6 papers
Geometry versus excitation sector in the decoherence of asymmetric -qubit states
Sougata Bhattacharyya, Sovik Roy, Fatih Ozaydin
We investigate how network geometry and excitation sector separately control pairwise entanglement decay in asymmetric multipartite states. To disentangle these effects, we int…
Knot your average qutrit: Measurement-induced entanglement splitting and the cabling dictionary for GHZ and W States
Sougata Bhattacharyya, Sovik Roy
Multipartite entanglement is conventionally classified by state families viz. family of GHZ and W class of states, with each family expected to behave differently under measurement…
Super-Link Fragility in Asymmetric W-Class States under Quantum Noise
Sougata Bhattacharyya, Fatih Ozaydin, Sovik Roy
The asymmetric three-qubit W-class state defines an isosceles entanglement-network geometry, (a) two vertex-base (VB) links form stronger bipartite conne…
Phase-sensitive framed-ribbon representation of single-qubit Pauli measurements in linear cluster states
Sougata Bhattacharyya, Sovik Roy
We provide a geometric classification of single-qubit projective measurements on one-dimensional linear cluster states within a topological framework. Establishing an explicit corr…
Entanglement, Coherence, and Recursive Linking in Dicke states : A Topological Perspective
Sougata Bhattacharyya, Sovik Roy
This work investigates the topological structure of multipartite entanglement in symmetric Dicke states . By viewing qubits as topological loops, we establish a…
Symmetric and asymmetric tripartite states under the lens of entanglement splitting and topological linking
Sougata Bhattacharyya, Sovik Roy
This work establishes a direct operational connection between the entanglement structures of specific three-qubit states (i.e. multipartite entanglement) and their corresponding to…