Entanglement distribution is a core function of quantum networks essential for operations including teleportation, distributed quantum sensing, and multisite computation. Entanglement throughput and fidelity are two critical performance measures that depend on the quantum transmission along the links and swapping opera...
Guo-Liang Xue, Nageswara S. V. Rao, Don Towsley et al.· IEEE Transactions on Network...· 0 citations
We study Quantum Network Tomography (QNT) for end-to-end link-error characterization under imperfect Bell-state measurements (BSMs), where multiplicative coupling between link and measurement parameters makes identifiability non-trivial. For an n-node star network, we design probes that ensure unique identifiability an...
Athira Kalavampara Raghunadhan, Matheus Guedes de Andrade, Don Towsley et al.· 0 citations
It is proved that for certain utility functions (including the secret key rate of BB84), the method is a fully polynomial time approximation scheme, returning a near-optimal path within a specified tolerance.
Leonardo Bacciottini, S. Maji, Don Towsley et al.· 0 citations
Long-distance entanglement distribution requires error correction protocols to compensate for qubit decoherence in quantum memories and noise introduced during entanglement swapping. We argue that repeater chains with error-correction capabilities should exploit more than one physical platform, combining the complement...
S. Haldar, Saikat Guha, Don Towsley et al.· 0 citations
A tomography framework that infers per-link channel parameters of a QCN from end-to-end measurements alone and extends the approach to star-topology networks through a system of multiplicative equations across end-node pairs, together with a simple classical-signal-direction-switching protocol that resolves the remaini...
Xu-Chuang Wang, Joseph C. Chapman, Aneesh Ramaswamy et al.· 0 citations
As practical quantum networks approach large-scale deployment, the need for efficient user-to-user frequency allocation is increasing, yet current approaches only provide partial solutions to the routing and spectrum allocation problem for an arbitrary quantum network. We address this challenge for repeater-less flex-g...
Zachary Goisman, M. L. Stevens, Maxwell Goisman et al.· 0 citations
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