dorsal/arxiv
View SchemaUniversal cloning of continuous quantum variables
| Authors | N. J. Cerf, A. Ipe, X. Rottenberg |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9909037 |
| URL | https://arxiv.org/abs/quant-ph/9909037 |
| DOI | 10.1103/PhysRevLett.85.1754 |
| Journal | Phys. Rev. Lett. 85 (2000) 1754 |
Abstract
The cloning of quantum variables with continuous spectra is analyzed. A universal - or Gaussian - quantum cloning machine is exhibited that copies equally well the states of two conjugate variables such as position and momentum. It also duplicates all coherent states with a fidelity of 2/3. More generally, the copies are shown to obey a no-cloning Heisenberg-like uncertainty relation.
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"abstract": "The cloning of quantum variables with continuous spectra is analyzed. A\nuniversal - or Gaussian - quantum cloning machine is exhibited that copies\nequally well the states of two conjugate variables such as position and\nmomentum. It also duplicates all coherent states with a fidelity of 2/3. More\ngenerally, the copies are shown to obey a no-cloning Heisenberg-like\nuncertainty relation.",
"arxiv_id": "quant-ph/9909037",
"authors": [
"N. J. Cerf",
"A. Ipe",
"X. Rottenberg"
],
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"quant-ph"
],
"doi": "10.1103/PhysRevLett.85.1754",
"journal_ref": "Phys. Rev. Lett. 85 (2000) 1754",
"title": "Universal cloning of continuous quantum variables",
"url": "https://arxiv.org/abs/quant-ph/9909037"
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