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Abstract
We propose a quantum-state transfer protocol in a spin chain that requires only the control of the spins at the ends of the quantum wire. The protocol is to a large extent insensitive to inhomogeneity caused by local magnetic fields and perturbation of exchange couplings. Moreover, apart from the free evolution regime, it allows one to induce an adiabatic spin transfer, which provides the possibility of performing the transfer on demand. We also show that the amount of information leaking into the central part of the chain is small throughout the whole transfer process (which protects the information sent from being eavesdropped) and can be controlled by the magnitude of the external magnetic field.
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Authors (3)
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Kamil Korzekwa
- Politechnika Wrocławska .
-
Paweł Machnikowski
- Politechnika Wrocławska Wydział Fizyki
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1103/PhysRevA.89.062301
- License
- Copyright (2014 American Physical Society)
Keywords
Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
PHYSICAL REVIEW A
no. 89,
pages 1 - 6,
ISSN: 2469-9926 - Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Korzekwa K., Machnikowski P., Horodecki P.: Quantum-state transfer in spin chains via isolated resonance of terminal spins// PHYSICAL REVIEW A. -Vol. 89, nr. 062301 (2014), s.1-6
- DOI:
- Digital Object Identifier (open in new tab) 10.1103/physreva.89.062301
- Verified by:
- Gdańsk University of Technology
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