Doppler-free coherent-control spectroscopy with a colliding pair of shaped pulses

Abstract

We demonstrate the use of the ultrafast spatial coherent-control method to resolve the fine-structure two-photon transitions of atomic rubidium. Counter-propagating ultrafast optical pulses with spectral phase and amplitude programmed with our optimized solutions successfully induced the two-photon transitions through $5S_{1/2}$-$5P_{1/2}$-$5D$ and $5S_{1/2}$-$5P_{3/2}$-$5D$ pathways, both simultaneously and at distinct spatial locations. Three different pulse-shaping solutions are introduced that combine amplitude shaping, which avoids direct intermediate resonances, and phase programming, which enables the remaining spectral components to be coherently interfered through the targeted transition pathways. Experiments were performed with a room-temperature vapor cell, and the results agree well with theoretical analysis.

7 pages, 4 figures

References in corpus (5)

• Fast and robust two-qubit gates for scalable ion trap quantum computing
• Control of Four-Level Quantum Coherence via Discrete Spectral Shaping of an Optical Frequency Comb
• High-Precision Spectroscopy with Counter-Propagating Femtosecond Pulses
• Spatial and Spectral Coherent Control with Frequency Combs
• Coherent Control of Resonant Two-Photon Transitions by Counter-Propagating Ultrashort Pulse Pairs