Science – Page 5 – Investment Policy

Squeezing Neural Networks: A New Approach to Memory-Efficient Inference

19.12.2025 by Ray Dalio

SHARe-KAN, employing Int8 quantization, demonstrates resilience against decay by achieving accuracy competitive with its denser counterpart-despite a seventeenfold reduction in model size-and nearing the performance of ResNet-50 MLP within a compact 12.91 MB footprint, suggesting efficient information retention even under significant compression.

Researchers have developed a compression technique that dramatically reduces the memory footprint of complex neural networks, paving the way for deployment on edge devices.

Beyond Classical Limits: Probing Quantum Contextuality with Game Theory

19.12.2025 by Ray Dalio

$The study demonstrates that witnessing quantum contextuality in cluster states with 50 to 100 qubits is likely achievable on current quantum hardware, as indicated by a substantial gap between the rigorous lower bound on required fidelity-$ \mathcal{F}>\mathcal{F}\_{c}=2p\_{\mathrm{cl}}^{\*}-1$ -and the fidelity of $ \mathcal{F}=\epsilon^{n},\,\epsilon=0.98$ attainable with state-of-the-art devices, while also confirming the tightness of the lower bound through numerical verification for smaller systems ($n\leq 16$).$

New research leverages the mathematical framework of nonlocal games and coding theory to design scalable tests for verifying the fundamentally quantum phenomenon of contextuality.

Beyond Entanglement: Harnessing Topology for Quantum Advantage

19.12.2025 by Ray Dalio

$The system explores a transition between symmetry-protected topological and trivial phases-tuned by a transverse field $h$ at a critical point $h_c$-and demonstrates a nonzero topological magic response $M^{q}_{topo}$ in the topological phase that vanishes as system size $L$ increases, achieved through the application of $N$ T-gates to a ground state $|\psi\rangle$ and a T-gate-doped state $|\psi_T\rangle$, as analyzed by partitioning the spin-chain into segments A, B, C, and D.$

New research reveals that symmetry-protected topological phases can intrinsically generate a unique form of quantum resource-the ‘topological magic response’-potentially enhancing capabilities in quantum computation and information processing.

Rydberg Ions Unlock Scalable Quantum Control

19.12.2025 by Ray Dalio

This quantum error correction circuit implements a nine-qubit Bacon-Shor code using Rydberg-ion gates, achieving a 25% reduction in physical CNOT gates through optimized fault-tolerant SWAP gate placement and a measurement-free design, while maintaining overall circuit-level fault tolerance via coherent ZZ-correction and ancillary qubit manipulation.

Researchers demonstrate a fast, native three-qubit gate and a promising error correction strategy using trapped Rydberg ions, bringing fault-tolerant quantum computation closer to reality.

Simulating the Quantum Internet: A Unified Toolkit Takes Shape

19.12.2025 by Ray Dalio

QuantumSavory distinguishes itself from existing quantum simulation tools-including NetSquid, SimulaQron, SeQUeNCe, Squanch, QuISP, and QuNetSim-by prioritizing novel features essential for scalable, full-stack codesign, rather than simply replicating established capabilities.

Researchers unveil QuantumSavory, a new simulation framework designed to model the complex interplay of quantum computers and networks.

Quantum Networks: When More Entanglement Means Less

19.12.2025 by Ray Dalio

$In a quantum network comprising eight nodes ($N=8$), noncooperative behavior emerges as user pairs navigate entanglement pathways-whether at Nash equilibria or globally optimal configurations-with fidelity exceeding 95% ($F_0 = 0.95$) and utilizing 1000 iterations ($M=1000$) to establish connections, even when edges are removed, demonstrating that network performance isn’t dictated by central control but arises from the interplay of local connections and user choices, as evidenced by a balanced mix of Bell and Werner states ($\nu_{AB}=3$).$

New research reveals that simply adding more quantum entanglement doesn’t guarantee better communication, and strategic resource reduction can surprisingly improve network performance.

Squeezing More Out of Quantum Codes

19.12.2025 by Ray Dalio

A new technique unifies methods for optimizing quantum error-correcting codes, offering greater control over their parameters and performance.

Closing the Distance: A New Path for Secure Quantum Communication

19.12.2025 by Ray Dalio

$The relationship between $SKR\infty/DW$ and the parameters $\gamma\gamma$ and $\delta\delta$ demonstrates a clear dependency on the values of $q$ and $\sigma_{X}^{2}$, as established in Table 2, under the conditions $T=10^{-6}$ and $\xi=10^{-5}$.$

Researchers have developed an advanced information reconciliation technique to significantly improve the feasibility of long-range continuous-variable quantum key distribution.

Quantum Walks Take Root on Complex Networks

19.12.2025 by Ray Dalio

The study defines a coined quantum walk operating on complex networks, where the walk progresses to neighboring nodes-specifically, node $j$ is designated as a neighbor of node $i$-thereby establishing the foundational mechanics of quantum information transfer within interconnected systems.

Researchers detail a scalable method for implementing coined quantum walks on complex networks, bringing this powerful algorithm closer to realization on near-term quantum hardware.

Testing the Quantum Frontier: A Platform for Realistic QKD Networks

19.12.2025 by Ray Dalio

The instantiation of an emulated Quantum Key Distribution Network (QKDN) leverages the Quditto framework, establishing a pathway for realizing provably secure communication protocols based on the principles of quantum mechanics and ensuring information transfer with $O(n)$ complexity.

Researchers have developed a new emulation platform, Quditto, to rigorously test and validate the deployment of complex Quantum Key Distribution systems.