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Sideband Rabi spectroscopy of finite-temperature trapped Bose gases

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Baptiste Allard, Matteo Fadel, Roman Schmied, Philipp Treutlein

Quantum Physics · Submitted 15 Mar 2016

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

The authors' main claim Together with sensitive atom-counting, this constitutes a feasible technique to count single excited atoms of a BEC and to determine the temperature of nearly pure condensates.

how it is stated · hedged possibility 0.61 read the record →

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arXiv ID1603.04699 (version 1)
Pith IDWGJ5J6WL, Pith's permanent record of this paper and its review
CitationBaptiste Allard, Matteo Fadel, Philipp Treutlein, Roman Schmied. "Sideband Rabi spectroscopy of finite-temperature trapped Bose gases." arXiv:1603.04699 (2016). https://pith.science/paper/WGJ5J6WL
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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, 4,980 input tokens.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.35 · human participants 0.02 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.07 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

We use Rabi spectroscopy to explore the low-energy excitation spectrum of a finite-temperature Bose gas of rubidium atoms across the phase transition to a Bose-Einstein condensate (BEC). To record this spectrum, we coherently drive the atomic population between two spin states. A small relative displacement of the spin-specific trapping potentials enables sideband transitions between different motional states. The intrinsic non-linearity of the motional spectrum, mainly originating from two-body interactions, makes it possible to resolve and address individual excitation lines. Together with sensitive atom-counting, this constitutes a feasible technique to count single excited atoms of a BEC and to determine the temperature of nearly pure condensates. As an example, we show that for a nearly pure BEC of N = 800 atoms the first excited state has a population of less than 5 atoms, corresponding to an upper bound on the temperature of 30 nK.

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 use Rabi spectroscopy to explore the low-energy excitation spectrum of a finite-temperature Bose gas of rubidium atoms across the phase transition to a Bose-Einstein condensate (BEC). contribution 0.99 0.96 0.07 asserted 0.99
s1 To record this spectrum, we coherently drive the atomic population between two spin states. method 1.00 0.93 0.02 asserted 0.99
s2 A small relative displacement of the spin-specific trapping potentials enables sideband transitions between different motional states. method 1.00 0.53 0.03 asserted 0.98
s3 The intrinsic non-linearity of the motional spectrum, mainly originating from two-body interactions, makes it possible to resolve and address individual excitation lines. method 0.77 0.51 0.08 asserted 0.92
s4 Together with sensitive atom-counting, this constitutes a feasible technique to count single excited atoms of a BEC and to determine the temperature of nearly pure condensates. interpretation 0.50 0.43 0.47 hedged possibility 0.61
s5 As an example, we show that for a nearly pure BEC of N = 800 atoms the first excited state has a population of less than 5 atoms, corresponding to an upper bound on the temperature of 30 nK. result 1.00 0.96 0.36 asserted 0.99

What kind of paper the classifier reports this is: method or tool 0.75 · evidence from observation or experiment 1.00.

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  • references and citing sentences
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  • T body sentences
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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 use Rabi spectroscopy to explore the low-energy excitation spectrum of a finite-temperature Bose gas of rubidium atoms across the phase transition to a Bose-Einstein condensate (BEC). To record this spectrum, we coherently drive the atomic population between two spin states. A small relative displacement of the spin-specific trapping potentials enables sideband transitions between different motional states. The intrinsic non-linearity of the motional spectrum, mainly originating from two-body interactions, makes it possible to resolve and address individual excitation lines. Together with sensitive atom-counting, this constitutes a feasible technique to count single excited atoms of a BEC and to determine the temperature of nearly pure condensates. As an example, we show that for a nearly pure BEC of N = 800 atoms the first excited state has a population of less than 5 atoms, corresponding to an upper bound on the temperature of 30 nK.

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