One-step transfer or exchange of arbitrary multipartite quantum states with a single-qubit coupler

View/ Open
Issue Date
2015-08-18Author
Yang, Chui-Ping
Su, Qi-Ping
Zheng, Shi-Biao
Han, Siyuan
Publisher
Elsevier
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
The transfer or exchange of multipartite quantum states is critical to the realization of large-scale quantum
information processing and quantum communication. In thiswork,we demonstrate that by using a single quantum
two-level system—a qubit—as a coupler, arbitrary multipartite quantum states (either entangled or separable)
can be transferred or exchanged simultaneously between two sets of qubits. During the entire process, the coupler
remains unexcited minimizing the effect of coupler decoherence on the process. This feature allows one to use
qubits with rapid frequency tunability and a large range of frequency tuning, such as phase qubits, as couplers.
Our findings offer the potential to significantly reduce the resources needed to construct and operate large-scale
quantum information networks consisting of many multiqubit registers, memory cells, and processing units.
Description
This is the published version. Copyright 2015 Elsevier
Collections
Citation
Yang, Chui-Ping, Qi-Ping Su, Shi-Biao Zheng, and Siyuan Han. "One-step Transfer or Exchange of Arbitrary Multipartite Quantum States with a Single-qubit Coupler." Phys. Rev. B Physical Review B 92.5 (2015): n. pag. http://dx.doi.org/10.1103/PhysRevB.92.054509
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.