Stark-chirped rapid adiabatic passage in the presence of dissipation for quantum computation

TL;DR

This paper studies how dissipation affects the efficiency of Stark-chirped rapid adiabatic passage (SCRAP) in quantum gates, demonstrating robustness against weak dissipation and supporting practical quantum computing implementations.

Contribution

It provides an analysis of dissipation effects on SCRAP-based quantum gates, showing their robustness and feasibility in realistic noisy systems.

Findings

SCRAP-based gates are robust against weak dissipation

Non-adiabatic transition effects are relatively small

SCRAP remains feasible in noisy physical systems

Abstract

Stark-chirped rapid adiabatic passage (SCRAP) is an important technique used for coherent quantum controls. In this paper we investigate how the practically-existing dissipation of the system influences on the efficiency of the passage, and thus the fidelities of the SCRAP-based quantum gates. With flux-biased Josephson qubits as a specifical example, our results show clearly that the efficiency of the logic gates implemented by SCRAP are robust against the weak dissipation. The influence due to the non-adiabtic transitions between the adiabatic passages is comparatively significantly small. Therefore, the SCRAP-based logic gates should be feasible for the realistic physical systems with noises.