Open AccessPhysical optimization of quantum error correction circuits with spatially separated quantum dot spins
Author(s) -
Hong-Fu Wang,
AiDong Zhu,
Shou Zhang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.012484
Subject(s) - qubit , quantum error correction , quantum network , physics , quantum computer , quantum gate , quantum information , cavity quantum electrodynamics , quantum dot , quantum information science , quantum mechanics , quantum , quantum entanglement , open quantum system
We propose an efficient protocol for optimizing the physical implementation of three-qubit quantum error correction with spatially separated quantum dot spins via virtual-photon-induced process. In the protocol, each quantum dot is trapped in an individual cavity and each two cavities are connected by an optical fiber. We propose the optimal quantum circuits and describe the physical implementation for correcting both the bit flip and phase flip errors by applying a series of one-bit unitary rotation gates and two-bit quantum iSWAP gates that are produced by the long-range interaction between two distributed quantum dot spins mediated by the vacuum fields of the fiber and cavity. The protocol opens promising perspectives for long distance quantum communication and distributed quantum computation networks.