Related papers: Parasitic-free gate: A protected switch between idle and entangled states

Parasitic-free gate: A protected switch between idle and entangled states

URL: http://arxiv.org/abs/2202.05208v2
Date: Tue, 19 Jul 2022 07:35:40 GMT
Title: Parasitic-free gate: A protected switch between idle and entangled states
Authors: Xuexin Xu and M. H. Ansari
Abstract summary: We propose a gate to switch superconducting qubit pairs in and out of a two-body interaction. It is imperative that this gate does not spread errors through the quantum register.
Score: 0.8702432681310399
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We propose a gate to switch superconducting qubit pairs in and out of a two-body interaction. This gate uses cross resonance driving on a tunable circuit with adjusted parameters and without accumulating residual ZZ interaction for idle and interacting qubits. It is imperative that this gate does not spread errors through the quantum register. Our detailed theoretical results show that these error-free modes do not necessarily require largely tunable circuits, such as magnetic modulation of qubits or couplers. We obtain the operational gate on weakly tuneable circuits as well and show that switching between them is remarkably fast.

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