Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 81 for “"Quantum communication"”.
-
Advanced Quantum Communication Systems
… we have improved several resources for quantum communication and quantum computing. Specifically, we have developed improved sources of polarization-entangled photons, a low-loss quantum memory for polarization qubits, and a quantum random number generator. These tools may be applied to …
-
Using hyperentanglement for advanced quantum communication
"The field of quantum information science promises incredible enhancements in computing, metrology, simulation, and communication, but the challenge of creating, manipulating, and measuring the large quantum states has limited current implementations of such techniques. Such limitations affect …
-
Towards optical quantum communication in space
"To build a global quantum communication network, low-transmission, fiber-based communication channels can be supplemented by using a free-space channel between a satellite and a ground station on Earth. To this end, we have developed a system that generates hyperentangled photonic ""ququarts'' and …
-
DEVELOPMENT OF QUANTUM TECHNOLOGIES FOR QUANTUM COMMUNICATION
… Sistema Energetico – RSE S.p.A., investigates quantum communication in critical industrial environments, focusing on the electrical power grid, while also advancing experimental techniques for quantum-state generation and detection in the laboratory. A preliminary survey of Quantum Key …
-
High-dimensional quantum communication over deployed fiber
Quantum key distribution (QKD) exploits the inherent strangeness of quantum mechanics to improve secure communication, enabling two pre-authenticated participants to establish symmetric encryption keys over long distances, without making any assumptions about the computational abilities of an …
-
Long-distance quantum communication with neutral atoms
… performance analyses for a variety of quantum communication/computation systems that have the common feature of employing neutral atoms for storage/processing and photons for qubit transmission. For most of these systems, there is a lack of a precise performance analysis to enable a …
-
Quantum Correlations for Fundamental Tests and Quantum Communication
Quantum correlations arising from measurements on pairs of entangled particles are often referred to as the most non-classical feature of quantum mechanics. As such, they have found a role in many fundamental tests of quantum mechanics and most emerging applications in the field of quantum …
-
High-Dimensional Quantum Information: From Sensing to Underwater Quantum Communication
Quantum information has become an exciting field of research in the last 20 years, as experimental advancements allow us to control, manipulate, and detect states of quantum systems. A subset of this field studies the application of high-dimensional quantum states in communication, computing, and …
-
Quantum cryptography : security analysis of multiuser quantum communication with embedded authentication
Three quantum cryptographic protocols of multiuser quantum networks with embedded authentication, allowing quantum key distribution or quantum direct communication, are discussed in this work. The security of the protocols against different types of attacks is analysed with a focus on various …
-
Spatial mode control and advanced methods for multi-platform quantum communication
Though state-of-the-art quantum computers are currently limited to only a handful of physical qubits, a quantum computer large enough to perform prime factorization of modern cryptographic keys, quantum simulation, and quantum-enhanced searching algorithms will likely become viable within a few …
-
Generation of fiber-coupled, nondegenerate, polarization-entangled photons for quantum communication
… (SPDC) enables many applications of quantum information processing. In this thesis, we use type-0 phase-matched downconversion of pump photons from a 532 nm continuous-wave laser to generate 798 nm signal and 1.6 tim idler photon pairs in periodically-poled, congruent lithium niobate …
-
Drone and vehicle-based quantum communication and towards practical quantum position verification
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
-
Single-photon avalanche photodiodes for quantum communication applications in the near-infrared
… such as light detection and ranging (LIDAR) and quantum key distribution (QKD) systems. Within the work, the effect of the lateral dimensions of the detector’s anode on the experimental characteristics that are used to quantify performance of the SPAD in the gated operating mode, namely the dark …
-
Fundamentals of Quantum Communication Networks: Scalability, Efficiency, and Distributed Quantum Machine Learning
The future quantum Internet (QI) will transform today's communication networks and user experiences by providing unparalleled security levels, superior quantum computational powers, along with enhanced sensing accuracy and data processing capabilities. These features will be enabled through …
-
Single-photon detection of 1.55 [mu]m entangled light and frequency upconversion in periodically poled lithium niobate for quantum communication
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
-
DIRECT PRODUCT, FUNCTION COMPOSITION AND DEVICE-INDEPENDENT CRYPTOGRAPHY
… and composition theorems in query complexity, communication complexity and non-local games, and show applications of these results in device-independent cryptography. The first part of the thesis deals with direct product and composition theorems. Our first result in this part is a composition …
-
Quantum correlations, quantum resource theories and exclusion game
This thesis addresses two topics in quantum information theory. The first topic is quantum correlations and quantum resource theory. The second is quantum communication theory. The first part summarizes an ongoing work about quantum correlations beyond entanglement and quantum resource theories. We …
-
Investigation of machine learning techniques in stabilization of co-propagating polarization encoded photons
Quantum communication protocols and networks have advanced considerably in experimental laboratories; however, their operation is frequently constrained by short time frames and significant environmental noise. These challenges affect both time-coded and polarization-encoded photon systems. …
-
Multiple-user quantum optical communication
… the signal and physical channel to be modeled quantum mechanically. This thesis considers the problems of distributing multi-party quantum entanglement to distant users in a quantum communication system and determining the ability of quantum optical channels to reliably transmit information. A …
Page 1 of 5