Awesome news everyone! Our preprint All-electrical dephasing-protected spin qubits in altermagnets just got on the arxiv!!

Time to explore a brand new material platform! Altermagnets are a recently discovered class of magnetic materials with zero net magnetization but momentum-dependent spin splitting. What happens if we define quantum dots in an altermagnetic semiconductor? It turns out the altermagnetic spin splitting produces a Zeeman-like qubit splitting whose magnitude and sign are set by the dot geometry, so we get spin qubits with no external magnetic fields, no micromagnets, and full electrical tunability of the qubit frequency. Even better, since the quantization axis is fixed by the material, electric noise couples mostly transversely, causing relaxation rather than dephasing, an intrinsic form of dephasing protection. The absence of stray fields also makes these qubits naturally compatible with superconducting resonators and circuit-QED readout. We show how to implement single-qubit control via EDSR, two-qubit fSim gates, and even fully electrical singlet-triplet qubits. A whole new playground awaits!