Remote state preparation with unit success probability

被引：11

作者：

Nguyen B.A. ^{[1
,3
]}

Cao T.B. ^{[1
]}

Nung V.D. ^{[2
]}

Kim J. ^{[3
]}

机构：

[1] Center for Theoretical Physics, Institute of Physics, Ba Dinh, Hanoi

[2] Department of Physics, Hanoi National University, Thanh Xuan, Hanoi

[3] School of Computational Sciences, Korea Institute for Advanced Study, Dongdaemun-gu, Seoul 130-722

来源：

Advances in Natural Sciences: Nanoscience and Nanotechnology | 2011年 / 2卷 / 03期

关键词：

Adaptive measurements; Remote state preparation; Unit probability;

D O I：

10.1088/2043-6262/2/3/035009

中图分类号：

学科分类号：

摘要：

Remote state preparation is a secure and faithful method for transmitting known quantum states by means of local operation and classical communication. Existing protocols in the general case succeed just with probabilities of less than 100%. In this paper, we design a protocol to remotely prepare the most general single-qubit state that always succeeds. To achieve unit success probability, the preparer is allowed to use additional local resources and implement adaptive measurements. Our protocol is meaningful because the most expensive resource, i.e. the quantum channel previously shared between the preparer and the receiver, remains the same as in the original protocol (Pati 2000 Phys. Rev. A 63 014302), which, however, succeeds only half the time. © 2011 Vietnam Academy of Science & Technology.

引用

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