Sökning: "Quantum error correction"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Quantum error correction.

1. 1. Decoding the surface code using graph neural networks

   Master-uppsats, Göteborgs universitet / Institutionen för fysik

   Författare :Moritz Lange; [2023-10-17]
   Nyckelord :;

   Sammanfattning : Quantum error correction is essential to achieve fault-tolerant quantum computation in the presence of noisy qubits. Among the most promising approaches to quantum error correction is the surface code, thanks to a scalable two-dimensional architecture, only nearest-neighbor interactions, and a high error threshold. Decoding the surface code, i.e. LÄS MER

3. 2. Communication and Error Correction via Polarisation of Single Photons and Time Ordering

   Master-uppsats, KTH/Tillämpad fysik

   Författare :Shek Lun Leung; [2023]
   Nyckelord :Quantum Technology; Physics; Photon; Telecommunication; polarization; time ordering; BPPM; PPM; OOK; Simulation; quantum communication; Kvantteknologi; Fysik; Foton; Telekommunikation; polarisering; tidsordning; BPPM; PPM; OOK; Simulering; kvantkommunikation; satellite communication;

   Sammanfattning : This research study aims to investigate the capacity of single photons to carry information through polarization and time ordering and proposes a protocol called Beyond Pulse Position Modulation (BPPM) to improve photon-based communication reliability over longer distances with limited power. Such a protocol may be used in any communication scenario where energy efficiency is important, e. LÄS MER

4. 3. Comparing performance of Grover's algorithm with and without phase flip error correction

   Kandidat-uppsats, KTH/Datavetenskap

   Författare :Tobias Jogården; Mark Bergrahm; [2022]
   Nyckelord :;

   Sammanfattning : Quantum physics tells of our reality being probabilistic at the microscopic level. Expanding on that research, quantum computing was born, which leverages these microscopic entities with probabilistic properties to perform computation. These units of computation in quantum computing are so-called qubits. LÄS MER

5. 4. Quantum Error Correction Using Graph Neural Networks

   Master-uppsats, Göteborgs universitet / Institutionen för fysik

   Författare :Valdemar Bergentall; [2021-06-17]
   Nyckelord :Quantum error correction; surface code; graph neural networks;

   Sammanfattning : A graph neural network (GNN) is constructed and trained with a purpose of using it as a quantum error correction decoder for depolarized noise on the surface code. Since associating syndromes on the surface code with graphs instead of grid-like data seemed promising, a previous decoder based on the Markov Chain Monte Carlo method was used to generate data to create graphs. LÄS MER

7. 5. Density Matrix Simulation of Quantum Error Correction

   Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Arvid Rolander; [2020]
   Nyckelord :quantum error Correction; density matrix simulation; Steane code; Physics and Astronomy;

   Sammanfattning : Quantum error correction will be integral in developing full scale quantum computers, but as of yet beneficial quantum error correction has not been demonstrated experimentally. An important question is therefore what prerequisites need to be met to achieve this. LÄS MER