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Coherent Control of Ultracold Collisions with Chirped Light: Direction Matters

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M.J. Wright, J.A. Pechkis, J.L. Carini, S. Kallush, R. Kosloff, P.L. Gould

Atomic Physics · Submitted 7 Dec 2006

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim For certain center frequencies of the chirp, the rate of inelastic trap-loss collisions induced by negatively chirped light is dramatically suppressed compared to the case of a positive chirp.

how it is stated · asserted 1.00 read the record →

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arXiv IDphysics/0612071 (version 1)
Pith IDA5EWNCMG, Pith's permanent record of this paper and its review
CitationJ.A. Pechkis, J.L. Carini, M.J. Wright, P.L. Gould, R. Kosloff, S. Kallush. "Coherent Control of Ultracold Collisions with Chirped Light: Direction Matters." arXiv:physics/0612071 (2006). https://pith.science/paper/A5EWNCMG
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,321 input tokens.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.11 · human participants 0.01 · controlled comparison 0.76 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.65 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

We demonstrate the ability to coherently control ultracold atomic Rb collisions using frequency-chirped light on the nanosecond time scale. For certain center frequencies of the chirp, the rate of inelastic trap-loss collisions induced by negatively chirped light is dramatically suppressed compared to the case of a positive chirp. We attribute this to a fundamental asymmetry in the system: an excited wavepacket always moves inward on the attractive molecular potential. For a positive chirp, the resonance condition moves outward in time, while for a negative chirp, it moves inward, in the same direction as the excited wavepacket; this allows multiple interactions between the wavepacket and the light, enabling the wavepacket to be returned coherently to the ground state. Classical and quantum calculations support this interpretation.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We demonstrate the ability to coherently control ultracold atomic Rb collisions using frequency-chirped light on the nanosecond time scale. contribution 0.98 0.96 0.20 asserted 1.00
s1 For certain center frequencies of the chirp, the rate of inelastic trap-loss collisions induced by negatively chirped light is dramatically suppressed compared to the case of a positive chirp. result 1.00 0.91 0.60 asserted 1.00
s2 We attribute this to a fundamental asymmetry in the system: an excited wavepacket always moves inward on the attractive molecular potential. interpretation 1.00 0.42 0.30 asserted 0.89
s3 For a positive chirp, the resonance condition moves outward in time, while for a negative chirp, it moves inward, in the same direction as the excited wavepacket; this allows multiple interactions between the wavepacket and the light, enabling the wavepacket to be returned coherently to the ground state. interpretation 1.00 0.62 0.39 asserted 0.97
s4 Classical and quantum calculations support this interpretation. method 0.48 0.73 0.05 asserted 1.00

What kind of paper the classifier reports this is: empirical study 0.97 · evidence from observation or experiment 0.99.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

We demonstrate the ability to coherently control ultracold atomic Rb collisions using frequency-chirped light on the nanosecond time scale. For certain center frequencies of the chirp, the rate of inelastic trap-loss collisions induced by negatively chirped light is dramatically suppressed compared to the case of a positive chirp. We attribute this to a fundamental asymmetry in the system: an excited wavepacket always moves inward on the attractive molecular potential. For a positive chirp, the resonance condition moves outward in time, while for a negative chirp, it moves inward, in the same direction as the excited wavepacket; this allows multiple interactions between the wavepacket and the light, enabling the wavepacket to be returned coherently to the ground state. Classical and quantum calculations support this interpretation.

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