Evidence map›Paper›PMID 31093589›Full record

ArticlePhysical review. A2018

Optimal and secure measurement protocols for quantum sensor networks.

Zachary Eldredge, Michael Foss-Feig, Jonathan A Gross, S L Rolston, Alexey V Gorshkov

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Physical review. A, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Zachary EldredgeJoint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA.
Michael Foss-FeigJoint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA.
Jonathan A GrossCenter for Quantum Information and Control, University of New Mexico, Albuquerque, New Mexico 87131, USA.
S L RolstonJoint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA.
Alexey V GorshkovJoint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA.

Funding

Intramural NIST DOC 9999-NIST
6 · The paper itself

Abstract

Studies of quantum metrology have shown that the use of many-body entangled states can lead to an enhancement in sensitivity when compared with unentangled states. In this paper, we quantify the metrological advantage of entanglement in a setting where the measured quantity is a linear function of parameters individually coupled to each qubit. We first generalize the Heisenberg limit to the measurement of nonlocal observables in a quantum network, deriving a bound based on the multiparameter quantum Fisher information. We then propose measurement protocols that can make use of Greenberger-Horne-Zeilinger (GHZ) states or spin-squeezed states and show that in the case of GHZ states the protocol is optimal, i.e., it saturates our bound. We also identify nanoscale magnetic resonance imaging as a promising setting for this technology.

Identifiers

PMID31093589
PMCPMC6513338

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.