3 papers
quant-ph2026
Reduced State Stabilizer Rényi Entropy as a Probe of Quantum Phase Transitions in Frustrated J_1-J_2 Spin Models
George Biswas, Santanu Sarkar, Jun-Yi Wu +1
We investigate whether the second-order purity-corrected stabilizer Rényi entropy (SRE) of reduced two-qubit density matrices can serve as a reliable local indicator of quantum pha…
quant-ph2026
Reduced-State Stabilizer Rényi Entropy as a Probe of Quantum Criticality in the Transverse ANNNI Model and the Quantum Compass Model
Santanu Sarkar, George Biswas, Jun-Yi Wu +1
We investigate the effectiveness of the stabilizer Rényi entropy (SRE), a quantifier associated with non-stabilizer resources (quantum magic), as an indicator of quantum phase tra…
quant-ph2025
Magnetic Field Detection Using a Two-Qubit System Under Noisy Heisenberg Interaction
George Biswas, Sayan Sengupta, Anindya Biswas
We propose a method to design a magnetic field detector using a noisy two-qubit system. The system evolves under a noisy Heisenberg interaction Hamiltonian, and we investigate its…