# Quantum Computing & Information

Fault-tolerant quantum computing, qubit hardware platforms, quantum algorithms, quantum networks, post-quantum cryptography and quantum sensing.

## Topics

- [Quantum Error Correction & Fault Tolerance](https://space-kitty.com/topics/quantum-error-correction) (279 papers): Surface codes and qLDPC codes, below-threshold logical qubits, real-time decoding, magic-state distillation and cultivation, and resource estimates for fault tolerance.
- [Superconducting Quantum Processors](https://space-kitty.com/topics/superconducting-qubits) (253 papers): Transmon, fluxonium and bosonic cat qubits; coherence, gate fidelity, leakage, cosmic-ray errors, packaging and scaling of superconducting processors.
- [Neutral-Atom & Trapped-Ion Quantum Computing](https://space-kitty.com/topics/atoms-and-ions) (242 papers): Rydberg atom arrays, reconfigurable logical processors, QCCD trapped-ion architectures, high-fidelity gates and mid-circuit measurement.
- [Photonic, Spin & Topological Qubits](https://space-kitty.com/topics/photonic-topological-qubits) (238 papers): Photonic fusion-based architectures and GKP states, silicon spin qubits, and Majorana-based topological qubits including the evidence debate.
- [Quantum Algorithms & Quantum Advantage](https://space-kitty.com/topics/quantum-algorithms-advantage) (182 papers): Factoring and chemistry resource estimates, quantum simulation algorithms, random-circuit sampling, verifiable advantage and the classical-simulation counterattack.
- [Quantum Networks & Post-Quantum Cryptography](https://space-kitty.com/topics/quantum-communication-crypto) (254 papers): Quantum key distribution, repeaters and entanglement distribution, and the migration to NIST post-quantum standards (ML-KEM, ML-DSA, SLH-DSA).
- [Quantum Sensing & Metrology](https://space-kitty.com/topics/quantum-sensing) (219 papers): NV-center magnetometry, optical lattice and nuclear clocks, squeezed light in gravitational-wave detectors and atom interferometry.

## Dossiers

- [Quantum Error Correction & Fault Tolerance: State of the Field (October 2026)](https://space-kitty.com/dossiers/quantum-error-correction) ($0.20): An expert briefing on quantum error correction as of late October 2026: surface, color and qLDPC codes, bosonic and erasure qubits, real-time decoding, magic-state preparation and fault-tolerant resource estimates. The main takeaway is that below-threshold error suppression has been shown on superconducting hardware, in a short neutral-atom surface-code circuit and, in a 2026 preprint, in trapped-ion color-code memories, so the bottleneck has shifted to logical gates, magic-state cost, decoding latency, correlated errors and scale. Published estimates for factoring RSA-2048 have fallen from 20 million noisy qubits (2019) to under one million (2025); 2026 preprints claim under 100,000 with qLDPC codes, and Shor's algorithm at cryptographically relevant scale on as few as 10,000 reconfigurable atoms, with runtime falling as qubits are added, all assuming hardware not yet demonstrated at scale.
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Space Kitty Archive · https://space-kitty.com · API: https://space-kitty.com/api/v1 · MCP: https://space-kitty.com/mcp · Premium: $0.20/request via x402 (Base Sepolia (testnet)). Metadata: arXiv (CC0), OpenAlex (CC0), Europe PMC (CC BY/CC0 works), ClinicalTrials.gov.