Author

Aritra Das

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Preprint Oct 2026

Super-Exponential Advantage of Squeezed Light in Phase Estimation under Discrete Phase Randomisation

A paradigmatic task in quantum metrology is that of phase estimation. For this task it is commonly believed, under reasonable assumptions about prior information, that a quadratic advantage in sensitivity is the maximum possible advantage offered by the use of quantum resources. In this work, we consider a channel that...

Lorcán O. Conlon, V. Vijendran, Aritra Das et al. · 0 citations

Preprint Sep 2026

Near-Optimal Bell Nonlocality with GKP and Entangled Cat States

Gottesman-Kitaev-Preskill (GKP) states are widely studied as a bosonic encoding for fault-tolerant quantum computing because small displacement errors can be identified and corrected through syndrome measurements. However, fault-tolerant operation requires substantially greater GKP squeezing than is currently available...

Özlem Erkılıç, Aritra Das, S. Swain et al. · 0 citations

Preprint Sep 2026

Quantum advantage in learning single mode bosonic channels

The results show that a single bosonic mode can exhibit exponential quantum learning advantages without entanglement or an increase in system size, identifying accessible Fourier bandwidth as a fundamentally distinct resource for quantum-enhanced learning.

A. A. Baiju, Aritra Das, Ozlem Erkilic et al. · 0 citations