Sökning: "quantum key distribution"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden quantum key distribution.

  1. 1. Development of a QRNG front-end for shot noise measurement : analysis of quantum shot noise originating from photodiodes

    Master-uppsats, Linköpings universitet/Informationskodning

    Författare :Martin Clason; [2023]
    Nyckelord :shot noise; quantum random number generator; photodiode; transimpedance amplifier; skottbrus; kvantslumptalsgenerator; fotodiod; transimpedansförstärkare;

    Sammanfattning : As one of the more mature quantum technologies, quantum random number generators (QRNGs) fill an important role in producing secure and private keys for use in cryptogra- phy in e.g. quantum key distribution (QKD) systems. Many available QRNGs are expen- sive and optical QRNGs often require complex optical setups. LÄS MER

  3. 2. Cost and efficiency comparison of Quantum Key Distribution schemes

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Erik Lidbjörk; Rasmus Söderström Nylander; [2023]
    Nyckelord :;

    Sammanfattning : The development of quantum computing exposes critical vulnerabilities in classical encryption systems. However, quantum computing also enables new methods of secure communication. Quantum key distribution (QKD) is one class of such methods. LÄS MER

  4. 3. Developing an educational tool for simulations of quantum key distribution systems

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Erik Åkerberg; Erik Marton Åsgrim; [2023]
    Nyckelord :;

    Sammanfattning : Quantum key distribution (QKD) is the idea of using quantum systems to securely communicate a shared encryption key between two parties. In contrast to classical methods of encryption, QKD utilizes fundamental quantum properties such as superposition and entanglement to encode information in a way that guarantees security. LÄS MER

  5. 4. Characterization and Stabilization of Transverse Spatial Modes of Light in Few-Mode Optical Fibers

    Master-uppsats, Linköpings universitet/Informationskodning

    Författare :Oscar Pihl; [2023]
    Nyckelord :spatial modes; Space division multiplexing; SDM; superpositions; LP-modes; few-mode fibers; quantum communication; quantum optics; adaptive optics; stochastic parallel gradient descent; SPGD; mode control; QKD; polarization controller; paddle controller; QRNG; quantum random number generator; spatial modes; perturbation effects;

    Sammanfattning : With the growing need for secure and high-capacity communications, innovative solutions are needed to meet the demands of tomorrow. One such innovation is to make use of the still unutilized spatial dimension of light in communications, which has promising applications in both enabling higher data traffic as well as the security protocols of the future in quantum communications. LÄS MER

  7. 5. Sharing Quantum Resources Across a Metropolitan Network

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Martin Carlnäs; [2022]
    Nyckelord :QKD; Entanglement; SNSPD; Quantum Dot; Exciton; Biexciton; QKD; Kvantsammanflätning; SNSPD; Kvant Prick; Exciton; Biexciton;

    Sammanfattning : Kvantsammanflätning har varit ett populärt ämne bland fysiker i snart 100 år då det tydligt belyser hur annorlunda kvantmekanikens värld är jämfört med den klassiska verklighet vi lever i. Med tiden har kvantsammanflätning blivit mer och mer välförstått och teknologier ämnade att utnyttja det har de senaste årtionden kommit allt närmare till industriell använding. LÄS MER