1997
DOI: 10.1103/physrevlett.78.2716
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Temporal Coherent Control in Two-Photon Transitions: From Optical Interferences to Quantum Interferences

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Cited by 190 publications
(126 citation statements)
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“…Very rapid, suboptical-cycle modulations in the photoelectron and D + 2 yields result from the combination of optical interferences (two IR pulses) and quantum interferences of electronic wavepackets (i.e., 9ω + ω and 11ω − ω interfering pathways), as the phase of the control IR pulse changes relative to the pump VUV + IR pulse. Half-a-cycle periodicity suggests that the two-pathway quantum interferences play an important role in this particular case (29). The deep, full-cycle modulation of the dissociative D + yield is simply a result of the optical interferences between the pump and control IR pulses (both 30 fs long) that lead to bond-softening of the ground state of D + 2 and ionization of the D p 2 excited states ∼10 fs after the pump pulse.…”
Section: Methodsmentioning
confidence: 99%
“…Very rapid, suboptical-cycle modulations in the photoelectron and D + 2 yields result from the combination of optical interferences (two IR pulses) and quantum interferences of electronic wavepackets (i.e., 9ω + ω and 11ω − ω interfering pathways), as the phase of the control IR pulse changes relative to the pump VUV + IR pulse. Half-a-cycle periodicity suggests that the two-pathway quantum interferences play an important role in this particular case (29). The deep, full-cycle modulation of the dissociative D + yield is simply a result of the optical interferences between the pump and control IR pulses (both 30 fs long) that lead to bond-softening of the ground state of D + 2 and ionization of the D p 2 excited states ∼10 fs after the pump pulse.…”
Section: Methodsmentioning
confidence: 99%
“…To single out some special results in the extremely broad field of interference, we point to recent observations using two-photon pulse transition [94] in which a differentiation was achieved between interferences due to temporal overlap (with finite pulse-width) and quantum interference caused by delay. The (component-specific) topological phase in wave functions has been measured, following the proposal of Berry in [9], by neutron interferometry in a number of works, e.g., [123,124] with continual improvements in the technique.…”
Section: Aspects Of Phase In Moleculesmentioning
confidence: 99%
“…In some recently studied cases these might be a superposition of a good ten or so energy eigen-states. Thanks to the availability of short, femtosecond laser pulses both the control of reactions by coherent light ( [16], [84]- [94]) and the probing of phases in a wave packet are now experimental possibilities ( [19], [95] - [97]). With short duration excitations the initial form of the wave packet is a real "doorway state" ( [98]- [100]) and this develops phases for each of its component amplitudes as the wave-packet evolves.…”
Section: Introduction and Preview Of The Chaptermentioning
confidence: 99%
“…The potential of phase locked pulse sequences as a novel spectroscopic tool was demonstrated on single-photon molecular transitions [34] and discussed in [35]. Later, shaped weak field pulses were employed in order to control multi-photon transitions in atoms [36][37][38][39], molecules [40] and solid state systems [41,42]. It was pointed out that subtle differences due to the relative optical phase either produced by optical phase shifts or time delay [43,44] can control the outcome of the experiment.…”
Section: Pulse Sequence Experimentsmentioning
confidence: 99%