H. S. Karthik

Geometric picture for SLOCC classification of pure permutation symmetric three-qubit states

2022 · arXiv (Cornell University)

The quantum steering ellipsoid inscribed inside the Bloch sphere offers an elegant geometric visualization of two-qubit states shared between Alice and Bob. The set of Bloch vectors of Bob's qubit, steered by Alice via all …

Extreme Violations of Leggett-Garg Inequalities for a System Evolving under Superposition of Unitaries

2025 · Physical Review Letters

The violation of Leggett-Garg inequality (LGI) indicates general temporal correlations in quantum systems that cannot be explained classically. Under unitary dynamics and projective measurements, the violation of LGI is restricted up to the temporal Tsirelson's …