However when one of the fields isin the vacuum state and the other in number state and the spectrum willgenerally show non-symmetric six peaks structure,but when n_2=5,it becomes non-symmetric five peaks structure.
The time evolution of entanglement and disentanglement between a Λ-type three-level atom and a single-mode field initially in the number state in an ideal cavity are investigated by considering von Neumann entropy of the optical field.
Symmetrical two peak structure appears in the spectrum for each mode when the initial fields are both in the pure number states or both in the coherent states. The split of the two peaks is proportional to the field intensity of the other mode.
Base on the singlephoton transition JC model,The transformation characteristies of light field statistic distribution in cavity which is after a large number of excited atoms passing through the cavity in ones are studied. The forming conditions of the pure photon number states and the general rule of extruding effects of the light field are obtained.
the cavity field spectrum expression of the system with the fields in superposition state is given out. Some numerical results for the fields in coherent states, and squeezed vacuum st ates are presented. The effects of relative coupling constant R=g_2/g_1 on the spe ctrum structure are discussed.
The internal state of the ion is a target qubit. The internal ground state |g> and excited state |e> can be expressed by |0> and |1> respectively. The phonon state |0> and |1> are used as control bits.
For coherent state field and number state field there is no CR to occur, which means that CR is due to both wave and particle aspects of the field.
A single two-level atom can be used to prepare an arbitrary photon number state (Fock state) in a high Q cavity .
Generalized two-mode harmonic oscillator model: squeezed number state solutions and nonadiabatic Berry's phase
Our analyses indicate that the time-dependent coherent state is equivalent to the well-known squeezed state, while the time-dependent number state is equivalent to the displaced and squeezed number state.
By using the accurate definition of Dirac operators the wave function in both coherent state and number state (Schr?dinger picture) are obtained.
This paper defines a new phase operator for the light field by decomposing the two quadrature phases of the field. The expacted value and fluctuation in the nonclassical states of the light field (number state, coherent state, squeezed state, etc.) are discussed and shown to reduce to the expected classical values in the classical limit. The characteristics of the phase in the squeezed state are revealed in this paper.
Absolute measurements of emission cross sections have been performed for the lines from Arll excited states in Ar~(2+)+Li and Ar~(2+)+Na collision. The energy of incedent ions ranged from 40 keV to 300 keV. The dependence of the emission cross sections on the energy defect AE is discussed. We find that the processes with intermediate △E( > 0) have larger cross sections. We also find that the excited states correlated to the observed lines belong to the high J quantum numbers in an electron configuration.
This paper studies the cavity field generated by injecting atoms, one at a time, initially in the excited state and operating at a one-step two-photon transition. The interesting features of photon statistical distribution in the cavity are found and discussed, the conditions of generating photon number state are shown.