Tuesday, July 9, 2013

1307.1704 (Sriram Ganeshan et al.)

An Exact Classification of Landau-Majorana-Stückelberg-Zener
Resonances By Floquet Determinants

Sriram Ganeshan, Edwin Barnes, S. Das Sarma
Recent experiments have shown that Landau-Majorana-Stuckelberg-Zener (LMSZ) interferometry is a powerful tool for demonstrating and exploiting quantum coherence not only in atomic systems but also in a variety of solid state quantum systems such as spins in quantum dots, superconducting qubits, and nitrogen vacancy centers in diamond. In this work, we propose and develop a general (and, in principle, exact) theoretical formalism to identify and characterize the interference resonances that are the hallmark of LMSZ interferometry. Unlike earlier approaches, our scheme does not require any approximations, allowing us to uncover important and previously unknown features of the resonance structure. We also discuss the experimental observability of our results.
View original: http://arxiv.org/abs/1307.1704

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