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quant-ph2026
Modular-Annihilator Parent Hamiltonians for Purified Gibbs States: Spectral Design and Controlled Approximation
Changhao Yi, Jun Takahashi, Cunlu Zhou
Purified Gibbs states provide a bridge between finite-temperature physics, dissipative dynamics, and ground-state methods. In this work, we study the exact finite sum-of-squares (S…
quant-ph2026
Certifying unknown-basis pure-state entanglement dimensionality with few measurement settings
Changhao Yi
We introduce a basis-independent algorithm that only uses single-copy measurements to certify the Schmidt number of -qubit bipartite pure states. Assuming the local system dime…