Speaker
Mr
Yi Shi
(University College London)
Description
We propose an interacting many-body spin model with nearest-neighbor and next-nearest neighbor couplings, where the two lowest eigenstates form a qubit manifold that is protected by symmetry from both relaxation and dephasing caused by local perturbations. We map the spin model to a superconducting circuit and show that such a circuit can reach coherence times exceeding several milliseconds in the presence of realistic environmental noise. The control of the device can be realized by the STIRAP scheme using higher energy states of the device, which also contribute to the dispersive readout of the device. Such a design may deliver improved performance relative to
existing superconducting qubits.
| Session Selection | Condensed Matter |
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