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20012025
most citedQuantum metrology with nonclassical states of atomic ensembles

1.7k citations · 3.2k across the 27 of their papers we have counts for

collaborators

27 papers

quant-ph2025

Observation of a Topological Berry Phase with a Single Phonon in an Ion Microtrap Array

Justin F. Niedermeyer, Nathan K. Lysne, Katherine C. McCormick +11

Controlled quantum mechanical motion of trapped atomic ions can be used to simulate and explore collective quantum phenomena and to process quantum information. Groups of cold atom…

quant-ph2022★ 88 cited

Improving Metrology with Quantum Scrambling

Zeyang Li, Simone Colombo, Chi Shu +7

Quantum scrambling describes the spreading of local information into many degrees of freedom in quantum systems. This provides the conceptual connection among diverse phenomena ran…

quant-ph2017★ 7 cited

Optimal entanglement witnesses in a split spin-squeezed Bose-Einstein condensate

Enky Oudot, Jean-Daniel Bancal, Roman Schmied +2

How to detect quantum correlations in bi-partite scenarios using a split many-body system and collective measurements on each party? We address this question by deriving entangleme…

quant-ph2017★ 28 cited

Bell correlations in a many-body system with finite statistics

Sebastian Wagner, Roman Schmied, Matteo Fadel +3

A recent experiment reported the first violation of a Bell correlation witness in a many-body system [Science 352, 441 (2016)]. Following discussions in this paper, we address here…

physics.atom-ph2017★ 15 cited

Optimised surface-electrode ion-trap junctions for experiments with cold molecular ions

Arezoo Mokhberi, Roman Schmied, Stefan Willitsch

We discuss the design and optimisation of two types of junctions between surface-electrode radiofrequency ion-trap arrays that enable the integration of experiments with sympatheti…

quant-ph2016★ 1.7k cited

Quantum metrology with nonclassical states of atomic ensembles

Luca Pezzè, Augusto Smerzi, Markus K. Oberthaler +2

Quantum technologies exploit entanglement to revolutionize computing, measurements, and communications. This has stimulated the research in different areas of physics to engineer a…