Dephasing time of GaAs electron-spin qubits coupled to a nuclear bath exceeding 200 μs

By Hendrik Bluhm, S. Foletti, I. Neder, Mark Rudner, D. Mahalu, V. Umansky, A. Yacoby. 2011

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One-Way Quantum Repeater Based on Near-Deterministic Photon-Emitter Interfaces (2019, methodology): “For quantum dots, dynamical decoupling [46] or coupling to a nuclear spin memory [47] may be employed to increase coherence times motivating further development of such techniques.”
Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems (2012, background): “However, the interaction between the spin and its surrounding spin bath (mainly nuclear spins) has so far limited coherence times to hundreds of microseconds or less (Bluhm et al., 2011).”
1 / f noise: Implications for solid-state quantum information (2013, methodology): “DD has been proposed as a method to extend decoherence times in solid-state quantum hardware, and has been recently applied to decouple spin baths in semiconductor-based qubits (Barthel et al., 2010; Bluhm et al., 2011; de Lange et al., 2012; Ryan et al., 2010) and 1/f noise in superconducting”