FREE COFFEE AND DONUTS PROVIDED!

WHAT: Simulation of Quantum Operations in a Three-Level System

WHO: Jason Lee (George Mason University)

WHEN: 3:40PM FRI 26 JUN 09

WHERE: NICH 435

ABSTRACT: Lambda-type three-level systems have been studied as potential qubits for quantum computation and quantum memory.  Quantum state manipulation through optically controlled quantum operation plays an important role in these settings.  In order to understand the physical processes involved and to analyze the state and operation fidelity we developed a theoretical model based on semi-classical theory that describes the state evolution of the three-level atom driven by laser pulses.  We investigated the fidelity of the quantum operations, which is controlled by laser and atomic parameters in the process, including atomic coherence time, initial state, frequency detuning, amplitude, and phase of the laser control pulses.  The simulation encompasses realistic parameters and serves as a powerful template for exploring a broader range of processes in three-level systems such as quantum gates.