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http://hdl.handle.net/2289/3544Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Bhardwaj, Shanthanu | - |
| dc.contributor.author | Ravishankar, V. | - |
| dc.date.accessioned | 2008-06-04T07:59:55Z | - |
| dc.date.available | 2008-06-04T07:59:55Z | - |
| dc.date.issued | 2008-02 | - |
| dc.identifier.citation | Physical Review A, 2008, Vol.77, 022322 | en |
| dc.identifier.issn | 1094-1622 (online) | - |
| dc.identifier.issn | 1050-2947 (print) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/3544 | - |
| dc.description | Open Access | en |
| dc.description.abstract | We propose that the entanglement of mixed states is characterized properly in terms of a probability density function [script P]rho([script E]). There is a need for such a measure since the prevalent measures (such as concurrence and negativity) for two-qubit systems are rough benchmarks and not monotones of each other. Focusing on the two-qubit states, we provide an explicit construction of [script P]rho([script E]) and show that it is characterized by a set of parameters of which concurrence is but one particular combination. [script P]rho([script E]) is manifestly invariant under SU(2)×SU(2) transformations. It can, in fact, reconstruct the state up to local operations—with the specification of at most four additional parameters. Finally, the measure resolves the controversy regarding the role of entanglement in quantum computation in NMR systems. | en |
| dc.format.extent | 204574 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en | en |
| dc.publisher | American Physical Society | en |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevA.77.022322 | en |
| dc.relation.uri | http://arxiv.org/abs/0801.1545 | en |
| dc.rights | 2008 The American Physical Society | en |
| dc.title | Characteristics and benchmarks of entanglement of mixed states: The two-qubit case | en |
| dc.type | Article | en |
| Appears in Collections: | Research Papers (LAMP) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2008 PRA V77 a022322.pdf | Open Access | 199.78 kB | Adobe PDF | View/Open |
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