dorsal/arxiv
View SchemaOn the meaning of entanglement in quantum measurement
| Authors | Fedor Herbut |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0311192 |
| URL | https://arxiv.org/abs/quant-ph/0311192 |
Abstract
Measurement interaction between a measured object and a measuring instrument, if both are initially in a pure state, produces a (final) bipartite entangled state vector. The quasi-classical part of the correlations in it is connected with transmission of information in the measurement. But, prior to "reading" the instrument, there is also purely quantum entanglement in the final state vector. It is shown that in repeatable measurement quantitatively the entanglement equals the amount of incompatibility between the measured observable and the final state. It also equals the amount of incompatibility of the observable and the initial state of the object.
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"abstract": "Measurement interaction between a measured object and a measuring instrument,\nif both are initially in a pure state, produces a (final) bipartite entangled\nstate vector. The quasi-classical part of the correlations in it is connected\nwith transmission of information in the measurement. But, prior to \"reading\"\nthe instrument, there is also purely quantum entanglement in the final state\nvector. It is shown that in repeatable measurement quantitatively the\nentanglement equals the amount of incompatibility between the measured\nobservable and the final state. It also equals the amount of incompatibility of\nthe observable and the initial state of the object.",
"arxiv_id": "quant-ph/0311192",
"authors": [
"Fedor Herbut"
],
"categories": [
"quant-ph"
],
"title": "On the meaning of entanglement in quantum measurement",
"url": "https://arxiv.org/abs/quant-ph/0311192"
},
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