Randomly Generating Four Mixed Bell-Diagonal States with a Concurrences Sum to Unity
A two-qubit system in quantum information theory is the simplest bipartite quantum system and its concurrence for pure and mixed states is well known. As a subset of two-qubit systems, Bell-diagonal states can be depicted by a very simple geometrical representation of a tetrahedron with sides of l...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2012
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| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/184/ http://eprints.intimal.edu.my/184/1/24-ft.pdf |
| Summary: | A two-qubit system in quantum information theory is the simplest bipartite quantum system and its concurrence
for pure and mixed states is well known. As a subset of two-qubit systems, Bell-diagonal states can be depicted
by a very simple geometrical representation of a tetrahedron with sides of length 2
√
2. Based on this geometric
representation, we propose a simple approach to randomly generate four mixed Bell decomposable states in which
the sum of their concurrence is equal to one. |
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