Abstract
We propose a theory that makes it possible to examine both laser and micromaser two-photon light generation. The theory is based on the Lamb-Scully model, in which two-level atoms have initial coherence. Such an initial state allows for light generation involving atoms without inversion or even atoms with negative population inversion in the transition. We analyze the conditions needed for the emergence of squeezed states of the light field. We also show that the photon statistics in lasing is always classical but that there appears a state of the field squeezed in the phase with maximum photodetection shot-noise suppression. For a micromaser we find a regime where sub-Poisson light with a shot-noise suppression level of 60% is realized in an inversionless transition. In another regime, a squeezed state that produces 75% suppression of noise can be generated.
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Zh. Éksp. Teor. Fiz. 115, 1605–1618 (May 1999)
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Gorbachev, V.N., Trubilko, A.I. A theory of two-photon light generation involving inversionless two-level atoms. J. Exp. Theor. Phys. 88, 882–888 (1999). https://doi.org/10.1134/1.558867
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DOI: https://doi.org/10.1134/1.558867