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quant-ph2026
Designs without disorder: unitary -designs from a single-site bulk defect
Samudra Sur, Pratik Nandy
We show that an local defect is sufficient to generate approximate unitary -designs from an otherwise integrable quantum many-body system. Using a two-Pauli-kick (2PK) pr…
quant-ph2026
Control of Multipartite Entanglement through Anisotropy against Thermal Noise
Samudra Sur, Saikat Sur
Preserving multipartite entanglement in open many-body quantum systems is fundamentally limited by unavoidable environmental noise. We study the open-system dynamics of multipartit…