Work

Concatenating dynamical decoupling with decoherence-free subspaces for quantum computation

Year: 2004

Type: article

Abstract: A scheme to implement a quantum computer subjected to decoherence and governed by an untunable qubit-qubit interaction is presented. By concatenating dynamical decoupling through bang-bang (BB) pulse with decoherence-free subspaces (DFSs) encoding, we protect the quantum computer from environment-induced decoherence that results in quantum information dissipating into the environment. For the inherent qubit-qubit interaction that is untunable in the quantum system, BB control plus DFSs encoding will eliminate its undesired effect which spoils quantum information in qubits. We show how this quantum system can be used to implement universal quantum computation.

Source: Physical Review A

DOI: 10.1103/physreva.69.042315

Authors: Yong Zhang, Zheng-Wei Zhou, Bo Yu, Guang-Can Guo

Institutions: University of Science and Technology of China, Chinese Academy of Sciences, CAS Key Laboratory of Quantum Information, USTC

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Chinese Academy of Sciences

OpenAlex ID: W1988566877

FWCI: 1.303

Cites: 32

Cited by: 15

Related to: 10