Parity-Time (PT) symmetric Hamiltonians and open (classical and quantum) systems

Dr. Yogesh Joglekar (host Bender/Henriksen), IUPUI, Indianapolis
November 9, 2017 at 3:00 pm
241 Compton
Event Description 

Parity and time-reversal (PT) systems are open systems with balanced gain and loss. Their dynamics are described by an effective non-Hermitian Hamiltonian, and they undergo PT breaking transition when the strength of the gain-loss term exceeds a threshold. This transition is also observed in purely dissipative systems with localized losses. After a brief the history of PT-symmetric quantum theory led by Carl Bender, I will describe properties of such classical and quantum systems with static and Floquet Hamiltonians. I will present experimental results in ultracold atoms and in synthetic electrical circuits showing this transition, and theoretical predictions for behavior of quantum information across this transition.

Coffee: 2:30 pm, 241 Compton