Skip to content

Investment Policy

Science

Hypercube Codes Take a Step Closer to Fault-Tolerant Quantum Computing

02.12.2025 by Ray Dalio

Decoding performance of Minimum Hamming Codes (MHC) diminishes with increasing error levels, as demonstrated by the rising error probabilities at levels 2 through 4 when subjected to bit-flip errors.

New research identifies an optimized hypercube code demonstrating significantly improved error rates and reduced qubit overhead, paving the way for more practical quantum computation.

Categories Science

Quantum Encryption Beyond Bits: A Deep Dive into Continuous Variables

02.12.2025 by Ray Dalio

A coherent state continuous-variable quantum key distribution protocol leverages a shared twin-beam state and heterodyne detection, wherein an eavesdropper’s interaction with the transmitted quantum mode is modeled as a beam-splitter mixing with another twin-beam state, ultimately influencing the outcome of Bob’s homodyne or heterodyne measurement and impacting key generation.

This review explores the principles and practicalities of continuous-variable quantum key distribution, a powerful alternative to traditional discrete-variable approaches for secure communication.

Categories Science

Shielding Crypto from Attack: Hardware Defenses for a Post-Quantum World

02.12.2025 by Ray Dalio

A 65nm CMOS integrated circuit-verified in silicon-implements a digital signature attenuation technique alongside on-chip electromagnetic side-channel analysis and fault injection attack detection, demonstrating a sustainable and intelligent approach to security hardening.

New circuit-level countermeasures and proactive detection techniques bolster cryptographic systems against power and electromagnetic side-channel attacks, with a silicon-verified implementation of the Saber algorithm demonstrating significant energy gains.

Categories Science

Scrambled Secrets: A New Link Between Quantum Chaos and Cryptography

02.12.2025 by Ray Dalio

Haar scrambling approximates a quantum ramp secret sharing scheme-specifically, a $((3,9))$ scheme exhibiting a gap of $G=6$ and rampiness of $R=0.5$-as demonstrated by the mutual information between a reference qubit and arbitrary qubits within a 12-qubit system.

New research reveals a surprising connection between the seemingly disparate fields of quantum scrambling and quantum secret sharing, opening doors for novel cryptographic protocols.

Categories Science

Entangling the Future: Scaling Quantum Error Correction with Rydberg Gates

02.12.2025 by Ray Dalio

The study demonstrates a method for realizing complex multiqubit gates-beyond those achievable with symmetric interactions-by illuminating three atoms arranged in a non-symmetric geometry with a global Rydberg laser, enabling the creation of controlled interactions defined by phase-shifting gates such as $C_{n}Z(\alpha)$ and $Z(\alpha)$ and circumventing the limitations of exchange symmetry in qubit manipulation.

A new analysis details how optimized multiqubit Rydberg gates can bolster the performance of quantum error correction schemes, paving the way for more robust quantum computers.

Categories Science

Future-Proofing AI Audits Against Quantum Threats

02.12.2025 by Ray Dalio

As artificial intelligence systems become increasingly regulated, ensuring the long-term security and integrity of their audit trails is paramount.

Categories Science

Beyond Calibration: Building Reliable Quantum Circuits with Imperfect Gates

02.12.2025 by Ray Dalio

The study demonstrates that augmenting standard quantum Fourier transform circuits with efficient gates substantially improves the probability of obtaining the target bitstring - particularly for larger 24-qubit systems where the correct result emerges as the most likely outcome above inherent noise, a result evidenced by comparing likelihoods across varying circuit widths and the frequency of observed bitstrings.

A new approach to quantum circuit design bypasses traditional calibration routines, enabling high-fidelity execution even with noisy, real-world quantum gates.

Categories Science

Rewriting Quantum Error Correction: A New Link Between Surface Code Methods

02.12.2025 by Ray Dalio

The implementation of a CNOT gate demonstrates a surprising equivalence between seemingly distinct approaches-braided surface codes utilizing dual loops to mediate interactions between logical qubits, and lattice surgery-highlighting that visual similarities can mask fundamental connections in quantum computation, even when employing different correlation surfaces represented by color distinctions.

Researchers have developed a unified framework for converting between different representations of surface code quantum computations, paving the way for more efficient and verifiable designs.

Categories Science

Quantum Collaboration in a Diverse World

02.12.2025 by Ray Dalio

A distributed quantum framework, termed SPQFL, enables collaborative training of a shared quantum machine learning model by leveraging a network of quantum devices in conjunction with a central quantum server.

As quantum machine learning advances, effectively pooling resources across varied quantum devices and datasets becomes a critical hurdle.

Categories Science

Decoding the Quantum Link: From Error Correction to Algorithm Design

02.12.2025 by Ray Dalio

The ratio of satisfied constraints decreases as the code rate increases, given a constraint density of one-half.

New research establishes a surprising connection between quantum decoding algorithms and a challenging problem in coding theory, potentially unlocking new approaches to both fields.

Categories Science
Older posts
Newer posts
← Previous Page1 … Page24 Page25 Page26 … Page44 Next →
© 2025 Investment Policy • Built with GeneratePress