Via #OPG_OpticaQ: Tunable quantum interference in free space with a liquid-crystal metagrating https://bit.ly/4hETXOe #QuantumInformation #OpticalElements 💡⚛️
@opg.optica.org
@opg.optica.orgVia #OPG_OpticaQ: Tunable quantum interference in free space with a liquid-crystal metagrating https://bit.ly/4hETXOe #QuantumInformation #OpticalElements 💡⚛️
@informaq.bsky.socialProving a quadratic area law for thermal quantum mutual information, improving understanding of high-temperature correlations in lattice systems and resolving thermodynamic inconsistencies.
@informaq.bsky.socialQuantum-information observables of top-quark pair spins enhance sensitivity to invisible dark matter mediators at the LHC, with spin-correlation measurements outperforming conventional rate and kinematic analyses by leveraging angular correlations.
@informaq.bsky.socialResearchers prove the Holevo bound's feasible region equals the intersection of β-logarithmic derivative quantum Fisher information matrix constraints, unifying single- and multiparameter quantum estimation limits.
@informaq.bsky.socialDerives explicit series formulas for quantum, classical, and entanglement-assisted capacities of the amplitude damping channel, eliminating residual optimizations and providing analytical benchmarks for dissipative quantum communication.
@informaq.bsky.socialFormulates Wilsonian renormalization group as quantum channels, establishing resource-theoretic monotones that unify UV-IR information loss across quantum systems without requiring momentum-space factorization.
@informaq.bsky.socialExact analytical and numerical results for tri-partite Rényi multi-entropy of fully symmetric Gaussian states reveal an asymptotic formula for infinite squeezing and establish a multi-entropy curve exhibiting black hole evaporation-like dynamics.
@informaq.bsky.socialProves optimal error exponents for quantum channel discrimination equal regularized Umegaki relative entropy, with trace-preserving approximations and applications to quantum resource theories.
@informaq.bsky.socialEstablishes exact data-processing region for quantum conditional Rényi entropies, proving conjectured sharpness of parameter constraints and proving rigidity of entropic duality relations through novel transfer principles and test-state methods.
@informaq.bsky.socialShows redundant quantum information establishes classical objectivity via indirect apparatus interactions; apparatus noise introduces shared errors while environmental noise allows recovery through larger fragments.
@informaq.bsky.socialProves that quantum systems with dimension ≥3 cannot have totally ordered resource theories where every state pair is convertible, while classical systems can be perfectly ordered—establishing a fundamental quantum-classical divide.
@quantumunivie.bsky.social⚛️🔬 Five days, countless ideas & one shared focus: the future of quantum information science!
A look back at #BeyondC Conference 2026 – from talks & poster sessions to discussions, new connections and a public talk by Nobel Laureate John Martinis. ✨
@informaq.bsky.socialResearchers at University of Illinois achieved quantum information storage on microchips exceeding one microsecond duration, overcoming a critical bottleneck where photons must be temporarily paused while slower quantum operations complete.
@informaq.bsky.socialMathematical framework connecting history-dependent decoherence to ultrametric geometry on infinite quantum record sequences, with direct operational interpretation via optimal record discrimination and superselection sector separation.
@informaq.bsky.socialNew protocols for efficient tomography of bosonic quantum states achieve optimal Gaussian approximations in both high and low fidelity regimes, with the first tolerant Gaussianity testing method and proof that non-Gaussian measurements are necessary.
@informaq.bsky.socialNew mathematical bounds connect quantum state stabilizer properties to resource requirements for computation. Resolves key conjecture and provides improved algorithms for quantum state tomography with square-root improvement in complexity.
@informaq.bsky.socialResearchers prove every Clifford hierarchy gate on a single qudit is semi-Clifford if and only if the dimension is square-free, revealing distinct gate classifications in composite dimensions that enable resource-efficient quantum operations.
@informaq.bsky.socialStudy reveals maximal distance measures fundamentally alter quantum information processing: some tasks like channel coding remain unchanged, while others require Belavkin-Staszewski entropy, breaking known reversibility theorems.
@informaq.bsky.socialEstablishes matching finite-blocklength bounds and derives capacity min{ϵ,1−ϵ} for quantum-state oblivious transfer over quantum erasure channels with rigorous information-theoretic security proofs in both honest and adversarial settings.
@informaq.bsky.socialWe derive exact analytical boundaries for bound entanglement in bipartite qutrits using positive maps, characterizing geometric regions that extend the Horodecki family with novel structural methods.