[1] P.W.Shor. In Proceeding of the 35th Annual Symposium on the Theory of Computer Science, edited S. Goldwasser (IEEE Computer Society Press, Los Alamitos, California, 1994), p. 124.
[2] A. Ekert and R. Jozsa. Rev. Mod. Phys. 68, 733 (1996).
[3] See recent issue sof PRL and PRA and the e-print article quant-ph.
[4] W. G. Unruh. Phys. Rev. A 51, 992 (1995).
[5] M. B. Plenio and P.L.Knight. Phys. Rev. A 53, 2986 (1996).
[6] J. I. Cirac and P. Zoller. Phys. Rev. Lett. 74,4091 (1995).
[7] C. Monroe et al. Phys. Rev. Lett. 75, 4714 (1995).
[8] N. A. Gershenfeld and I. L. Chuang. Science 275, 350 (1997).
[9] D. Cory, A. Fahmy and T. Havel. Proc. Nat. Acad. Sci. USA 94, 1634 (1997).
[10] N. L. Balazs and A. Voros. Ann. Phys. 190, 1 (1989).
[11] M. Saraceno. Ann. Phys. 199, 37 (1990).
[12] M.Saraceno and A. Voros. Chaos 2, 99 (1992); Physica D 79, 206 (1994).
[13] R.Schack and C.M. Caves. Phys. Rev. Lett. 71, 525 (1993); Phys. Rev. E 53, 3257 (1996).
[14] A. Lakshminarayan and N. L. Balazs. Ann. Phys. 226, 350 (1993).
[15] A. Lakshminarayan. Ann. Phys. 239, 272 (1995).
[16] M. G.E. da Luz and A.M.Ozorio de Almedia. Nonlinearity 8, 43 (1995).
[17] D. Deutch. Proc. R. Soc. Lond. A 400, 97 (1985).
[18] A. Barenco et al. Phys. Rev. A 52, 3457 (1995).
[19] D. P. DiVincenzo. Phys. Rev. A 51, 1015 (1995).
[20] C.M.Caves. In Physical Origins of Times Asymmetry, edited by J.J.Halliwell, J. Perez-Mercader and W.H.Zurek (Cambrifge University Press, Cambridge, England, 1993), p. 43.
[21] R.Schack and C.M. Caves. Phys. Rev. Lett. 69, 3413 (1992); Phys. Rev. E 53, 3387 (1996).
[22] R.Schack, G.M.D’Ariano and C.M.Caves. Phys. Rev. E 50, 972 (1994).
[23] V.I.Arnold and A. Avez. Ergodic Problems of Classical Mechanics (Benjamin, New York, 1968).
[24] H. Weyl. The theory of Group and Quantum Mechanics (Dover, New York, 1950).