Preeti Parashar and Swapan Rana 2009 J. Phys. A: Math. Theor. 42 462003 doi:10.1088/1751-8113/42/46/462003
Reducible correlations in Dicke states
FREE ARTICLEPreeti Parashar and Swapan Rana
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We apply a simple observation to show that the generalized Dicke states can be determined from their reduced subsystems. In this framework, it is sufficient to calculate the expression for only the diagonal elements of the reduced density matrices in terms of the state coefficients. We prove that the correlation in generalized Dicke states |GD(ℓ)N
can be reduced to 2ℓ-partite level. Application to the quantum marginal problem is also discussed.
- PACS
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03.67.Mn Entanglement measures, witnesses, and other characterizations
03.67.Lx Quantum computation architectures and implementations
- MSC
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94A15 Information theory, general (See also 62B10)
81P68 Quantum computation and quantum cryptography (See also 68Q05, 94A60)
- Subjects
- Dates
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Issue 46 (20 November 2009)
Received 14 July 2009, in final form 2 September 2009
Published 28 October 2009
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Reducible correlations in Dicke states
Preeti Parashar and Swapan Rana 2009 J. Phys. A: Math. Theor. 42 462003
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