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quant-ph2025
Graph theoretic quantum contextuality and unextendible Product Bases
Gurvir Singh, Arvind
Unextendible product bases(UPBs) are central to the study of local distinguishability of orthogonal product states. While their connection to quantum nonlocality via Bell inequalit…
quant-ph2025
Noisy dynamics of Gaussian entanglement: a transient bound entangled phase before separability
Gurvir Singh, Saptarshi Roy, Arvind
We discover a new class of Gaussian bound entangled states of four-mode continuous-variable systems. These states appear as a transient phase when certain NPT-entangled Gaussian st…