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Self-Quenching of Nuclear Spin Dynamics in Central Spin Problem
Arne Brataas, Emmanuel I. Rashba
We consider, in the framework of the central spin model, driven dynamics of two electrons in a double quantum dot subject to hyperfine interaction with nuclear spins and sp…
Driven nonlinear dynamics of two coupled exchange-only qubits
Arijeet Pal, Emmanuel I. Rashba, Bertrand I. Halperin
Inspired by creation of a fast exchange-only qubit (Medford et al., Phys. Rev. Lett., 111, 050501 (2013)), we develop a theory describing the nonlinear dynamics of two such qubits…
Theory of a chiral Fermi liquid: general formalism
Ali Ashrafi, Emmanuel I. Rashba, Dmitrii L. Maslov
We extend the Fermi-liquid (FL) theory to include spin-orbit (SO) splitting of the energy bands, focusing on the Rashba SO coupling as an example. We construct the phenomenological…
The Resonant Exchange Qubit
J. Medford, J. Beil, J. M. Taylor +4
We introduce a solid-state qubit in which exchange interactions among confined electrons provide both the static longitudinal field and the oscillatory transverse field, allowing r…
Self-Consistent Measurement and State Tomography of an Exchange-Only Spin Qubit
J. Medford, J. Beil, J. M. Taylor +7
We report initialization, complete electrical control, and single-shot readout of an exchange-only spin qubit. Full control via the exchange interaction is fast, yielding a demonst…