Jamming Extensions of Quantum Correlations Lead to Hidden Superluminal Signaling

• URL: http://arxiv.org/abs/2608.20247v1
• Date: Thu, 20 Aug 2026 16:42:59 GMT
• Title: Jamming Extensions of Quantum Correlations Lead to Hidden Superluminal Signaling
• Abstract summary: We characterize correlations compatible with relativistic causality (RC) by extending the operator framework of PRL 104, 140404.<n>As an application of our characterization, we investigate the security of cryptographic primitives against adversaries constrained only by relativistic causality.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Relativistic causality in certain spacetime configurations permits jamming - superluminal causal influences that nevertheless do not enable superluminal signaling. We fully characterize the correlations compatible with relativistic causality (RC) by extending the operator framework of PRL 104, 140404. When the underlying state is required to be quantum, we prove that any nontrivial jamming - whether state-independent or state-dependent - necessarily leads to hidden superluminal signaling. Thus, the only consistent possibilities are standard quantum correlations without jamming or the full relativistically causal correlation set, with intermediate jamming extensions of quantum correlations leading to signaling. As an application of our characterization, we investigate the security of device-independent (DI) cryptographic primitives against adversaries constrained only by relativistic causality. We construct explicit RC attacks that break DI bit commitment and DI secret sharing in jamming geometries, even when these protocols remain secure against no-signaling adversaries. Our results show that security against relativistic adversaries requires behaviors to be specified together with the spacetime locations of their measurement events; input-output statistics alone are insufficient.

Related papers

• Certifying coherence in quantum devices under classical control [33.72751145910978]
  We prove that coherence can be fully characterised through a hierarchy of semidefinite programs.<n>For the important special case of qubits, we exploit conceptual connections with the theory of joint measurability.<n>We apply these methods to determine whether quantum channels are able to preserve coherence or are inherently coherence-breaking.
  arXiv  Detail & Related papers  (2026-06-02T14:20:45Z)
• Trust, Geometry, and Rules: A Credibility-Aware Reinforcement Learning Framework for Safe USV Navigation under Uncertainty [32.34854002457735]
  We propose a framework integrating credibility-aware learning, geometric safety shielding, and continuous rule-aware embedding.<n>We show improved training robustness against perceptual inconsistency and superior collision avoidance and COLREGs compliance over baselines.
  arXiv  Detail & Related papers  (2026-05-26T12:59:43Z)
• Neural Uncertainty Principle: A Unified View of Adversarial Fragility and LLM Hallucination [60.197429875410286]
  Adversarial vulnerability in vision and hallucination in large language models are conventionally viewed as separate problems.<n>Formalizing a Neural Uncertainty Principle (NUP) under a loss-induced state, we find that in near-bound regimes, further compression must be accompanied by increased sensitivity dispersion.<n>In vision, masking highly coupled components improves robustness without costly adversarial training.<n>In language, the same prefill-stage probe detects hallucination risk before generating any answer tokens.
  arXiv  Detail & Related papers  (2026-03-20T02:07:10Z)
• The operational no-signalling constraints and their implications [0.0]
  We establish a unified framework in the form of operational no-signalling constraints to study nonlocal and temporal correlations.<n>We show that the violation of the operational no-signalling constraints in Minkowski spacetime implies either a logical paradox or an operational infringement of Poincaré symmetry.<n>In black hole spacetimes certain nonlocal correlations can be jammed by any agent without spoiling the operational no-signalling constraints.
  arXiv  Detail & Related papers  (2025-12-29T18:57:33Z)
• Quantum-Like Correlations from Local Hidden-Variable Theories Under Conservation Law [45.88028371034407]
  We show how to construct a local hidden-variable model that violates Bell inequalities.<n>The model also gives subtly different predictions to quantum mechanics, that could be tested experimentally.
  arXiv  Detail & Related papers  (2025-11-08T15:32:13Z)
• Photonic Simulation of Beyond-Quantum Nonlocal Correlations (e.g. Popescu-Rohrlich Box) with Non-Signaling Quantum Resources [4.969716969054012]
  Bell nonlocality exemplifies the most profound departure of quantum theory from classical realism.<n>We show how post-quantum correlations can be simulated using intrinsically non-signaling physical resources.<n>We also analyze how the simulation scheme extends to beyond quantum nonlocal correlations in multipartite systems.
  arXiv  Detail & Related papers  (2025-09-30T13:55:22Z)
• Decoherence and fidelity enhancement during shuttling of entangled spin qubits [45.05458154702236]
  We show that noises acting on the shuttled spins exhibit complex and unusual correlations.<n>These correlations can also be exploited to enhance the shuttling fidelity.<n>We show that by encoding logical qubit in a state of two consequtively shuttled entangled spins, high fidelity can be achieved even for very slow shuttling.
  arXiv  Detail & Related papers  (2025-06-24T14:37:39Z)
• Contraction of Private Quantum Channels and Private Quantum Hypothesis Testing [19.69490455003981]
  We study contraction coefficient for hockey-stick divergence under privacy constraints.<n>We also show how private quantum channels provide fairness and Holevo information stability in quantum learning settings.
  arXiv  Detail & Related papers  (2024-06-26T18:00:03Z)
• The standard no-signalling constraints in Bell scenarios are neither sufficient nor necessary for preventing superluminal signalling with general interventions [0.9208007322096533]
  Key to a causal theory is that superluminal signalling is forbidden, which holds in quantum theory.<n>In Bell scenarios, relativistic causality principles like no superluminal signalling are often assumed to follow from the standard no-signalling constraints on correlations.<n>We show that jamming theories can lead to superluminal signalling in certain situations, highlighting limitations for their physicality.
  arXiv  Detail & Related papers  (2023-11-30T11:17:49Z)
• Correcting for finite statistics effects in a quantum steering experiment [33.013102271622614]
  We introduce a one-sided device-independent protocol that corrects for apparent signaling effects in experimental probability distributions.<n>Our results show a significantly higher probability of violation than existing state-of-the-art inequalities.<n>This work demonstrates the power of semidefinite programming for entanglement verification and brings quantum networks closer to practical applications.
  arXiv  Detail & Related papers  (2023-05-23T14:39:08Z)
• Causality and signalling in non-compact detector-field interactions [0.0]
  "apparent" superluminal signalling and retrocausation can appear for particle detector models. We show that, even for detectors with infinite tails in space and time, if the tails decay exponentially, one can define an effective lightcone.
  arXiv  Detail & Related papers  (2023-05-12T20:46:38Z)
• Quantum Causal Inference with Extremely Light Touch [0.0]
  We give a causal inference scheme using quantum observations alone for a case with both temporal and spatial correlations.<n>The protocol determines compatibility with 5 causal structures distinguished by the direction of causal influence.
  arXiv  Detail & Related papers  (2023-03-19T02:59:05Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.