The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Nov. 06, 2017
Fundació Institut DE Ciències Fotòniques, Barcelona, ES;
Institució Catalana DE Recerca I Estudis Avançats, Barcelona, ES;
Valerio Pruneri, Barcelona, ES;
Carlos Abelian Sanchez, Barcelona, ES;
Waldimar Amaya, Barcelona, ES;
Morgan Mitchell, Barcelona, ES;
Fundado Institut de Ciències Fotóniques &, Barcelona, ES;
Institució Catalana de Recerca I Estudis Avançais, Barcelona, ES;
Abstract
A method for physical random number generation includes the steps of: modulating the gain of a vertical-cavity surface-emitting laser periodically from the lower threshold to the upper threshold and back; maintaining the gain per round trip positive for a longer period than the round trip time of the cavity; maintaining the net gain per round trip negative for a longer period than the round trip time of the cavity, in order to create optical pulses of random amplitude; detecting the optical pulses; converting the optical pulses into electrical analog pulses; and digitising the electrical analog pulses into random numbers.