2 papers
quant-ph2026
Optimal Quantum State Testing Even with Limited Entanglement
Chirag Wadhwa, Sitan Chen
In this work, we consider the fundamental task of quantum state certification: given copies of an unknown quantum state , test whether it matches some target state or is $…
quant-ph2025
Information-Computation Gaps in Quantum Learning via Low-Degree Likelihood
Sitan Chen, Weiyuan Gong, Jonas Haferkamp +1
In a variety of physically relevant settings for learning from quantum data, designing protocols that can computationally efficiently extract information remains largely an art, an…