A factorization framework and two-qubit description allow photon pairs at lepton colliders to be treated as qubits for measuring Bell inequality violation, quantum discord, and nonstabilizerness using Belle data.
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Optimizing entanglement and Bell inequality violation in top antitop events,
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A shadow tomography framework is developed to characterize spin-spin entanglement in collider experiments, demonstrated via application to top quark pair production at the LHC.
An automated framework in MadGraph5_aMC@NLO computes tree-level production spin-density matrices and quantum observables for generic collider processes, with validation on ttbar and VV and new applications to multi-top final states.
Computes entanglement negativities for the tripartite spin system in e+e- -> ttZ and projects that collective entanglement is accessible but genuine multipartite entanglement has limited sensitivity at a polarized ILC with expected luminosity.
Quantum information observables in LHC top quark pair production are modified by SMEFT dimension-6 operators in ways that depend on their CP properties, offering a complementary probe beyond standard observables.
Energetic radiation induces decoherence that significantly reduces entanglement in fermion pairs at colliders, with statistically significant signals observable in ttbar(g) at the LHC and tau pairs at Belle II.
Semi-leptonic h to VV* decays retain an effective two-qutrit description for quantum tomography and entanglement after including finite fermion masses and NLO corrections.
Transverse polarization in e+e- collisions generates maximally entangled fermion pairs in QED processes and boosts entanglement in electroweak and Bhabha scattering.
Simulations of pp to tau+ tau- at the LHC with ML neutrino reconstruction show Bell nonlocality above 5 sigma, proposing tau pairs as a new benchmark system for quantum information studies.
Correspondence shown between Rényi mutual information variation across EWSB and stabilizer Rényi entropy in tree-level 2→2 scatterings, both depending identically on sin²θ_W after angular averaging due to Yukawa insertion as -iY gate, with entropy minimization yielding value for axial Z couplings.
Under mild assumptions, local hidden variable theories become testable at colliders and can be disproved via Bell-like inequalities for muon and tau pairs.
Quantum mutual information and coherence in top-quark pairs produced via QCD depend on kinematic variables, and the maximum value of an intrinsic relation increases with the gluon fraction in mixed initial states.
citing papers explorer
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Quantum Information of Photon Pairs at Lepton Colliders
A factorization framework and two-qubit description allow photon pairs at lepton colliders to be treated as qubits for measuring Bell inequality violation, quantum discord, and nonstabilizerness using Belle data.
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Optimised Inference of Quantum Phenomena in High-Energy Collider Experiments
A shadow tomography framework is developed to characterize spin-spin entanglement in collider experiments, demonstrated via application to top quark pair production at the LHC.
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Automated computation of spin-density matrices and quantum observables for collider physics
An automated framework in MadGraph5_aMC@NLO computes tree-level production spin-density matrices and quantum observables for generic collider processes, with validation on ttbar and VV and new applications to multi-top final states.
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Tripartite Entanglement in $e^+ e^- \to t \bar{t} Z$
Computes entanglement negativities for the tripartite spin system in e+e- -> ttZ and projects that collective entanglement is accessible but genuine multipartite entanglement has limited sensitivity at a polarized ILC with expected luminosity.
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Quantumness of top quark pairs produced at LHC within SMEFT framework
Quantum information observables in LHC top quark pair production are modified by SMEFT dimension-6 operators in ways that depend on their CP properties, offering a complementary probe beyond standard observables.
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Radiation effects on the entanglement of fermion pairs at colliders
Energetic radiation induces decoherence that significantly reduces entanglement in fermion pairs at colliders, with statistically significant signals observable in ttbar(g) at the LHC and tau pairs at Belle II.
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Quantum Tomography and Entanglement in Semi-Leptonic $h\to VV^*$ Decays at Higher Orders
Semi-leptonic h to VV* decays retain an effective two-qutrit description for quantum tomography and entanglement after including finite fermion masses and NLO corrections.
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Spin Correlation and Quantum Entanglement of Fermion Pairs in Transversely Polarized $e^-e^+$ Collisions
Transverse polarization in e+e- collisions generates maximally entangled fermion pairs in QED processes and boosts entanglement in electroweak and Bhabha scattering.
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Entanglement and Bell Nonlocality in $\tau^+ \tau^-$ at the LHC using Machine Learning for Neutrino Reconstruction
Simulations of pp to tau+ tau- at the LHC with ML neutrino reconstruction show Bell nonlocality above 5 sigma, proposing tau pairs as a new benchmark system for quantum information studies.
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Symmetry Breaking as Quantum Gate: Entropy and Weak Mixing Angle
Correspondence shown between Rényi mutual information variation across EWSB and stabilizer Rényi entropy in tree-level 2→2 scatterings, both depending identically on sin²θ_W after angular averaging due to Yukawa insertion as -iY gate, with entropy minimization yielding value for axial Z couplings.
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Understanding Bell locality tests at colliders
Under mild assumptions, local hidden variable theories become testable at colliders and can be disproved via Bell-like inequalities for muon and tau pairs.
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Quantum mutual information, coherence and unified relations of top quarks in QCD processes
Quantum mutual information and coherence in top-quark pairs produced via QCD depend on kinematic variables, and the maximum value of an intrinsic relation increases with the gluon fraction in mixed initial states.