期刊
PHYSICAL REVIEW A
卷 79, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.054304
关键词
protocols; quantum computing
资金
- EU 6FP programmes QAP
- SCALA
We present a perfect state transfer protocol via a qubit chain with the evolution governed by the xx Hamiltonian. In contrast to the recent protocol announced in Phys. Rev. Lett. 101, 230502 (2008), our method does not demand any remote-cooperated initialization and sending classical information about measurement outcomes. We achieve the perfect state transfer only with the assumption of access to two spins at each end of the chain, while the initial state of the whole chain is irrelevant.
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