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Quantum Information Processing with Continuous Variables and Atomic Ensembles [PDF]

open access: yes, 2011
Quantum information theory promises many advances in science and technology. This thesis presents three different results in quantum information theory. The first result addresses the theoretical foundations of quantum metrology.
Zwierz, Marcin
core   +7 more sources

Observation of Nagaoka polarons in a Fermi–Hubbard quantum simulator [PDF]

open access: yesNature, 2023
Quantum interference can deeply alter the nature of many-body phases of matter1. In the case of the Hubbard model, Nagaoka proved that introducing a single itinerant charge can transform a paramagnetic insulator into a ferromagnet through path ...
M. Lebrat   +9 more
semanticscholar   +1 more source

Observation of Non-Hermitian Edge Burst in Quantum Dynamics. [PDF]

open access: yesPhysical Review Letters, 2023
The non-Hermitian skin effect, by which the eigenstates of the Hamiltonian are predominantly localized at the boundary, has revealed a strong sensitivity of non-Hermitian systems to the boundary condition.
Lei Xiao   +6 more
semanticscholar   +1 more source

Quantum Measurement as Pragmatic Information Transfer: Observer Effects on (S)objective Reality Formation

open access: yesJournal of Anomalous Experience and Cognition, 2022
Objective. In the research presented here, quantum measurement is conceptualized as pragmatic information transfer when an intentional observer perceives motive-relevant quantum-based outcomes. Owing to the nature of pragmatic information as described in
Markus A. Maier   +2 more
doaj   +1 more source

Observation of many-body scarring in a Bose-Hubbard quantum simulator [PDF]

open access: yesPhysical Review Research, 2022
The ongoing quest for understanding nonequilibrium dynamics of complex quantum systems underpins the foundation of statistical physics as well as the development of quantum technology.
Guo-Xian Su   +9 more
semanticscholar   +1 more source

Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion [PDF]

open access: yesNature Communications, 2021
Quantum phase transitions (QPTs) are usually associated with many-body systems in the thermodynamic limit when their ground states show abrupt changes at zero temperature with variation of a parameter in the Hamiltonian.
M. Cai   +9 more
semanticscholar   +1 more source

Observation of non-Hermitian topological Anderson insulator in quantum dynamics [PDF]

open access: yesNature Communications, 2021
Disorder and non-Hermiticity dramatically impact the topological and localization properties of a quantum system, giving rise to intriguing quantum states of matter.
Quan-Hui Lin   +5 more
semanticscholar   +1 more source

Emergence of the Born rule in quantum optics [PDF]

open access: yesQuantum, 2020
The Born rule provides a fundamental connection between theory and observation in quantum mechanics, yet its origin remains a mystery. We consider this problem within the context of quantum optics using only classical physics and the assumption of a ...
Brian R. La Cour, Morgan C. Williamson
doaj   +1 more source

Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide [PDF]

open access: yesnpj Quantum Information, 2022
Quantum states of light and matter can be manipulated on the nanoscale to provide a technological resource for aiding the implementation of scalable photonic quantum technologies. Experimental progress relies on the quality and efficiency of the coupling
Hamidreza Siampour   +9 more
semanticscholar   +1 more source

Direct observation of the dead-cone effect in quantum chromodynamics [PDF]

open access: yesNature, 2021
In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD)1 ...
Alice Collaboration
semanticscholar   +1 more source

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