Work

Nonperturbative dynamical decoupling with random control

Year: 2014

Type: article

Abstract: Parametric fluctuations or stochastic signals are introduced into the rectangular pulse sequence to investigate the feasibility of random dynamical decoupling. In a large parameter region, we find that the out-of-order control pulses work as well as the regular pulses for dynamical decoupling and dissipation suppression. Calculations and analysis are enabled by and based on a nonperturbative dynamical decoupling approach allowed by an exact quantum-state-diffusion equation. When the average frequency and duration of the pulse sequence take proper values, the random control sequence is robust, fault-tolerant, and insensitive to pulse strength deviations and interpulse temporal separation in the quasi-periodic sequence. This relaxes the operational requirements placed on quantum control devices to a great deal.

Source: Scientific Reports

DOI: 10.1038/srep06229

Authors: Jun Jing, C. Allen Bishop, Lian-Ao Wu

Institutions: University of the Basque Country, Jilin University, Qubitekk (United States), Ikerbasque

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funders: National Natural Science Foundation of China, Eusko Jaurlaritza, Ministerio de Ciencia e Innovación