dorsal/arxiv
View SchemaPhase-covariant cloning of coherent states
| Authors | Massimiliano F. Sacchi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703079 |
| URL | https://arxiv.org/abs/quant-ph/0703079 |
| DOI | 10.1103/PhysRevA.75.042328 |
| Journal | Phys. Rev. A 75, 042328 (2007) |
Abstract
We consider the problem of phase-covariant cloning for coherent states. We show that an experimental scheme based on ideal phase measurement and feedforward outperforms the semiclassical procedure of ideal phase measurement and preparation in terms of fidelity. A realistic scheme where the ideal phase measurement is replaced with double-homodyne detection is shown to be unable to overcome the semiclassical cloning strategy. On the other hand, such a realistic scheme is better than semiclassical cloning based on double-homodyne phase measurement and preparation.
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"abstract": "We consider the problem of phase-covariant cloning for coherent states. We\nshow that an experimental scheme based on ideal phase measurement and\nfeedforward outperforms the semiclassical procedure of ideal phase measurement\nand preparation in terms of fidelity. A realistic scheme where the ideal phase\nmeasurement is replaced with double-homodyne detection is shown to be unable to\novercome the semiclassical cloning strategy. On the other hand, such a\nrealistic scheme is better than semiclassical cloning based on double-homodyne\nphase measurement and preparation.",
"arxiv_id": "quant-ph/0703079",
"authors": [
"Massimiliano F. Sacchi"
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"doi": "10.1103/PhysRevA.75.042328",
"journal_ref": "Phys. Rev. A 75, 042328 (2007)",
"title": "Phase-covariant cloning of coherent states",
"url": "https://arxiv.org/abs/quant-ph/0703079"
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