dorsal/arxiv
View SchemaQuantum Mechanics of Measurement
| Authors | N. J. Cerf, C. Adami |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9605002 |
| URL | https://arxiv.org/abs/quant-ph/9605002 |
Abstract
An analysis of quantum measurement is presented that relies on an information-theoretic description of quantum entanglement. In a consistent quantum information theory of entanglement, entropies (uncertainties) conditional on measurement outcomes can be negative, implying that measurement can be described via unitary, entropy-conserving, interactions, while still producing randomness in a measurement device. In such a framework, quantum measurement is not accompanied by a wave-function collapse, or a quantum jump. The theory is applied to the measurement of incompatible variables, giving rise to a stronger entropic uncertainty relation than heretofore known. It is also applied to standard quantum measurement situations such as the Stern-Gerlach and double-slit experiments to illustrate how randomness, inherent in the conventional quantum probabilities, arises in a unitary framework. Finally, the present view clarifies the relationship between classical and quantum concepts.
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"abstract": "An analysis of quantum measurement is presented that relies on an\ninformation-theoretic description of quantum entanglement. In a consistent\nquantum information theory of entanglement, entropies (uncertainties)\nconditional on measurement outcomes can be negative, implying that measurement\ncan be described via unitary, entropy-conserving, interactions, while still\nproducing randomness in a measurement device. In such a framework, quantum\nmeasurement is not accompanied by a wave-function collapse, or a quantum jump.\nThe theory is applied to the measurement of incompatible variables, giving rise\nto a stronger entropic uncertainty relation than heretofore known. It is also\napplied to standard quantum measurement situations such as the Stern-Gerlach\nand double-slit experiments to illustrate how randomness, inherent in the\nconventional quantum probabilities, arises in a unitary framework. Finally, the\npresent view clarifies the relationship between classical and quantum concepts.",
"arxiv_id": "quant-ph/9605002",
"authors": [
"N. J. Cerf",
"C. Adami"
],
"categories": [
"quant-ph"
],
"title": "Quantum Mechanics of Measurement",
"url": "https://arxiv.org/abs/quant-ph/9605002"
},
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