Superconductivity2026-07-053 minarXiv:2607.04097The Qubit Sings a Second Voice: Altermagnetic Protection Without MagnetsSuperconducting qubits are the beating heart of quantum computers, but their rhythm is disrupted by decoherence: quantumness dissolves into noise.Guo-Liang GuoFermi's golden ruletunnel effectDavid DeutschJohn PreskillAlain Aspectqubitquantum error correctionquantum computerQuantum superpositionsuperconductivity👍👎☆SimplePopularAdvanced