13 papers · 1 filter
Entanglement of minimal dimension and a class of local state discrimination problems
Saronath Halder, Suchetana Goswami
In this work, we construct small sets of bipartite orthogonal pure states that cannot be perfectly distinguished by local operations and classical communication (LOCC). We mention…
Classifying locally distinguishable sets: No activation across bipartitions
Atanu Bhunia, Saronath Halder, Ritabrata Sengupta
A set of orthogonal quantum states is said to be locally indistinguishable if they cannot be perfectly distinguished by local operations and classical communication (LOCC). Otherwi…
Local unambiguous unidentifiability, entanglement generation, and Hilbert space splitting
Saronath Halder, Remigiusz Augusiak
We consider collections of mixed states supported on mutually orthogonal subspaces whose rank add up to the total dimension of the underlying Hilbert space. We then ask whether it…
Unconditionally superposition-robust entangled state in all multiparty quantum systems
Swati Choudhary, Ujjwal Sen, Saronath Halder
We investigate the inseparability of states generated by superposition of a multipartite pure entangled state with a product state. In particular, we identify specific multipartite…
Multi-copy adaptive local discrimination: Strongest possible two-qubit nonlocal bases
Manik Banik, Tamal Guha, Mir Alimuddin +3
Ensembles of composite quantum states can exhibit nonlocal behaviour in the sense that their optimal discrimination may require global operations. Such an ensemble containing N pai…
Unextendible product bases, bound entangled states, and the range criterion
Pratapaditya Bej, Saronath Halder
An unextendible product basis (UPB) is a set of orthogonal product states which span a subspace of a given Hilbert space while the complementary subspace contains no product state.…