The paper introduces the Heat Exchange (HE) ansatz, a variational circuit built from XX+YY interactions with bath qubits, and reports improved MaxCut approximations and sub-1% Heisenberg ground-state errors in small numerical tests.
Boykin, Tal Mor, Vwani Roychowdhury, Farrokh Vatan, and Ruben Vrijen
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Designing Minimalistic Variational Quantum Ansatz Inspired by Algorithmic Cooling
The paper introduces the Heat Exchange (HE) ansatz, a variational circuit built from XX+YY interactions with bath qubits, and reports improved MaxCut approximations and sub-1% Heisenberg ground-state errors in small numerical tests.