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

Physical Review A

Problem of signal transmission via quantum correlations and Einstein incompleteness in quantum mechanics

Harald Scherer, Paul Busch

Published Mar 1, 1993• 18 citations
Publisher

Abstract

The question of (superluminal) signaling by means of quantum correlations is reconsidered and previous arguments are generalized and completed to yielding conclusive answers to the negative. Statistical analysis of the amplified input on the receiver's side shows that the state discrimination needed for defining a signal is in conflict with the linearity of quantum dynamics. Connections with fundamental issues of quantum mechanics are pointed out.

DOI
10.1103/physreva.47.1647

Related papers

Quantum Holism, Superluminality, and Einstein Causality

Peter Mittelstaedt

Within the framework of the EPR Gedankenexperiment we show that quantum mechanics is not incomplete but nonlocal and holistic. The attempt to use this quantum non-locality for the transmission of superluminal signals is exposed to serious objections which are based on very general theorems. However, we show that one of the theorems is equivalent to the impossibility of superluminal signals. Hence, the question whether superluminal EPR signals are possible can not be decided in this way.

•Sep 11, 2008•3 citations

Superluminal hidden communication as the underlying mechanism for quantum correlations: constraining models

Valerio Scarani, Nicolas Gisin

Since Bell's theorem, it is known that quantum correlations cannot be described by local variables (LV) alone: if one does not want to abandon classical mechanisms for correlations, a superluminal form of communication among the particles must be postulated. A natural question is whether such a postulate would imply the possibility of superluminal signaling. Here we show that the assumption of finite-speed superluminal communication indeed leads to signaling when no LV are present, and more generally when only LV derivable from quantum statistics are allowed. When the most general LV are allowed, we prove in a specific case that the model can be made again consistent with relativity, but the question remains open in general.

arXiv:quant-ph/0410025•Brazilian Journal of Physics•Jun 1, 2005•40 citations

Einstein-Podolsky-Rosen (EPR) Correlations and Superluminal Interactions

Luiz Carlos Ryff

The possible connection between EPR correlations and superluminal interactions, as suggested by Bell and Bohm, is discussed using simple and palpable arguments: (a) It is shown how an experiment based on time-like events can allow us to answer the question "Can a measurement performed on one of the photons of an entangled pair change the state of the other?" (b) The theorem on superluminal finite-speed causal influences and superluminal signaling, introduced by Scarani and Gisin, is reexamined. (c) It is shown how faster-than-light interactions and Lorentz transformations might peacefully coexist.

arXiv:1506.07383•Jun 24, 2015•2 citations

Can EPR-correlations be used for the transmission of superluminal signals?

Peter Mittelstaedt

In a compound quantum system with EPR–like correlations a measurement of one subsystem induces instantaneously changes of the other subsystem, irrespective of the relative distance of the two subsystems. We consider several arguments which were put forward in recent years in order to show that these nonlocal effects cannot be used for superluminal communication. It turns out that the arguments mentioned above are merely plausible but not really stringent and convincing. This means that the question in the title of this paper is still open.

Annalen der Physik•Dec 1, 1998•15 citations

Begging the Signalling Question: Quantum Signalling and the Dynamics of Multiparticle Systems

Kent A. Peacock, Brian Hepburn

Many authors state that quantum nonlocality could not involve any controllable superluminal transmission of momentum-energy, signals, or information. We claim that most or all no-signalling proofs to date are question-begging, in that they depend upon assumptions about the locality of the measurement process that needed to be established in the first place. We analyse no-signalling arguments by Bohm and Hiley, and Shimony, which illustrate the problem in an especially striking way.

arXiv:quant-ph/9906036•Jun 11, 1999•8 citations

Can EPR‐correlations be used for the transmission of superluminal signals?

Peter Mittelstaedt

Abstract In a compound quantum system with EPR–like correlations a measurement of one subsystem induces instantaneously changes of the other subsystem, irrespective of the relative distance of the two subsystems. We consider several arguments which were put forward in recent years in order to show that these nonlocal effects cannot be used for superluminal communication. It turns out that the arguments mentioned above are merely plausible but not really stringent and convincing. This means that the question in the title of this paper is still open.

Annalen der Physik•Dec 1, 1998•3 citations
The question of (superluminal) signaling by means of quantum correlations is reconsidered and previous arguments are generalized and completed to yielding conclusive answers to the negative. Statistical analysis of the amplified input on the receiver's side shows that the state discrimination needed for defining a signal is in conflict with the linearity of quantum dynamics. Connections with fundamental issues of quantum mechanics are pointed out.
Since Bell's theorem, it is known that quantum correlations cannot be described by local variables (LV) alone: if one does not want to abandon classical mechanisms for correlations, a superluminal form of communication among the particles must be postulated. A natural question is whether such a postulate would imply the possibility of superluminal signaling. Here we show that the assumption of finite-speed superluminal communication indeed leads to signaling when no LV are present, and more generally when only LV derivable from quantum statistics are allowed. When the most general LV are allowed, we prove in a specific case that the model can be made again consistent with relativity, but the question remains open in general.
The possible connection between EPR correlations and superluminal interactions, as suggested by Bell and Bohm, is discussed using simple and palpable arguments: (a) It is shown how an experiment based on time-like events can allow us to answer the question "Can a measurement performed on one of the photons of an entangled pair change the state of the other?" (b) The theorem on superluminal finite-speed causal influences and superluminal signaling, introduced by Scarani and Gisin, is reexamined. (c) It is shown how faster-than-light interactions and Lorentz transformations might peacefully coexist.
In a compound quantum system with EPR–like correlations a measurement of one subsystem induces instantaneously changes of the other subsystem, irrespective of the relative distance of the two subsystems. We consider several arguments which were put forward in recent years in order to show that these nonlocal effects cannot be used for superluminal communication. It turns out that the arguments mentioned above are merely plausible but not really stringent and convincing. This means that the question in the title of this paper is still open.
Abstract In a compound quantum system with EPR–like correlations a measurement of one subsystem induces instantaneously changes of the other subsystem, irrespective of the relative distance of the two subsystems. We consider several arguments which were put forward in recent years in order to show that these nonlocal effects cannot be used for superluminal communication. It turns out that the arguments mentioned above are merely plausible but not really stringent and convincing. This means that the question in the title of this paper is still open.