Dissipative Parametric Gain and Multiphoton Effects in Quantum GaAs/AlGaAs Superlattice

Adaptive Signal Modulation Evolved by the Inherent Nonlinearity of Phase-Change Quantum-Dot String

“…It has been widely proven experimentally and theoretically, including charge carrier dynamics of microstructure devices, , particle tunneling through double barriers assisted by white noise or a periodic square pulses, , machine fault detection, and dynamic behavior of neurons. , Scientists make their great efforts to use the SR via semiconductor superlattices (SSLs) to simulate neural spike firing, ,, because the particle tunneling through SSLs is also event-driven suitable for signal encoding. ,,, The SSL normally comprises multiple epitaxy layers. The key parameters of energy band configuration is the alternative potential barriers and wells, which determine sequential tunneling electron transport (STET) mechanism, and control excitation behaviors in response to signals. ,− However, the SSL device encounters a significant challenge owing to its limited application in generating random numbers, which is that the excited spike series is usually aperiodic at room temperature. This cannot satisfy the requirement of manipulating signals precisely and maximizing the signal-to-noise ratio ( SNR ).…”