Enhancement of entanglement concentration using catalysts
| Autor: | Siddhartha Santra, Vladimir S. Malinovsky |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
010304 chemical physics General Physics and Astronomy Quantum Physics Quantum entanglement State (functional analysis) Single copy 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Condensed Matter::Materials Science Transformation (function) 0103 physical sciences Bipartite graph Statistical physics Physics::Chemical Physics Physical and Theoretical Chemistry Quantum Finite set |
| Zdroj: | The Journal of chemical physics. 154(13) |
| ISSN: | 1089-7690 |
| Popis: | Auxiliary pure quantum entangled states shared between two parties can act as catalysts in bipartite entanglement transformations. The participation of a catalyst state in the transformation can enhance its success probability. We consider transformations involving entanglement concentration of a finite number of copies of arbitrary two-qubit pure states into a single copy of a maximally entangled two-qubit pure state using bipartite local quantum operations and classical communication aided by a catalyst state. We show the enhancement of success probabilities of the catalyst-assisted procedure compared to the case where no catalysts are used. The optimal two-qubit catalyst and the maximum probability of the transformation using such catalysts can be obtained analytically. The enhancement of concentration success probability using catalysts of higher dimensions is demonstrated numerically. Finally, catalyst aided strategies for obtaining multiple maximally entangled two-qubit states are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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