1203.4444 (M. M. Santos et al.)

Using quantum state protection via dissipation in a quantum-dot molecule
to solve the Deutsch problem    [PDF]

M. M. Santos, F. O. Prado, H. S. Borges, A. M. Alcalde, J. M. Villas-Bôas, E. I. Duzzioni

The wide set of control parameters and reduced size scale make semiconductor quantum dots attractive candidates to implement solid-state quantum computation. Considering an asymmetric double quantum dot coupled by tunneling, we combine the action of a laser field and the spontaneous emission of the excitonic state to protect an arbitrary superposition state of the indirect exciton and ground state. As a by-product we show how to use the protected state to solve the Deutsch problem.

View original: http://arxiv.org/abs/1203.4444