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quant-ph2026
Quantum cryptography compatible with noisy intermediate-scale quantum devices based on Parrondo dynamics in discrete-time quantum walks
Aditi Rath, Dinesh Kumar Panda, Colin Benjamin
Compatibility with noisy intermediate-scale quantum (NISQ) devices is crucial for the realistic implementation of quantum cryptographic protocols. We investigate a cryptographic sc…
quant-ph2026★ 1 cited
Quantum walks reveal topological flat bands, robust edge states and topological phase transitions in cyclic graphs
Dinesh Kumar Panda, Colin Benjamin
Topological phases, edge states, and flat bands in synthetic quantum systems are a key resource for topological quantum computing and noise-resilient information processing. We int…
cond-mat.str-el2026
Fractional Topological Phases, Flat Bands, and Robust Edge States on Finite Cyclic Graphs via Single-Coin Split-Step Quantum Walks
Dinesh Kumar Panda, Colin Benjamin
We report the first realization of a fractional topological phase in a fully unitary, noninteracting discrete-time quantum walk implemented on finite cyclic graphs. Using a single-…