Title:Quantum Journal Club: Control and Coherence of the Optical Transition of Single
Speaker: Li He Tsinghua University
Time: 2014-05-15 15:00-2014-05-15 16:00
Venue:FIT 1-222


We demonstrate coherent control of the optical transition of single nitrogen-vacancy defect centers in diamond. On applying short resonant laser pulses, we observe optical Rabi oscillations with a half period as short as 1 ns, an order of magnitude shorter than the spontaneous emission time. By studying the decay of Rabi oscillations, we find that the decoherence is dominated by laser-induced spectral jumps. By using a low-power probe pulse as a detuning sensor and applying postselection, we demonstrate that spectral diffusion can be overcome in this system to generate coherent photons.

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