论文标题

使用最陡峭的量子量子热力学框架,超导量子装置中的变质预测

Decoherence predictions in a superconductive quantum device using the steepest-entropy-ascent quantum thermodynamics framework

论文作者

Montanez-Barrera, J. A., von Spakovsky, M. R., Damian-Ascencio, C. E., Cano-Andrade, S.

论文摘要

量子计算技术的当前阶段,称为嘈杂的中间量子量子(NISQ)技术,其特征是较大的错误,禁止其用于实际应用。在这些设备中,错误的误差来源之一,通常由马尔可夫主方程(例如lindblad master方程)建模。在这项工作中,从最陡峭的量子量子热力学(SEAQT)框架的角度来解决了变质现象,其中部分被视为系统内部的噪声。该框架也用于描述与环境相互作用相关的能量的变化。三种情况,一个反演恢复实验,一个拉姆西实验和两量纠缠识别实验,用于证明该框架的适用性,该框架相对于实验和lindblad方程提供了良好的结果,但是,从不同的角度来看,它确实是这样做的。这些实验是在IBM超导量子设备IBMQ_BOGOTA上进行的。

The current stage of quantum computing technology, called noisy intermediate-scale quantum (NISQ) technology, is characterized by large errors that prohibit it from being used for real applications. In these devices, decoherence, one of the main sources of error, is generally modeled by Markovian master equations such as the Lindblad master equation. In this work, the decoherence phenomena are addressed from the perspective of the steepest-entropy-ascent quantum thermodynamics (SEAQT) framework in which the noise is in part seen as internal to the system. The framework is as well used to describe changes in the energy associated with environmental interactions. Three scenarios, an inversion recovery experiment, a Ramsey experiment, and a two-qubit entanglement-disentanglement experiment, are used to demonstrate the applicability of this framework, which provides good results relative to the experiments and the Lindblad equation, It does so, however, from a different perspective as to the cause of the decoherence. These experiments are conducted on the IBM superconductive quantum device ibmq_bogota.

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