Improved lower bound for the two-way-assisted quantum capacity of the bosonic thermal-loss channel

arXiv:2609.27792 · quant-ph, math-ph, math.MP, physics.comp-ph, physics.optics · Submitted 2026-08-17 · Read on arXiv

quant-ph, math-ph, math.MP, physics.comp-ph, physics.optics

Submitted: 2026-08-17

Updated: 2026-08-17

Comments: REVTeX. 7 pages. 4 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Entanglement — 22× in this paper · explained in 4 episodes
• Distillation — 17× in this paper · explained in 2 episodes
• Entanglement Distillation — 7× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Regularization — 1× in this paper · explained in 3 episodes

Sources

• Lower Bounding the Secret Key Capacity of Bosonic Gaussian Channels via Optimal Gaussian Measurements

Related papers

• Reconquering Bell sampling on qudits: stabilizer learning and testing, quantum pseudorandomness bounds, and more
• Encrypted clones can leak: Classification of informative subsets in Quantum Encrypted Cloning
• Polynomial-time classical and quantum simulation of quantum impurity models
• Incoherent Imaging with Spatially Structured Quantum Probes
• A quasiparticle-protected superconducting qubit
• Theory of quantum-enhanced interferometry with general Markovian light sources