dorsal/arxiv
View SchemaRole of entanglement and correlations in dense coding
| Authors | Mario Ziman, Vladimir Buzek |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205078 |
| URL | https://arxiv.org/abs/quant-ph/0205078 |
Abstract
Usually it is assumed that quantum dense coding is due to quantum entanglement between two parties. We show that this phenomenon has its origin in {\em correlations} between two parties rather than simply in entanglement. In order to justify our argument we evaluate a capacity of the noiseless channel for two cases: (1) when Bob performs measurement just on the particle received from Alice and (2) in the case when he utilizes the whole potential of the dense coding, that is, he performs the measurement on the received particle and the particle he had prior to the communication. We also present a simple classical scenario which might serve as a prototype of the dense coding. We generalize our results also for qudits.
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"abstract": "Usually it is assumed that quantum dense coding is due to quantum\nentanglement between two parties. We show that this phenomenon has its origin\nin {\\em correlations} between two parties rather than simply in entanglement.\nIn order to justify our argument we evaluate a capacity of the noiseless\nchannel for two cases: (1) when Bob performs measurement just on the particle\nreceived from Alice and (2) in the case when he utilizes the whole potential of\nthe dense coding, that is, he performs the measurement on the received particle\nand the particle he had prior to the communication. We also present a simple\nclassical scenario which might serve as a prototype of the dense coding. We\ngeneralize our results also for qudits.",
"arxiv_id": "quant-ph/0205078",
"authors": [
"Mario Ziman",
"Vladimir Buzek"
],
"categories": [
"quant-ph"
],
"title": "Role of entanglement and correlations in dense coding",
"url": "https://arxiv.org/abs/quant-ph/0205078"
},
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