dorsal/arxiv
View SchemaEquivalence between squeezed-state and twin-beam communication channels
| Authors | Giacomo Mauro D'Ariano, Massimiliano Sacchi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9704033 |
| URL | https://arxiv.org/abs/quant-ph/9704033 |
| DOI | 10.1142/S0217984997001511 |
| Journal | Modern Phys. Lett. B11, 1263 (1997). |
Abstract
We show the equivalence between two different communication schemes that employ a couple of modes of the electromagnetic field. One scheme uses unconventional heterodyne detection, with correlated signal and image-band modes in a twin-beam state from parametric downconversion. The other scheme is realized through a complex-number coding over quadrature-squeezed states of two uncorrelated modes, each detected by ordinary homodyning. This equivalence concerns all the stages of the communication channel: the encoded state, the optimal amplifier for the channel, the master equation modeling the loss, and the output measurement scheme. The unitary transformation that connects the two communication schemes is realized by a frequency conversion device.
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"abstract": "We show the equivalence between two different communication schemes that\nemploy a couple of modes of the electromagnetic field. One scheme uses\nunconventional heterodyne detection, with correlated signal and image-band\nmodes in a twin-beam state from parametric downconversion. The other scheme is\nrealized through a complex-number coding over quadrature-squeezed states of two\nuncorrelated modes, each detected by ordinary homodyning. This equivalence\nconcerns all the stages of the communication channel: the encoded state, the\noptimal amplifier for the channel, the master equation modeling the loss, and\nthe output measurement scheme. The unitary transformation that connects the two\ncommunication schemes is realized by a frequency conversion device.",
"arxiv_id": "quant-ph/9704033",
"authors": [
"Giacomo Mauro D\u0027Ariano",
"Massimiliano Sacchi"
],
"categories": [
"quant-ph"
],
"doi": "10.1142/S0217984997001511",
"journal_ref": "Modern Phys. Lett. B11, 1263 (1997).",
"title": "Equivalence between squeezed-state and twin-beam communication channels",
"url": "https://arxiv.org/abs/quant-ph/9704033"
},
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