dorsal/arxiv
View SchemaIsotropic quantum spin channels and additivity questions
| Authors | Robert Alicki |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0402080 |
| URL | https://arxiv.org/abs/quant-ph/0402080 |
Abstract
The minimum entropy output is computed for rotationally invariant quantum channels acting on spin-1/2 and spin-1 systems. For the case of two parallel such channels and initial entangled (singlet) state the entropy of the output is higher then the doubled minimal entropy output of the single channel. This gives a certain moral support to the additivity hypothesis. Another related simple function of the channel (minimum entropy gain) is shown to be additive in general.
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"abstract": "The minimum entropy output is computed for rotationally invariant quantum\nchannels acting on spin-1/2 and spin-1 systems. For the case of two parallel\nsuch channels and initial entangled (singlet) state the entropy of the output\nis higher then the doubled minimal entropy output of the single channel. This\ngives a certain moral support to the additivity hypothesis. Another related\nsimple function of the channel (minimum entropy gain) is shown to be additive\nin general.",
"arxiv_id": "quant-ph/0402080",
"authors": [
"Robert Alicki"
],
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"title": "Isotropic quantum spin channels and additivity questions",
"url": "https://arxiv.org/abs/quant-ph/0402080"
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