, or simply the dissipative environment. I will discuss two issues central to the quantum physics and technology: the establishment of quantum correlation between two distant systems via a many-particle messenger and the preservation of coherence between quantum states. The attempt is to illustrate the practicality and music of quantum mechanics that the small and large systems together are capable of making.

Lu Sham