Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:0908.0480 · Communications in Mathematical Physics

The Measurement Process in Local Quantum Physics and the EPR Paradox

Sergio Doplicher

Published Jul 28, 2017• 15 citations
arXivHTMLPDF
DOI
10.1007/s00220-017-2949-z

Related papers

On EPR paradox, and violation of the Bell inequality in local quantum mechanics

V. K. Ignatovich

•Jan 25, 2011•0 citations

Local Quantum Measurement and Relativity

Christian Beck

Fundamental theories of physics•Jan 1, 2021•7 citations

Pulse-resolved measurement of continuous-variable EPR entanglement with shaped local oscillators

Ami Shinjo, Takuya Katayama, Yujiro Eto +1 more

The generation of strong entanglement is important not only for the fundamental physics such as demonstrating EPR paradox [1] and steering [2] but also for applications such as the quantum information processing and quantum key distribution.

The Japan Society of Applied Physics•Sep 18, 2018•0 citations

Overlooked local interactions in the EPR Paradox

N.O. Chudak, O. S. Potiienko, I. V. Sharph +1 more

Five objections to the conventional arguments underlying the EPR \enquote{paradox} are presented. It is shown that for entangled subsystems the formation of the post-measurement state necessarily involves local interactions affecting both subsystems, contradicting standard EPR assumptions. Correlations between measurements by remote apparatuses are shown to be consistent with relativistic principles. For entangled eigenstates of total momentum or total spin, eliminating redundant degrees of freedom in analogy with generalized Hamiltonian dynamics prevents the emergence of the EPR \enquote{paradox}. A different paradox is identified for a quantum charged particle, whose electric field is shown to be determined by potential configurations encoded in the quantum state rather than by actual measurement events.

arXiv:2601.04230•Jan 3, 2026•0 citations

Quantum theory, EPR experiments and locality

M. A. B. Whitaker, J.G. Dennison

Physics Letters A•Dec 1, 1988•4 citations

Einstein-Podolsky-Rosen Experiment with Two Bose-Einstein Condensates

Paolo Colciaghi, Yifan Li, Philipp Treutlein +1 more

In 1935, Einstein, Podolsky, and Rosen (EPR) conceived a gedanken experiment which became a cornerstone of quantum technology and still challenges our understanding of reality and locality today.While the experiment has been realized with small quantum systems, a demonstration of the EPR paradox with massive many-particle systems remains an important challenge, as such systems are particularly closely tied to the concept of local realism in our everyday experience and may serve as probes for new physics at the quantum-to-classical transition.In this work we report an EPR experiment with two spatially separated Bose-Einstein condensates, each containing about 700 rubidium atoms.Entanglement between the condensates results in strong correlations of their collective spins, allowing us to demonstrate the EPR paradox between them.Our results represent the first observation of the EPR paradox with spatially separated, massive many-particle systems.They show that the conflict between quantum mechanics and local realism does not disappear as the system size increases to more than a thousand massive particles.Furthermore, EPR entanglement in conjunction with individual manipulation of the two condensates on the quantum level, as we demonstrate here, constitutes an important resource for quantum metrology and information processing with many-particle systems.

Physical Review X•May 30, 2023•46 citations
Five objections to the conventional arguments underlying the EPR \enquote{paradox} are presented. It is shown that for entangled subsystems the formation of the post-measurement state necessarily involves local interactions affecting both subsystems, contradicting standard EPR assumptions. Correlations between measurements by remote apparatuses are shown to be consistent with relativistic principles. For entangled eigenstates of total momentum or total spin, eliminating redundant degrees of freedom in analogy with generalized Hamiltonian dynamics prevents the emergence of the EPR \enquote{paradox}. A different paradox is identified for a quantum charged particle, whose electric field is shown to be determined by potential configurations encoded in the quantum state rather than by actual measurement events.
In 1935, Einstein, Podolsky, and Rosen (EPR) conceived a gedanken experiment which became a cornerstone of quantum technology and still challenges our understanding of reality and locality today.While the experiment has been realized with small quantum systems, a demonstration of the EPR paradox with massive many-particle systems remains an important challenge, as such systems are particularly closely tied to the concept of local realism in our everyday experience and may serve as probes for new physics at the quantum-to-classical transition.In this work we report an EPR experiment with two spatially separated Bose-Einstein condensates, each containing about 700 rubidium atoms.Entanglement between the condensates results in strong correlations of their collective spins, allowing us to demonstrate the EPR paradox between them.Our results represent the first observation of the EPR paradox with spatially separated, massive many-particle systems.They show that the conflict between quantum mechanics and local realism does not disappear as the system size increases to more than a thousand massive particles.Furthermore, EPR entanglement in conjunction with individual manipulation of the two condensates on the quantum level, as we demonstrate here, constitutes an important resource for quantum metrology and information processing with many-particle systems.