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arXiv 2004-05-25 0 views

Realistic operation of an entangler: a density matrix approach

Sauret, Olivier · Feinberg, Denis · Martin, Thierry

Original · EN

The detailed operation of an electron spin entangler is studied, using density matrix equations. The device is made of a superconductor, two quantum dots and two normal leads. The treatment takes into account coherent tunneling in a non-perturbative way, and analyzes the various parasitic effects, in addition to the main process (crossed Andreev reflection): those include singlet pairs passing through a single dot, or cotunneling between dots through the superconductor. The optimum operation of the device is characterized.

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