Information cloning of harmonic oscillator coherent states and its fidelity
| dc.creator | Dass, N. D. Hari | |
| dc.creator | Ganesh, Pradeep | |
| dc.date | 2002-02-04 | |
| dc.date.accessioned | 2026-07-07T06:03:38Z | |
| dc.date.available | 2026-07-07T06:03:38Z | |
| dc.description | We show that in the case of unknown {\em harmonic oscillator coherent states} it is possible to achieve what we call {\it perfect information cloning}. By this we mean that it is still possible to make arbitrary number of copies of a state which has {\it exactly} the same information content as the original unknown coherent state. By making use of this {\it perfect information cloning} it would be possible to estimate the original state through measurements and make arbitrary number of copies of the estimator. We define the notion of a {\em Measurement Fidelity}. We show that this information cloning gives rise, in the case of $1\to N$, to a {\em distribution} of {\em measurement fidelities} whose average value is ${1\over 2}$ irrespective of the number of copies originally made. Generalisations of this to the $M\to MN$ case as well as the measurement fidelities for Gaussian cloners are also given. | |
| dc.description | 4 pages(Two column), Revtex | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0202020 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0202020 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/90014 | |
| dc.subject | Quantum Physics | |
| dc.title | Information cloning of harmonic oscillator coherent states and its fidelity | |
| dc.type | text |