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Practical and efficient experimental characterization of multiqubit stabilizer states

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Chiara Greganti, Marie-Christine Roehsner, Stefanie Barz, Mordecai Waegell, Philip Walther

Quantum Physics · Submitted 23 Feb 2015

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

The authors' main claim Our approach allows simultaneous extraction of information about the fidelity, the entanglement, and the nonlocality of the state and thus is of high practical relevance.

how it is stated · asserted 1.00 read the record →

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arXiv ID1502.06549 (version 1)
Pith ID3CAQ2RNE, Pith's permanent record of this paper and its review
CitationChiara Greganti, Marie-Christine Roehsner, Mordecai Waegell, Philip Walther, Stefanie Barz. "Practical and efficient experimental characterization of multiqubit stabilizer states." arXiv:1502.06549 (2015). https://pith.science/paper/3CAQ2RNE
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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.

Open the compiled record

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,854 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.17 · human participants 0.02 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.22 · compares with prior results 0.14 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

Vast developments in quantum technology have enabled the preparation of quantum states with more than a dozen entangled qubits. The full characterization of such systems demands distinct constructions depending on their specific type and the purpose of their use. Here we present a method that scales linearly with the number of qubits for characterizing stabilizer states. Our approach allows simultaneous extraction of information about the fidelity, the entanglement, and the nonlocality of the state and thus is of high practical relevance. We demonstrate the efficient applicability of our method by performing an experimental characterization of a photonic four-qubit cluster state and three- and four-qubit Greenberger-Horne-Zeilinger states. Our scheme can be directly extended to larger-scale quantum information tasks.

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 Vast developments in quantum technology have enabled the preparation of quantum states with more than a dozen entangled qubits. background 1.00 0.05 0.02 asserted 1.00
s1 The full characterization of such systems demands distinct constructions depending on their specific type and the purpose of their use. background 0.83 0.06 0.04 asserted 1.00
s2 Here we present a method that scales linearly with the number of qubits for characterizing stabilizer states. contribution 0.89 0.89 0.58 asserted 1.00
s3 Our approach allows simultaneous extraction of information about the fidelity, the entanglement, and the nonlocality of the state and thus is of high practical relevance. interpretation 0.80 0.71 0.43 asserted 1.00
s4 We demonstrate the efficient applicability of our method by performing an experimental characterization of a photonic four-qubit cluster state and three- and four-qubit Greenberger-Horne-Zeilinger states. contribution 0.48 0.97 0.11 asserted 1.00
s5 Our scheme can be directly extended to larger-scale quantum information tasks. future work 0.59 0.32 0.15 asserted 0.56

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

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

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

Vast developments in quantum technology have enabled the preparation of quantum states with more than a dozen entangled qubits. The full characterization of such systems demands distinct constructions depending on their specific type and the purpose of their use. Here we present a method that scales linearly with the number of qubits for characterizing stabilizer states. Our approach allows simultaneous extraction of information about the fidelity, the entanglement, and the nonlocality of the state and thus is of high practical relevance. We demonstrate the efficient applicability of our method by performing an experimental characterization of a photonic four-qubit cluster state and three- and four-qubit Greenberger-Horne-Zeilinger states. Our scheme can be directly extended to larger-scale quantum information tasks.

Human review

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What this paper does with the arXiv papers it cites

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

What it cites · 2 sentences without a confident label

Cites as background 1 paper
  • In the Hilbert space of $N$ qubits, nonclassical structures related to entanglement, contextuality, and nonlocality were recently introduced [ref] , which enable addressing foundational quantum physics topics as well as the characterization of states useful for quantum information applications.

    Nonclassical Structures within the N-qubit Pauli Group · Theory · 0.80

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