Decoherence-assisted quantum driving

• URL: http://arxiv.org/abs/2211.11451v1
• Date: Mon, 21 Nov 2022 13:40:33 GMT
• Title: Decoherence-assisted quantum driving
• Authors: Pavel Cejnar, Pavel Str\'ansk\'y, Jan St\v{r}ele\v{c}ek, Felipe Matus
• Abstract summary: We propose a protocol for transitionless driving of a bound quantum system in its parameter space. We numerically test the protocol in an interacting multiqubit system, demonstrating its dominance over the method of coherent driving.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a protocol for transitionless driving of a bound quantum system in its parameter space using repeated measurement-like interactions with an external spectator system. As a consequence of the quantum Zeno effect, the fidelity of the final state preparation is equal to unity in the limit of infinite-rate interactions. For finite-rate interactions, the maximal fidelity is achieved for the driving trajectory having a minimal geometric length and keeping a constant speed with respect to the Provost-Vallee metric in the parameter space. We numerically test the protocol in an interacting multiqubit system, demonstrating its dominance over the method of coherent driving.

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