Formulas for Rational-Valued Separability Probabilities of Random Induced Generalized Two-Qubit States

Paul B. Slater and Charles F. Dunkl

Advances in Mathematical Physics, 2015, vol. 2015, 1-9

Abstract:

Previously, a formula, incorporating a hypergeometric function, for the Hilbert-Schmidt-averaged determinantal moments of density-matrices ( ) and their partial transposes ( ), was applied with to the generalized two-qubit separability probability question. The formula can, furthermore, be viewed, as we note here, as an averaging over “induced measures in the space of mixed quantum states.” The associated induced-measure separability probabilities ( ) are found— via a high-precision density approximation procedure—to assume interesting, relatively simple rational values in the two-re[al]bit ( ), (standard) two-qubit ( ), and two-quater[nionic]bit ( ) cases. We deduce rather simple companion (rebit, qubit, quaterbit, …) formulas that successfully reproduce the rational values assumed for general . These formulas are observed to share certain features, possibly allowing them to be incorporated into a single master formula.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlamp:621353

DOI: 10.1155/2015/621353

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