RT Journal Article T1 Optical quantum random number generators: a comparative study A1 Guillán Lorenzo, Omar A1 Troncoso Costas, Marcos A1 Álvarez Outerelo, David A1 Díaz Otero, Francisco Javier A1 Garcia Escartin, Juan Carlos K1 3307 Tecnología Electrónica AB Quantum random number generators give the opportunity to, in theory, obtain completely unpredictable numbers only perturbed by the noise in the measurement. The obtained data can be digitalized and processed so that it gives as a result a uniform sequence of binary random numbers without any relation with the classical noise in the system. In this work we analyze the performance of optical QRNGs with three different arrangements: a homodyne detector measuring vacuum fluctuations, a homodyne detector measuring amplified spontaneous emission from an EDFA and a spontaneous emission phase noise-based generator. The raw data from the experiments is processed using a Toeplitz extractor, giving as a result sequences of binary numbers capable of passing the NIST Statistical Test Suite. PB Optical and Quantum Electronics SN 03068919 YR 2023 FD 2023-01-04 LK http://hdl.handle.net/11093/4637 UL http://hdl.handle.net/11093/4637 LA eng NO Optical and Quantum Electronics, 55, 185 (2023) NO Universidade de Vigo/CISUG DS Investigo RD 04-oct-2023