Quantum Computing

Why haven't quantum computers factored 21 yet? (algassert​.com). Why factoring 21 is vastly harder than 15: cost from conditional modular multiplications, 1-bits, CSWAPs, Toffolis, and error-correction overhead

ML-KEM and ML-DSA Post-Quantum Cryptography in Windows (strathweb​.com). Windows CNG PQC support with ML-KEM, ML-DSA native APIs; .NET 10 previews; comparison to BouncyCastle; key exchange, signing, and key encapsulation

How quantum computing would effect Bitcoin (johndcook​.com). Quantum threats to Bitcoin: public-key cryptography, hash functions, Shor’s algorithm, and post-quantum signatures like Dilithium and SPHINCS+

El Salvador’s Bitcoin and Quantum Computing (johndcook​.com). El Salvador splits 6,000 BTC into 14 wallets to mitigate quantum attack risk and enable phased spending, with blockchain verification and protocol hardening discussions

quantisation basics (aarnphm​.xyz). Quantization, uniform/non-uniform, MSQE; kv cache pruning; KV quantization (KVQuant, SKVQ, KIVI, AdaKV, PyramidKV); multi-head attention, per-token KV; RoPE conflicts; DeepSeek KV compression; two-batch overlap (TBO); RMDA/NIXL; KV-aware routing; prefill/decode timing;

2025-09-01: Let's write a peephole optimizer for QBE's arm64 backend (briancallahan​.net). Peephole optimizer for QBE ARM64 backend; eliminates register copies, merges immediates into arithmetic, three-line window optimization, add-to-mov transform, 4-byte AArch64 instructions, OpenBSD httpd mention

IBM and AMD Join Forces to Build the Future of Computing (newsroom​.ibm​.com). IBM and AMD pursue quantum-centric supercomputing combining IBM quantum systems with AMD HPC, CPUs, GPUs, and FPGAs; open-source Qiskit integration; fault-tolerant quantum goals; hybrid quantum-classical workflows

Burrito Monads, Arrow Kitchens, and Freyd Category Recipes (golem​.ph​.utexas​.edu). Burrito Monads, Arrow Kitchens, Freyd Categories; monads, Maybe, Reader; Arrows; Freyd categories; Atkey; closed indexed Freyd categories; quantum computing

A low-cost protocol enables preparation of magic states and fault-tolerant universal quantum computation (phys​.org). Unfolded distillation enables low-cost magic-state prep for biased-noise qubits in 2D layouts, aiding fault-tolerant quantum computation

Amazon Braket introduces local device emulator for verbatim circuits (aws​.amazon​.com). Amazon Braket local device emulator tests verbatim circuits with device-specific noise before hardware runs

EECS researchers develop a scalable quantum platform for high-speed communications (eecs​.berkeley​.edu). Chip-based quantum platform uses silicon photonics to multiplex T centers in cavity arrays for parallel on-chip light sources via a single optical bus

Turning Back the Quantum Clock: How Physicists Made Time Reversal Practical (everymansci​.com). Universal quantum rewinding protocol in qubits with Q gate (quantum SWITCH), interference of path superpositions, two-level systems, probabilistic reversal, IQOQI Vienna, Navascués, Dive, Trillo, connection to time translation protocols

Harvest Imaging 2025 Forum - Dec 8, 9 - Single-Photon Detection (image-sensors-world​.blogspot​.com). Harvest Imaging 2025 forum focuses on single-photon detection with Prof. Robert Henderson; SPAD arrays, dToF, photon counting, 3D-stacking, low-light imaging, LIDAR, fluorescence, Raman, quantum optics

Did they just break quantum physics? (backreaction​.blogspot​.com). Sabine Hossenfelder discusses potential quantum-physics breakdown claims, video analysis, quantum foundations, and public reaction

Novel approach suppresses magnetic noise for the fast optical control of a coherent hole spin in a microcavity (phys​.org). Laser pulses plus nuclear spin cooling suppress magnetic noise, enabling fast optical control of a hole spin in a quantum dot within a microcavity

Architecting Distributed Quantum Computers: Design Insights from Resource Estimation (arxiv:cs). Addresses fundamental scaling challenges in quantum computing by analyzing distributed architectures that can scale beyond current monolithic systems. Essential reading for understanding future large-scale quantum computer design and resource requirements

Spectral Gaps with Quantum Counting Queries and Oblivious State Preparation (arxiv:cs). Presents quantum algorithms for approximating spectral gaps with logarithmic qubits, achieving speedups over classical methods. Important theoretical advancement for eigenvalue problems with applications across quantum computing and machine learning

$Δ$-Motif: Subgraph Isomorphism at Scale via Data-Centric (arxiv:cs). Introduces GPU-accelerated subgraph isomorphism algorithm with direct applications to quantum circuit optimization, achieving 595× speedups. Critical tool for scaling quantum circuit compilation and optimization on near-term devices

Fourier transform-based linear combination of Hamiltonian simulation (arxiv:math). Develops improved quantum algorithms for linear differential equations using Fourier transforms, reducing complexity by 1.81× and circuit depth by 8.27×. Fundamental advancement in quantum linear algebra with broad applications

Quantum latent distributions in deep generative models (arxiv:cs). Demonstrates quantum advantages in generative AI using quantum processors for latent distributions in deep learning models. Shows practical near-term applications where quantum computing can enhance classical machine learning

Quantum-inspired probability metrics define a complete, universal space for statistical learning (arxiv:stat). Introduces quantum-inspired probability metrics that overcome limitations of existing methods in high-dimensional spaces. Provides mathematical framework connecting quantum mechanics with statistical learning and optimization

Quantum Sequential Universal Hypothesis Testing (arxiv:stat). Develops sequential quantum hypothesis testing that adapts measurement strategies based on data, reducing sample complexity. Fundamental contribution to quantum statistics with applications in quantum sensing and parameter estimation

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