In the realm of quantum cryptography, the BB84 protocol stands as a foundational milestone for secure communication. Conceived by Charles Bennett and Gilles Brassard in 1984, BB84 enables two parties, commonly referred to as Alice and Bob, to establish a shared secret key over a quantum channel, with the remarkable ability to detect any eavesdropping attempt by a third party, Eve.
This session took place within the framework of the 1st GECOS Training School, an educational event that brought together speakers of recognised academic and professional standing at the Faculty of Economics and Business of the University of Salamanca (USAL).
In the last article (Quantum Perlin Noise) we explored how quantum algo rithms, specifically Grover-Rudolph algorithm and Quantum Fourier Transform (QFT) interpolation, can generate smooth noise distributions in one dimension.
Last Thursday, July 31, 2025, QETEL organized a lecture on the work “Optimising investment portfolios using quantum computing” by Professor Antonio Falcó Montesinos, director of the Department of Mathematics, Physics, and Technological Sciences at the CEU Cardenal Herrera University in Valencia.
Video games have come a long way since their inception, evolving from simple pixel-based worlds into dynamic environments. One of the most intriguing aspects of modern video games is the ability to create worlds that seem alive and continuously evolving. The key to achieving this is procedural generation. But what makes procedural generation so powerful, and how can we push its boundaries even further?
Recently, ‘Quantum technologies: how to bet and get it right from Spain and the EU’ was published, a paper by Real Instituto Elcano and Tecnalia which gives the keys for Europe, and specifically Spain, to adopt the quantum revolution. A transformation with a great future that, in their words, can have a more transcendental impact than artificial intelligence.
The first algorithm that is typically associated with quantum computing is the Shor algorithm [1], which is seen as a significant potential threat to the current cybersecurity paradigm.
In previous posts, we have discussed the optimisation of portfolios using quantum annealing. Now, we will examine an alternative approach within a gate-based quantum computer, providing a view to understanding how QAOA works and a practical use case for the top ten enterprises in IBEX 35.
In this blog we show the results of a method that consists of introducing the possibility that in an iterative game each player can adjust the parameters of their quantum plays iteratively to optimise their own payoff through a cost function using, for example, gradient descent techniques.