| Issue |
EPL
Volume 84, Number 3, November 2008
|
|
|---|---|---|
| Article Number | 30004 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/84/30004 | |
| Published online | 17 October 2008 | |
The Peierls distorted chain as a quantum data bus for quantum state transfer
1
Department of Physics, Nankai University - Tianjin 300071, China
2
Institute of Theoretical Physics, Chinese Academy of Sciences - Beijing 100080, China
Corresponding authors: songtc@nankai.edu.cn suncp@itp.ac.cn
Received:
3
May
2008
Accepted:
22
September
2008
We study the quantum state transfer (QST) of an electron spin along the half-filled Peierls distorted chain (PDC). As has been proved, this solvable and feasible gapped model can accomplish a high-fidelity and long-distance QST. Moreover, numerical simulations are performed in and near the non-distortion point which is beyond the range of perturbation. The result shows that the efficiency of the QST is sensitive to the uniform-to-distorted transition of the PDC, which is related to the transition between the conductor and the insulator. Then this scheme can also be employed to probe the conductor-to-insulator transition of the PDC.
PACS: 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 75.10.Jm – Quantized spin models / 03.67.Lx – Quantum computation architectures and implementations
© EPLA, 2008
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