Quantum Initiative: Quantum Lunch

The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.

The organizing committee includes Malcolm Boshier (P-21), Lukasz Cincio (T-4), Diego Dalvit (T-4), Changhyun Ryu (P-21) , Nikolai Sinitsyn (T-4), Rolando Somma (T-4), Yigit Subasi (T-4), Christopher Ticknor (T-1), and Wojciech Zurek (T-4).

For more information, or to nominate a speaker, contact Yigit Subasi or Lukasz Cincio.

To add your name to the Quantum Lunch email list, contact Kacy Hopwood.

Thursday June 29, 2017
12:30 PM - 2:00 PM

Speaker: Juan Pablo Paz (University of Buenos Aires)

Technical Host: Lukasz Cincio

TOPIC: Fundamental limit for cooling of driven quantum systems

Abstract
I will study the asymptotic behaviour of a class of quantum refrigerators consisting of a parametrically driven network of oscillators which is coupled with an arbitrary number of thermal reservoirs. I will describe the fundamental process that enforces the validity of the third law of thermodynamics for this type of systems. This process, which prevents us from cooling a cold reservoir below a certain (non universal) temperature, consists of the non resonant creation of excitations pairs in the reservoirs and it is closely related with the dynamical Casimir effect. I will show that the results can be applied to understand, in a simple way, the fundamental limits for laser cooling of a single oscillator.