dorsal/arxiv
View SchemaInformation capacity formula of quantum optical channels
| Authors | Masaki Sohma, Osamu Hirota |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0105042 |
| URL | https://arxiv.org/abs/quant-ph/0105042 |
Abstract
The applications of the general formulae of channel capacity developed in the quantum information theory to evaluation of information transmission capacity of optical channel are interesting subjects. In this review paper, we will point out that the formulation based on only classical-quantum channel mapping model may be inadequate when one takes into account a power constraint for noisy channel. To define the power constraint well, we should explicitly consider how quantum states are conveyed through a transmission channel. Basing on such consideration, we calculate a capacity formula for an attenuated noisy optical channel with genreral Gaussian state input; this gives certain progress beyond the example in our former paper.
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"abstract": "The applications of the general formulae of channel capacity developed in the\nquantum information theory to evaluation of information transmission capacity\nof optical channel are interesting subjects. In this review paper, we will\npoint out that the formulation based on only classical-quantum channel mapping\nmodel may be inadequate when one takes into account a power constraint for\nnoisy channel. To define the power constraint well, we should explicitly\nconsider how quantum states are conveyed through a transmission channel. Basing\non such consideration, we calculate a capacity formula for an attenuated noisy\noptical channel with genreral Gaussian state input; this gives certain progress\nbeyond the example in our former paper.",
"arxiv_id": "quant-ph/0105042",
"authors": [
"Masaki Sohma",
"Osamu Hirota"
],
"categories": [
"quant-ph"
],
"title": "Information capacity formula of quantum optical channels",
"url": "https://arxiv.org/abs/quant-ph/0105042"
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