Electric Field Generation and Control of Bipartite Quantum Entanglement between Electronic Spins in Mixed Valence Polyoxovanadate [GeV14O40]8-
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PALII, Andrew; ALDOSHIN, Serghei; TSUKERBLAT, Boris; BORRAS-ALMENAR, Juan; CLEMENTE-JUAN, Juan; CARDONA-SERRA, Salvador; CORONADO, Eugenio. Electric Field Generation and Control of Bipartite Quantum Entanglement between Electronic Spins in Mixed Valence Polyoxovanadate [GeV14O40]8-. In: Inorganic Chemistry. 2017, nr. 16(56), pp. 9547-9554. ISSN 0020-1669.
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Inorganic Chemistry
Numărul 16(56) / 2017 / ISSN 0020-1669

Electric Field Generation and Control of Bipartite Quantum Entanglement between Electronic Spins in Mixed Valence Polyoxovanadate [GeV14O40]8-


DOI: 10.1021/acs.inorgchem.7b00991
Pag. 9547-9554

Palii Andrew12, Aldoshin Serghei1, Tsukerblat Boris3, Borras-Almenar Juan4, Clemente-Juan Juan4, Cardona-Serra Salvador4, Coronado Eugenio4
 
1 Institute of Problems of Chemical Physics, Russian Academy of Sciences,
2 Institute of Applied Physics, Academy of Sciences of Moldova,
3 Ben-Gurion University of the Negev,
4 Universitat de València
 
Disponibil în IBN: 13 februarie 2018


Rezumat

As part of the search for systems in which control of quantum entanglement can be achieved, here we consider the paramagnetic mixed valence polyoxometalate K2Na6[GeV14O40]·10H2O in which two electrons are delocalized over the 14 vanadium ions. Applying a homogeneous electric field can induce an antiferromagnetic coupling between the two delocalized electronic spins that behave independently in the absence of the field. On the basis of the proposed theoretical model, we show that the external field can be used to generate controllable quantum entanglement between the two electronic spins traveling over a vanadium network of mixed valence polyoxoanion [GeV14O40]8-. Within a simplified two-level picture of the energy pattern of the electronic pair based on the previous ab initio analysis, we evaluate the temperature and field dependencies of concurrence and thus indicate that the entanglement can be controlled via the temperature, magnitude, and orientation of the electric field with respect to molecular axes of [GeV14O40]8-.