Creation of coherent atomic superpositions by fractional STIRAP

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dc.creatorVitanov, N. V.
dc.creatorSuominen, K. -A.
dc.creatorShore, B. W.
dc.date1998-11-27
dc.date.accessioned2026-07-07T06:15:52Z
dc.date.available2026-07-07T06:15:52Z
dc.descriptionWe discuss a simple scheme for preparing atoms and molecules in an arbitrary preselected coherent superposition of quantum states. The technique, which we call fractional stimulated Raman adiabatic passage ({\it f-STIRAP}), is based upon (incomplete) adiabatic population transfer between an initial state $ψ_1$ and state $ψ_3$ through an intermediate state $ψ_2$. As in STIRAP, the Stokes pulse arrives before the pump pulse, but unlike STIRAP, the two pulses terminate simultaneously while maintaining a constant ratio of amplitudes. The independence of f-STIRAP from details of pulse shape and pulse area makes it the analog of conventional STIRAP in the creation of coherent superpositions of states. We suggest a smooth realization of f-STIRAP which requires only two laser pulses (which can be derived from a single laser) and at the same time ensures the automatic fulfillment of the asymptotic conditions at early and late times. Furthermore, we provide simple analytic estimates of the robustness of f-STIRAP against variations in the pulse intensity, the pulse delay, and the intermediate-state detuning, and discuss its possible extension to multistate systems.
dc.description8 pages, two-column revtex style, 4 figures; paper copies with better quality figures available upon request from the authors
dc.identifierhttps://arxiv.org/abs/quant-ph/9811079
dc.identifierhttp://arxiv.org/abs/quant-ph/9811079
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/93891
dc.subjectQuantum Physics
dc.titleCreation of coherent atomic superpositions by fractional STIRAP
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