Theoretical analysis of decoherence mechanisms indicated that an electron spin qubit on a purified solid neon surface could achieve a coherence time as long as 81 seconds.
Significance and Impact
The theoretical results indicate that single-electron qubits on solid neon could be superior to most existing semiconductor spin qubits. Such qubits would be applicable to quantum computing and other quantum information systems
- The inhomogeneous dephasing time was estimated as 0.16 ms with natural Ne and 0.43 s with purified Ne, better than most semiconductor quantum-dot spin qubits.
- Under Hahn echoes, the coherence time improved to 30 ms for natural Ne and 81 s for purified Ne.
Work was performed, in part, at the Center for Nanoscale Materials (CNM).
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