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quant-ph2026
Quantum resonance based encryption protocol with quantum kicked top
Sreeram PG, M. S. Santhanam
We propose a genuine quantum protocol for protecting user's data, either in a shared quantum computer or in a quantum communication system, that is not accessible even to the servi…
quant-ph2026
Probing Chaos and Criticality with Observational Entropy and Finite-Resolution Measurements
J. Bharathi Kannan, Sreeram PG, M. S. Santhanam
Coarse-grained measurements offer a scalable alternative to full state tomography for characterizing complex quantum dynamics. We show that observational entropy (OE), an informati…
quant-ph2024
Information acquisition, scrambling, and sensitivity to errors in quantum chaos
Sreeram PG, Abinash Sahu, Naga Dileep Varikuti +3
Signatures of chaos can be understood by studying quantum systems whose classical counterpart is chaotic. However, the concepts of integrability, non-integrability and chaos extend…