We study the hamiltonian and dissipative dynamics of a system undergoing a sequence of level crossings. The resulting Landau-Zener effect makes a new implementation of a general single qubit gate possible. In the dissipative case, with a periodic bias, the level crossing counteracts the interlevel relaxation and drives the system toward a two dimensional attractor. This feature can in principle be used to implement quantum memory devices of new type.
A sigle qubit Landau-Zener gate / V. G. Benza, G. Strini. - In: FORTSCHRITTE DER PHYSIK. - ISSN 0015-8208. - 51:1(2003), pp. 14-21. [10.1002/prop.200390000]
A sigle qubit Landau-Zener gate
G. StriniUltimo
2003
Abstract
We study the hamiltonian and dissipative dynamics of a system undergoing a sequence of level crossings. The resulting Landau-Zener effect makes a new implementation of a general single qubit gate possible. In the dissipative case, with a periodic bias, the level crossing counteracts the interlevel relaxation and drives the system toward a two dimensional attractor. This feature can in principle be used to implement quantum memory devices of new type.
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