Entanglement transfer from electrons to photons in quantum dots: An open quantum system approach - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




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Abstract: We investigate entanglement transfer from a system of two spin-entangledelectron-hole pairs, each placed in a separate single mode cavity, to thephotons emitted during their recombination process. Dipole selection rules anda splitting between the light-hole and the heavy-hole subbands are the crucialingredients establishing a one-to-one correspondence between electron spins andcircular photon polarizations. To account for the measurement of the photons aswell as dephasing effects, we choose a stochastic Schroedinger equation and aconditional master equation approach, respectively. The influence ofinteractions with the environment as well as asymmetries in the coherentcouplings on the photon-entanglement is analyzed for two concrete measurementschemes. The first one is designed to violate the Clauser-Horne-Shimony-HoltCHSH inequality, while the second one employs the visibility of interferencefringes to prove the entanglement of the photons. Because of the spatialseparation of the entangled electronic system over two quantum dots, asuccessful verification of entangled photons emitted by this system would implythe detection of nonlocal spin-entanglement of massive particles in a solidstate structure.



Autor: Jan C. Budich, Bjoern Trauzettel

Fuente: https://arxiv.org/







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