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The Morning AbstractFeb 15 – Mar 1, 2026 · Your biweekly research briefing
412 quantum computing papers hit arXiv in the last 2 weeks. 23 matched your interests. Here are the highlights.
Top Papers
1
Real-Time Decoding Pushes Logical Qubits Past 0.1% ThresholdChen et al. (MIT / Harvard)arXiv →
Custom FPGA decoder achieves 0.09% logical error per round on 48 physical qubits with 880 ns average decode latency.
• First real-time error correction loop fast enough for mid-circuit feedback — 10× faster than the qubit coherence window
• Collapses the fault-tolerance timeline by solving the real-time decoding bottleneck that blocked scaling for years
2
Trapped-Ion Gate Fidelity Hits 99.97%QuantinuumarXiv →
Quantinuum hits 99.97% two-qubit gate fidelity using barium-171 ions with Raman transitions and spin-echo refocusing.
• Measured via randomized benchmarking over 2,000 circuits — beats Oxford's 2023 record of 99.92%
• Clears the fidelity threshold required for most surface code implementations, strengthening trapped ions' lead in qubit quality
3
VQE Solves 40-Qubit FeMoco Problem Classical Methods Can't TouchGoogle DeepMind / QAIarXiv →
First VQE result on the FeMoco active site recovers 96.3% correlation energy on a 40-qubit, 120-Pauli-term system.
• Noise-aware parameter optimization tackles a molecular system beyond classical exact diagonalization capabilities
• Practical quantum chemistry is closer than skeptics claim — FeMoco is a key target for understanding nitrogen fixation
+20 more papers matched your interests
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