https://doi.org/10.1140/epjd/e20020043
Series solution to the laser-ion interaction in a Raman-type configuration
1
Max-Planck Institute for the Physics of Complex Systems,
Nthnitzer Street 38, 01187 Dresden, Germany
2
Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
Wuhan Institute of Physics and Mathematics, Academia Sinica,
Wuhan 430071, P.R. China
Corresponding author: a feng@isiosf.isi.it
Received:
12
March
2001
Revised:
16
October
2001
Published online: 15 March 2002
The Raman interaction of a ultracold ion trapped with two travelling wave lasers is studied analytically with series solutions, in the absence of the rotating wave approximation (RWA) and without restrictions of both the Lamb-Dicke limit and the weak excitation regime. The comparison is made between our solutions and those obtained under the RWA in order to demonstrate the validity region of the RWA. As a practical example, the preparation of Schrödinger-cat states is proposed beyond the weak excitation regime, using our calculations.
PACS: 42.50.Dv – Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements / 32.60.+i – Zeeman and Stark effects
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002