dorsal/arxiv
View SchemaBell-Correlated Activable Bound Entanglement in Multiqubit Systems
| Authors | Somshubhro Bandyopadhyay, Indrani Chattopadhyay, Vwani P. Roychowdhury, Debasis Sarkar |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0411082 |
| URL | https://arxiv.org/abs/quant-ph/0411082 |
| DOI | 10.1103/PhysRevA.71.062317 |
| Journal | Phys. Rev. A 71, 062317, (2005) |
Abstract
We show that the Hilbert space of even number ($\geq4$) of qubits can always be decomposed as a direct sum of four orthogonal subspaces such that the normalized projectors onto the subspaces are activable bound entangled (ABE) states. These states also show a surprising recursive relation in the sense that the states belonging to $2N+2$ qubits are Bell correlated to the states of $2N$ qubits; hence, we refer to these states as Bell-Correlated ABE (BCABE) states. We also study the properties of noisy BCABE states and show that they are very similar to that of two qubit Bell-diagonal states.
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"abstract": "We show that the Hilbert space of even number ($\\geq4$) of qubits can always\nbe decomposed as a direct sum of four orthogonal subspaces such that the\nnormalized projectors onto the subspaces are activable bound entangled (ABE)\nstates. These states also show a surprising recursive relation in the sense\nthat the states belonging to $2N+2$ qubits are Bell correlated to the states of\n$2N$ qubits; hence, we refer to these states as Bell-Correlated ABE (BCABE)\nstates. We also study the properties of noisy BCABE states and show that they\nare very similar to that of two qubit Bell-diagonal states.",
"arxiv_id": "quant-ph/0411082",
"authors": [
"Somshubhro Bandyopadhyay",
"Indrani Chattopadhyay",
"Vwani P. Roychowdhury",
"Debasis Sarkar"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.062317",
"journal_ref": "Phys. Rev. A 71, 062317, (2005)",
"title": "Bell-Correlated Activable Bound Entanglement in Multiqubit Systems",
"url": "https://arxiv.org/abs/quant-ph/0411082"
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