Fluctuation in superradiance

Kensuke S. Ikeda, S. Sawada

Masuo Suzuki

Ioannis E. Antoniou, Vl. V. Kocharovsky, Vitaly V. Kocharovsky +2 more

Takeshi Baba, Kensuke S. Ikeda

Macroscopic fluctuation of superradiance most sensitively appears as the fluctuation of the polarized photon number. This fluctuation is not much affected by unexpected variation of the exciting pulse area. In the superradiance limit the relative fiuctuation of the polarized photon number is equal to \(\sqrt{1/3}\), and it decreases rapidly as the atomic number density is reduced below a threshold density. Such a characteristic change is attributed to a transition from the superradiant emission to the amplified spontaneous emission.

L. I. Men’shikov

Maria Adamuti‐Trache

Some critical properties for static and dynamic equilibrium superradiant models are discussed, within a Gaussian fluctuation theory. The temperature critical region and the λ-critical region are calculated and the phase diagram of the superradiant phase transition is obtained.