CENTER FOR APPLIED MATHEMATICS AND THEORETICAL PHYSICS
UNIVERZA V MARIBORU UNIVERSITY OF MARIBOR
KREKOVA 2 SI-2000 MARIBOR SLOVENIA
Phone +(386) (2) 2355 350 and 2355 351 $\bullet$ Fax +(386) (2) 2355 360
Robnik@uni-mb.si $\bullet$ www.camtp.uni-mb.si
PROF.DR. MARKO ROBNIK, DIRECTOR

Seminarsko predavanje
Centra za uporabno matematiko in teoreticno fiziko

Fidelity of Quantum Chaos

Doc.Dr. Tomaz Prosen
Oddelek za fiziko, Fakulteta za matematiko in fiziko
Univerza v Ljubljani

Abstract: Recently, we have witnessed a strong interest in the stability of quantum motion against small variations of the Hamiltonian characterized by fidelity. We will show the behaviour of fidelity decay in different regimes characterized with several time-scales, and explain how the fidelity can be computed in terms of time-correlation function of the generator of perturbation. Interesting application of our ideas for the enhancement of the stability of quantum computation will be discussed in the end.
References:
Prosen T and Znidaric M 2002 J. Phys. A: Math. Gen. 35 1455
Prosen T and Znidaric M 2001 J. Phys. A: Math. Gen. 34 L681
Prosen T 2002 Phys. Rev. E 65 036208
Prosen T and Seligman T H 2002 J. Phys. A: Math. Gen. 35 4707

Seminarsko predavanje bo v cetrtek, 6. februarja 2003 ob 15:15 uri v seminarski sobi CAMTP na Krekovi 2, pritlicje desno. Vljudno vabljeni vsi zainteresirani, tudi študentje.

Prof.Dr. Marko Robnik
-- Direktor CAMTP --