Department of Physics

Indian Institute Of Technology Madras , Chennai

Artificial atoms interacting with photons and phonons

Speaker : Dr. Baladitya Suri, Quantum Device Physics laboratory, MC2, Kemivagen 9 Chalmers University of Technology, Gothenburg, Sweden

2016-11-18

Abstract :

Superconducting quantum circuits have emerged as a promising test bed for probing phenomena involving light-matter interaction. In this talk I will mainly discuss experimental results from measurement of a 'circuit quantum electrodynamics' system – a superconducting ' transmon' qubit coupled to a superconducting lumped element microwave resonator measured at 20mK . I will discuss the basic Jaynes-Cummings Hamiltonian that describes the system, and discuss results from three experiments – viz. (a) First experimental observation of Autler-Townes splitting of 'dressed' Jaynes-Cummings levels (b) Nonlinear dependence of microwave photon occupancy in the resonator (c) Achieving coherent population trapping in a superconducting circuit. In the latter part of the talk, I will also discuss my current work in the emerging field of Quantum Acoustics, where the artificial atom interacts with surface phonons on a piezo electric substrate.

Key Speaker Dr. Baladitya Suri, Quantum Device Physics laboratory, MC2, Kemivagen 9 Chalmers University of Technology, Gothenburg, Sweden
Guests None
Place Seminar Room
Start Time 4:00 PM
Finish Time 5:00 PM
External Link None