About economic qubit cloning
| dc.creator | Durt, Thomas | |
| dc.creator | Du, Jiangfeng | |
| dc.date | 2003-09-09 | |
| dc.date.accessioned | 2026-07-07T06:07:47Z | |
| dc.date.available | 2026-07-07T06:07:47Z | |
| dc.description | In this paper we establish a deep connection between the 3 qubit one-to-two phase-covariant quantum cloning network of Fuchs et al. [C. Fuchs, N. Gisin, R.B. Griffiths, C.S. Niu, and A. Peres, Phys. Rev. A 56 no 4, 1163 (1997)], and its economic 2 qubit counterpart due to Niu and Griffiths [Phys.Rev. A 60 no 4, 2764 (1999)]. A general, necessary and sufficient criterion is derived in order to characterize the reducibility of 3 qubit cloners to 2 qubit cloners. When this criterion is fulfilled, economic cloning is possible. We show that the optimal isotropic or universal 3 qubit cloning machine is not reducible to a 2 qubit cloner. | |
| dc.description | No figures | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0309072 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0309072 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/91416 | |
| dc.subject | Quantum Physics | |
| dc.title | About economic qubit cloning | |
| dc.type | text |