dorsal/arxiv
View SchemaNovel cloning machine with supplementary information
| Authors | Daowen Qiu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0511058 |
| URL | https://arxiv.org/abs/quant-ph/0511058 |
| DOI | 10.1088/0305-4470/39/18/026 |
| Journal | J. Phys. A: Math. Gen. 39 (2006) 5135-5150 |
Abstract
Probabilistic cloning was first proposed by Duan and Guo. Then Pati established a novel cloning machine (NCM) for copying superposition of multiple clones simultaneously. In this paper, we deal with the novel cloning machine with supplementary information (NCMSI). For the case of cloning two states, we demonstrate that the optimal efficiency of the NCMSI in which the original party and the supplementary party can perform quantum communication equals that achieved by a two-step cloning protocol wherein classical communication is only allowed between the original and the supplementary parties. From this equivalence it follows that NCMSI may increase the success probabilities for copying. Also, an upper bound on the unambiguous discrimination of two nonorthogonal pure product states is derived. Our investigation generalizes and completes the results in the literature.
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"abstract": "Probabilistic cloning was first proposed by Duan and Guo. Then Pati\nestablished a novel cloning machine (NCM) for copying superposition of multiple\nclones simultaneously. In this paper, we deal with the novel cloning machine\nwith supplementary information (NCMSI). For the case of cloning two states, we\ndemonstrate that the optimal efficiency of the NCMSI in which the original\nparty and the supplementary party can perform quantum communication equals that\nachieved by a two-step cloning protocol wherein classical communication is only\nallowed between the original and the supplementary parties. From this\nequivalence it follows that NCMSI may increase the success probabilities for\ncopying. Also, an upper bound on the unambiguous discrimination of two\nnonorthogonal pure product states is derived. Our investigation generalizes and\ncompletes the results in the literature.",
"arxiv_id": "quant-ph/0511058",
"authors": [
"Daowen Qiu"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/0305-4470/39/18/026",
"journal_ref": "J. Phys. A: Math. Gen. 39 (2006) 5135-5150",
"title": "Novel cloning machine with supplementary information",
"url": "https://arxiv.org/abs/quant-ph/0511058"
},
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