Quantum metrology with nonclassical states of atomic ensembles

L Pezze, A Smerzi, MK Oberthaler, R Schmied… - Reviews of Modern …, 2018 - APS
Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

Quantum trajectories and open many-body quantum systems

AJ Daley - Advances in Physics, 2014 - Taylor & Francis
The study of open quantum systems–microscopic systems exhibiting quantum coherence
that are coupled to their environment–has become increasingly important in the past years …

[HTML][HTML] Entanglement-enhanced quantum metrology: from standard quantum limit to Heisenberg limit

J Huang, M Zhuang, C Lee - Applied Physics Reviews, 2024 - pubs.aip.org
Entanglement-enhanced quantum metrology explores the utilization of quantum
entanglement to enhance measurement precision. When particles in a probe are prepared …

One-axis twisting as a method of generating many-body Bell correlations

M Płodzień, M Lewenstein, E Witkowska… - Physical Review Letters, 2022 - APS
We demonstrate that the one-axis twisting (OAT), a versatile method of creating nonclassical
states of bosonic qubits, is a powerful source of many-body Bell correlations. We develop a …

Mixed localized matter wave solitons in Bose–Einstein condensates with time-varying interatomic interaction and a time-varying complex harmonic trap** potential

E Kengne, WM Liu - Chaos, Solitons & Fractals, 2024 - Elsevier
We study the generation of mixed localized matter wave solitons in the quasi-one-
dimensional Gross–Pitaevskii equation with a complex potential (model equation) that …

Scalable quantum metrology via recursive optimization

J Zhou, J Huang, C Lee - Physical Review Applied, 2024 - APS
Achieving higher precision in quantum metrology demands the optimization of both
entangled-state preparation and readout processes. However, direct machine optimization …

Quantum metrology with spin cat states under dissipation

J Huang, X Qin, H Zhong, Y Ke, C Lee - Scientific reports, 2015 - nature.com
Quantum metrology aims to yield higher measurement precisions via quantum techniques
such as entanglement. It is of great importance for both fundamental sciences and practical …

Efficient generation of spin cat states with twist-and-turn dynamics via machine optimization

J Huang, H Huo, M Zhuang, C Lee - Physical Review A, 2022 - APS
Spin cat states are promising candidates for achieving Heisenberg-limited quantum
metrology. It is suggested that spin cat states can be generated by adiabatic evolution …

Mesoscopic quantum superpositions in bimodal Bose-Einstein condensates: Decoherence and strategies to counteract it

K Pawłowski, M Fadel, P Treutlein, Y Castin, A Sinatra - Physical Review A, 2017 - APS
We study theoretically the interaction-induced generation of mesoscopic coherent spin state
superpositions (small-particle-number cat states) from an initial coherent spin state in …