3 papers
quant-ph2026
Magic Secret Sharing: Threshold Control of Quantum Computational Power via GHZ Entanglement
Soumyojyoti Dutta, Tushar
We introduce Magic Secret Sharing (MSS), a quantum cryptographic primitive in which the secret is the computational capability of a quantum state rather than its classical descript…
quant-ph2026
Single-Round Graph-State Distribution from Bell Pairs: Exact Fidelity under Resource-Qubit Noise
Soumyojyoti Dutta
I present a protocol that converts |E| elementary two-qubit resource states, one per edge of a target graph G=(V,E), into the distributed graph state |G> using only operations loca…
quant-ph2026
A Phase-Space Geometric Measure of Magic in Qubit Systems
Soumyojyoti Dutta, Tushar
Magic -- the resource enabling quantum computational advantage beyond stabilizer circuits -- has a clean phase-space characterization in odd prime dimensions that qubits notoriousl…