Control of four-level quantum coherence via discrete spectral shaping of an optical frequency comb

Matthew C. Stowe, Avi Pe'er, Jun Ye

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Abstract

We present experiments demonstrating high-resolution and wide-bandwidth coherent control of a four-level atomic system in a diamond configuration. A femtosecond frequency comb is used to excite a specific pair of two-photon transitions in cold Rb87. The optical-phase-sensitive response of the closed-loop diamond system is studied by controlling the phase of the comb modes with a pulse shaper. Finally, the pulse shape is optimized resulting in a 256% increase in the two-photon transition rate by forcing constructive interference between the mode pairs detuned from an intermediate resonance.

Original languageEnglish
Article number203001
JournalPhysical Review Letters
Volume100
Issue number20
DOIs
StatePublished - 23 May 2008

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