Quantum cloning with nonlocal assistance: Complement of Jozsa's stronger no-cloning theorem
| dc.creator | Azuma, Koji | |
| dc.creator | Koashi, Masato | |
| dc.creator | Katsura, Hosho | |
| dc.creator | Imoto, Nobuyuki | |
| dc.date | 2006-04-03 | |
| dc.date.accessioned | 2026-07-07T07:11:46Z | |
| dc.date.available | 2026-07-07T07:11:46Z | |
| dc.description | We investigate the cases where a set $S$ of states $\{\ket{ψ_i} \}$ cannot be cloned by itself, but is clonable with the help of another system prepared in state $\hatρ_i$. When $S$ is pair-wise nonorthogonal, it is known that one can generate the copy from $\hatρ_i$ alone, with no interaction with the original system. Here we show that a set containing orthogonal pairs exhibits a property forming a striking contrast; For any such set, there is a choice of $\hatρ_i$ that enables cloning only when the two systems are interacted in a purely quantum manner that is not achievable via classical communication. | |
| dc.description | 4 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0604009 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0604009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/111886 | |
| dc.subject | Quantum Physics | |
| dc.title | Quantum cloning with nonlocal assistance: Complement of Jozsa's stronger no-cloning theorem | |
| dc.type | text |