期刊
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
卷 20, 期 5, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219749922500095
关键词
Quantum state transfer; quantum correction algorithms; quantum networks
类别
资金
- Centre for Advanced Applied Sciences [CZ.02.1.01/0.0/0.0/16 019/0000778]
- Operational Programme Research, Development and Education
- European Structural and Investment Funds
- state budget of the Czech Republic
- Czech Science Foundation [GA CR 19-15744Y]
- [RVO 14000]
This paper analyzes the realistic flaws in complex next-to-nearest-neighbor networks of qubits and demonstrates their negative impact on network performance. It proposes the use of dynamical decoupling to stabilize these networks and compares different dynamical decoupling schemes.
Perfect State Transfer is known to be possible on complex next-to-nearest-neighbor structures of qubits. The complexity of these networks coupled with the pervasive imperfections of the real world can lead to shortcomings in their practical construction. We analyze several realistic categories of flaws in the networks and show that they can have a harsh effect on the network's performance. Dynamical decoupling is a known quantum error correction algorithm that can be used for partial or complete mitigation of undesired artefacts in quantum systems. We show here that dynamical decoupling can, in principle, also be used to stabilize the complex next-to-nearest-neighbor networks of qubits. We compare the proposed dynamical decoupling schemes with a baseline of dynamical decoupling scheme that eliminates all but one path to quantum state transfer on the network, thus effectively transforming it to a nearest-neighbor chain.
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