Quantum regime of resonant-tunnelling diode oscillations

Resonant-tunneling diode (RTD) is one of the first quantum devices. In contrast to devices settled on quantum dots and quantum threads, which works only at low temperatures, RTD can works in a wide range of temperatures from liquid-helium temperature till 100C. Also, RTD has one more feature, which makes this device attractive for use in integrated circuits-high operating frequency and, as a consequence, fast response. In this work we investigated free-running lasing of RTD in quantum regime.