Browsing by Subject "Comunicació quàntica"
Now showing items 1-10 of 10
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Comparison of beam wander correction by quadrant and ideal detectors for aerial quantum communication links
(Universitat Politècnica de Catalunya, 2015-10-15)
Master thesis
Open AccessWe report an analysis of beam wander correction by both a quadrant and an ideal detector in a close loop configuration. The analysis is performed with the aim of finding the optimum detector for beam tracking of free space ... -
Exciton engineering with 2D heterostructures.
(Universitat Politècnica de Catalunya, 2020-09-08)
Master thesis
Open AccessQuantum emitters have an important role in many quantum technologies as quantum sensing and metrology, quantum computation or quantum information. They must be isolated from their environment, but paradoxically some external ... -
Integrated photonic transmitters for secure space quantum communication
(Universitat Politècnica de Catalunya, 2013-04-15)
Doctoral thesis
Open AccessAn important issue in today's information society is the security of data transmission against potential intruders, which always put at risk the confidentiality. Current methods to increase security require that the two ... -
Modelling short-range quantum teleportation for scalable multi-core quantum computing architectures
(Association for Computing Machinery (ACM), 2021)
Conference report
Open AccessMulti-core quantum computing has been identified as a solution to the scalability problem of quantum computing. However, interconnecting quantum chips is not trivial, as quantum communications have their share of quantum ... -
Quantum annealing: near future applications
(Universitat Politècnica de Catalunya, 2020-11)
Bachelor thesis
Open AccessIntroduction to quantum computing with a description of the current state-of-the-art. The practical part consists in a qubit simulation with Rabi cycles under continuous measurements. -
Quantum nonlocality certification from Bell inequalities in three-level many-body systems
(Universitat Politècnica de Catalunya, 2020-09-09)
Master thesis
Open AccessIn this work, we aim at studying the applicability of the recently discovered multipartite permutationally invariant three-outcome Bell inequality involving at most second order correlation functions (3-outcome PIBI) ... -
Quantum Resistant Authenticated Key Exchange for OPC UA using Hybrid X.509 Certificates
(Universitat Politècnica de Catalunya, 2020-04)
Master thesis
24 months embargoWhile the current progress in quantum computing opens new opportunities in a wide range of scientific fields, it poses a serious threat to today?s asymmetric cryptography. New quantum resistant primitives are already ... -
Single-serving quantum broadcast channel with common, individualized, and confidential messages
(2020-12)
Article
Open AccessThe two-receiver broadcast channel with primary and third party receivers is studied. The sender wishes to reliably communicate a common (or public) message to both receivers as well as individualized and confidential ... -
Will quantum computers scale without inter-chip comms? A structured design exploration to the monolithic vs distributed architectures quest
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Open AccessBeing a very promising technology, with impressive advances in the recent years, it is still unclear how quantum computing will scale to satisfy the requirements of its most powerful applications. Although continued progress ... -
Work distributions on quantum fields
(Universitat Politècnica de Catalunya, 2019-05-31)
Bachelor thesis
Open Access
Covenantee: Institute for Quantum ComputingWe study the work cost of processes in quantum fields without the need of projective measurements, which are always ill-defined in quantum field theory. Inspired by interferometry schemes, we propose a work distribution ...
