Cao García, Francisco JavierDinis Vizcaíno, Luis IgnacioRodríguez Parrondo, Juan Manuel2024-06-062024-06-062004-07-23Cao, F. J., Dinis, L., & Parrondo, J. M. (2004). Feedback control in a collective flashing ratchet. Physical review letters, 93(4), 040603.0031-900710.1103/PhysRevLett.93.040603https://hdl.handle.net/20.500.14352/104727An ensemble of Brownian particles in a feedback controlled flashing ratchet is studied. The ratchet potential is switched on and off depending on the position of the particles, with the aim of maximizing the current. We study in detail a protocol which maximizes the instant velocity of the center of mass of the ensemble at any time. This protocol is optimal for one particle and performs better than any periodic flashing for ensembles of moderate size, but is defeated by a random or periodic switching for large ensembles.engjournal article1079-7114https://doi.org/10.1103/PhysRevLett.93.040603https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.93.040603open access539Partículas2208.07 Física de Partículas