Exactly two of the seven GPT families with CHSH value stable under teleportation are quantum-realizable: χ^{K_4}_{1234} and χ^{D_4}_{125}.
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A proof-of-principle experiment demonstrates the first discrete-variable one-sided device-independent QKD protocol achieving a secure key rate of 1 kbps over an equivalent 20 km fiber distance.
Introduces Bargmann scenarios and polytopes to fully characterize and organize the witnessing power of Bargmann invariants for coherence in sets of states.
Separable measurements augmented with classical feedforward suffice to certify full network nonlocality and minimal network nonclassicality while enabling device-independent randomness quantification.
Linear-optical experiment with sequential measurements on single photons violates the KCBS inequality to demonstrate quantum contextuality and robustness to photon loss.
Experimental observation of high-dimensional Bell nonlocality between two d=64 systems encoded in 12 qubits, with violations exceeding d=2 bounds and evidence that the nonlocality is genuinely collective across all qubits.
For nonlocal hidden variable ontologies to allow independent choices by several agents, the measurement context must incorporate time-ordering of the agents' decisions.
The paper derives necessary and sufficient conditions for emergent quantum dynamics as a Bayesian inference problem, validates them via semidefinite programming in paradigmatic cases, and defines a new robustness measure against noise.
Optimal single-site operators for multipartite nonlocality in 1D spin chains exhibit mirror symmetry and remain robust across phases in Ising-type models.
Explicit sequential unsharp measurement model for DI-QKD attacks that preserves Bell violation and reproduces features of collective attacks in certain parameter regimes.
citing papers explorer
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Quantum Realizability of Probabilistic Theories Stable under Teleportation
Exactly two of the seven GPT families with CHSH value stable under teleportation are quantum-realizable: χ^{K_4}_{1234} and χ^{D_4}_{125}.
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Semi-transmitter-device-independent quantum key distribution
A proof-of-principle experiment demonstrates the first discrete-variable one-sided device-independent QKD protocol achieving a secure key rate of 1 kbps over an equivalent 20 km fiber distance.
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Bargmann Scenarios
Introduces Bargmann scenarios and polytopes to fully characterize and organize the witnessing power of Bargmann invariants for coherence in sets of states.
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Network Nonlocality with Separable Measurements
Separable measurements augmented with classical feedforward suffice to certify full network nonlocality and minimal network nonclassicality while enabling device-independent randomness quantification.
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Linear-optical test of quantum contextuality with sequential measurements
Linear-optical experiment with sequential measurements on single photons violates the KCBS inequality to demonstrate quantum contextuality and robustness to photon loss.
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Experimental high-dimensional multi-qubit Bell non-locality on a superconducting quantum processor
Experimental observation of high-dimensional Bell nonlocality between two d=64 systems encoded in 12 qubits, with violations exceeding d=2 bounds and evidence that the nonlocality is genuinely collective across all qubits.
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Kochen-Specker nonlocal hidden variables must include time-ordering to allow for measurement independence of several agents
For nonlocal hidden variable ontologies to allow independent choices by several agents, the measurement context must incorporate time-ordering of the agents' decisions.
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Emergent Quantum Dynamics as a Bayesian Inference Problem: A Critical Analysis
The paper derives necessary and sufficient conditions for emergent quantum dynamics as a Bayesian inference problem, validates them via semidefinite programming in paradigmatic cases, and defines a new robustness measure against noise.
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Intrinsic Mirror Symmetry and Robustness of Optimal Nonlocal Operators in One-Dimensional Quantum Spin Chains
Optimal single-site operators for multipartite nonlocality in 1D spin chains exhibit mirror symmetry and remain robust across phases in Ising-type models.
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Security of Device-independent Quantum Key Distribution under Sequential Attack
Explicit sequential unsharp measurement model for DI-QKD attacks that preserves Bell violation and reproduces features of collective attacks in certain parameter regimes.