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

The speed of quantum information and the preferred frame: analysis of experimental data

Valerio Scarani, Wolfgang Tittel, Hugo Zbinden, Nicolas Gisin

Published Jan 1, 2000• 71 citations
OpenAlex

Abstract

The results of EPR experiments performed in Geneva are analyzed in the frame of the cosmic microwave background radiation, generally considered as a good candidate for playing the role of preferred frame. We set a lower bound for the speed of quantum information in this frame at 1.5 x 10^4 c

Related papers

The speed of quantum information and the preferred frame: analysis of experimental data

Valerio Scarani, Wolfgang Tittel, Hugo Zbinden +1 more

arXiv:quant-ph/0007008•Physics Letters A•Oct 1, 2000•54 citations

In search of superluminal quantum communications: recent experiments and possible improvements

B Cocciaro, S Faetti, L Fronzoni

As shown in the famous EPR paper (Einstein, Podolsky e Rosen, 1935), Quantum Mechanics is non-local. The Bell theorem and the experiments by Aspect and many others, ruled out the possibility of explaining quantum correlations between entangled particles using local hidden variables models (except for implausible combinations of loopholes). Some authors (Bell, Eberhard, Bohm and Hiley) suggested that quantum correlations could be due to superluminal communications (tachyons) that propagate isotropically with velocity v t > c in a preferred reference frame. For finite values of v t , Quantum Mechanics and superluminal models lead to different predictions. Some years ago a Geneva group and our group did experiments on entangled photons to evidence possible discrepancies between experimental results and quantum predictions. Since no discrepancy was found, these experiments established only lower bounds for the possible tachyon velocities v t . Here we propose an improved experiment that should lead us to explore a much larger range of possible tachyon velocities V t for any possible direction of velocity of the tachyons preferred frame.

arXiv:1304.2282•Journal of Physics Conference Series•Jun 10, 2013•5 citations

Some Advantages of a Local Realist, 3D Wave Soliton Approach to EPR

Andrew Laidlaw

Not only are the foundation theories mutually compatible, they are also compatible with local realism once this concept is properly formulated (without presuming atomism in addition to locality). Relativity Theory is reconstructed in the context of a preferred frame, but so as to secure the Relativity Principle in every experiment except the measurement of the preferred frame, defined by a null result for the dipole component of the Microwave Background Radiation (MBR). The 3D soliton approach to physical modelling is found to be consistent with both Special Relativity and Quantum Mechanical Nonlocality, exemplified by the EPR paradox.

arXiv:quant-ph/0110160•Oct 27, 2001•0 citations

Tachyons and EPR correlations

Bruno Cocciaro

No causal paradoxes will occur if a preferred reference frame for tachyons propagation is assumed, and results of Bell's inequality experiments may be well explained without using any telepathyc effect. We can read G. Faraci's and others' results, Lettere al Nuovo Cimento, 15, 607-611 (1974), as a first quantitive indication on the tachyons preferred reference frame velocity with respect to the Earth, as well as on the tachyons velocity in their preferred reference frame. In order to experimentally prove this assumption's validity, Aspect-like experiments should be slightly modified.

arXiv:quant-ph/0512202•Dec 22, 2005•2 citations

Quantum preferred frame: Does it really exist?

Jakub Rembieliński, Kordian A. Smoliński

The idea of the preferred frame as a remedy for difficulties of the relativistic quantum mechanics in description of the non-local quantum phenomena was undertaken by physicists such as J. S. Bell and D. Bohm. The possibility of the existence of a preferred frame was also seriously treated by P. A. M. Dirac. In this paper, we propose an Einstein-Podolsky-Rosen–type experiment for testing the possible existence of quantum preferred frame. Our analysis suggests that to verify whether a preferred frame of reference in the quantum world exists, it is enough to perform an EPR-type experiment with a pair of observers staying in the same inertial frame and with use of the massive EPR pair of spin–one-half or spin-one particles.

arXiv:0910.5324•Europhysics Letters (EPL)•Oct 1, 2009•19 citations

A lower bound for the velocity of quantum communications in the preferred frame

Bruno Cocciaro, S. Faetti, Leone Fronzoni

arXiv:1006.2697•Physics Letters A•Nov 4, 2010•30 citations
As shown in the famous EPR paper (Einstein, Podolsky e Rosen, 1935), Quantum Mechanics is non-local. The Bell theorem and the experiments by Aspect and many others, ruled out the possibility of explaining quantum correlations between entangled particles using local hidden variables models (except for implausible combinations of loopholes). Some authors (Bell, Eberhard, Bohm and Hiley) suggested that quantum correlations could be due to superluminal communications (tachyons) that propagate isotropically with velocity v t > c in a preferred reference frame. For finite values of v t , Quantum Mechanics and superluminal models lead to different predictions. Some years ago a Geneva group and our group did experiments on entangled photons to evidence possible discrepancies between experimental results and quantum predictions. Since no discrepancy was found, these experiments established only lower bounds for the possible tachyon velocities v t . Here we propose an improved experiment that should lead us to explore a much larger range of possible tachyon velocities V t for any possible direction of velocity of the tachyons preferred frame.
Not only are the foundation theories mutually compatible, they are also compatible with local realism once this concept is properly formulated (without presuming atomism in addition to locality). Relativity Theory is reconstructed in the context of a preferred frame, but so as to secure the Relativity Principle in every experiment except the measurement of the preferred frame, defined by a null result for the dipole component of the Microwave Background Radiation (MBR). The 3D soliton approach to physical modelling is found to be consistent with both Special Relativity and Quantum Mechanical Nonlocality, exemplified by the EPR paradox.
No causal paradoxes will occur if a preferred reference frame for tachyons propagation is assumed, and results of Bell's inequality experiments may be well explained without using any telepathyc effect. We can read G. Faraci's and others' results, Lettere al Nuovo Cimento, 15, 607-611 (1974), as a first quantitive indication on the tachyons preferred reference frame velocity with respect to the Earth, as well as on the tachyons velocity in their preferred reference frame. In order to experimentally prove this assumption's validity, Aspect-like experiments should be slightly modified.
The idea of the preferred frame as a remedy for difficulties of the relativistic quantum mechanics in description of the non-local quantum phenomena was undertaken by physicists such as J. S. Bell and D. Bohm. The possibility of the existence of a preferred frame was also seriously treated by P. A. M. Dirac. In this paper, we propose an Einstein-Podolsky-Rosen–type experiment for testing the possible existence of quantum preferred frame. Our analysis suggests that to verify whether a preferred frame of reference in the quantum world exists, it is enough to perform an EPR-type experiment with a pair of observers staying in the same inertial frame and with use of the massive EPR pair of spin–one-half or spin-one particles.