dorsal/arxiv
View SchemaInformation-Theoretic Measure of Genuine Multi-Qubit Entanglement
| Authors | Jian-Ming Cai, Zheng-Wei Zhou, Xing-Xiang Zhou, Guang-Can Guo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609027 |
| URL | https://arxiv.org/abs/quant-ph/0609027 |
| DOI | 10.1103/PhysRevA.74.042338 |
| Journal | Phys. Rev. A 74, 042338 (2006) |
Abstract
We consider pure quantum states of N qubits and study the genuine N-qubit entanglement that is shared among all the N qubits. We introduce an information-theoretic measure of genuine N-qubit entanglement based on bipartite partitions. When N is an even number, this measure is presented in a simple formula, which depends only on the purities of the partially reduced density matrices. It can be easily computed theoretically and measured experimentally. When N is an odd number, the measure can also be obtained in principle.
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"abstract": "We consider pure quantum states of N qubits and study the genuine N-qubit\nentanglement that is shared among all the N qubits. We introduce an\ninformation-theoretic measure of genuine N-qubit entanglement based on\nbipartite partitions. When N is an even number, this measure is presented in a\nsimple formula, which depends only on the purities of the partially reduced\ndensity matrices. It can be easily computed theoretically and measured\nexperimentally. When N is an odd number, the measure can also be obtained in\nprinciple.",
"arxiv_id": "quant-ph/0609027",
"authors": [
"Jian-Ming Cai",
"Zheng-Wei Zhou",
"Xing-Xiang Zhou",
"Guang-Can Guo"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.042338",
"journal_ref": "Phys. Rev. A 74, 042338 (2006)",
"title": "Information-Theoretic Measure of Genuine Multi-Qubit Entanglement",
"url": "https://arxiv.org/abs/quant-ph/0609027"
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