We study the generation of femtosecond superradiance pulses due to collective recombination of electron-hole (eh) pairs in quantum wells placed in a strong magnetic field oriented perpendicular to the growth plane. Such a superradiant laser can work under the conditions of continuous pumping and at room temperature due to the complete quantization of particle motion, maximum possible spectral density of states, high volume density of cyclotron quantum dots and partial suppression of the intraband scattering. It is shown that two-colour superradiant generation is possible at frequencies resonant to frequencies of the neighbouring interband transitions defined by the electron and hole Landau levels.
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