5 papers
Efficient and Low-Backaction Quantum Measurement Using a Chip-Scale Detector
Eric I. Rosenthal, Christian M. F. Schneider, Maxime Malnou +13
Superconducting qubits are a leading platform for scalable quantum computing and quantum error correction. One feature of this platform is the ability to perform projective measure…
Playing Games with Multiple Access Channels
Felix Leditzky, Mohammad A. Alhejji, Joshua Levin +1
Communication networks have multiple users, each sending and receiving messages. A multiple access channel (MAC) models multiple senders transmitting to a single receiver, such as…
Asymptotic performance of port-based teleportation
Matthias Christandl, Felix Leditzky, Christian Majenz +3
Quantum teleportation is one of the fundamental building blocks of quantum Shannon theory. While ordinary teleportation is simple and efficient, port-based teleportation (PBT) enab…
Quantum Codes from Neural Networks
Johannes Bausch, Felix Leditzky
We examine the usefulness of applying neural networks as a variational state ansatz for many-body quantum systems in the context of quantum information-processing tasks. In the neu…
Dephrasure channel and superadditivity of coherent information
Felix Leditzky, Debbie Leung, Graeme Smith
The quantum capacity of a quantum channel captures its capability for noiseless quantum communication. It lies at the heart of quantum information theory. Unfortunately, our poor u…