dorsal/arxiv
View SchemaRecycling of quantum information: Multiple observations of quantum clocks
| Authors | Vladimir Buzek, Peter L. Knight, Nobuyuki Imoto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0006048 |
| URL | https://arxiv.org/abs/quant-ph/0006048 |
Abstract
How much information about the original state preparation can be extracted from a quantum system which already has been measured? That is, how many independent (non-communicating) observers can measure the quantum system sequentially and give a nontrivial estimation of the original unknown state? We investigate these questions and we show from a simple example that quantum information is not entirely lost as a result of the measurement-induced collapse of the quantum state, and that an infinite number of independent observers who have no prior knowledge about the initial state can gain a partial information about the original preparation of the quantum system.
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"abstract": "How much information about the original state preparation can be extracted\nfrom a quantum system which already has been measured? That is, how many\nindependent (non-communicating) observers can measure the quantum system\nsequentially and give a nontrivial estimation of the original unknown state? We\ninvestigate these questions and we show from a simple example that quantum\ninformation is not entirely lost as a result of the measurement-induced\ncollapse of the quantum state, and that an infinite number of independent\nobservers who have no prior knowledge about the initial state can gain a\npartial information about the original preparation of the quantum system.",
"arxiv_id": "quant-ph/0006048",
"authors": [
"Vladimir Buzek",
"Peter L. Knight",
"Nobuyuki Imoto"
],
"categories": [
"quant-ph"
],
"title": "Recycling of quantum information: Multiple observations of quantum clocks",
"url": "https://arxiv.org/abs/quant-ph/0006048"
},
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