Atomic squeezed states in a driven Dicke model

Amitabh Joshi, Ravinder Rupchand Puri

Mohamed Ridza Wahiddin, Saad S. M. Hassan, R. Bullough

Time-dependent (numerical) results are presented for super-radiant behaviour in the Dicke model of N a = 2, 3 atoms in a broad band squeezed vacuum. This concerns the fluctuations and the intensity of the fluorescent radiation as well as the atomic population inversion of the system with atoms initially in an atomic coherent state. In the steady state, and in the N a → ∞, we show that the ‘atomic’ Dicke model behaves like a ‘giant quantum oscillator’, in which the number of excited atoms asymptotically approaches the average number of photons in the resonant mode of the squeezed vacuum, just as in the thermally driven case.

Ravinder Rupchand Puri, G. S. Agarwal

Shi‐Biao Zheng, Li-Hua Lin, Yun-Kun Jiang

Amitabh Joshi, Ravinder Rupchand Puri

Z. Ficek, P. D. Drummond

A recent paper [G. M. Palma and P. L. Knight, Phys. Rev. A 39, 1962 (1989)] has stated that the two-atom Dicke model exhibits phase-dependent population decay. In this Comment we show that population decay is invariant with respect to the input phase angle of squeezing in the two-atom Dicke model.