Adaptive VQE exhibits exponential growth in iterations and circuit depth with system size, accurately predicted by classical Rényi entropy on molecules with 4-10 orbitals.
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By augmenting quantum circuit ansatze with optimized swap networks, the work achieves better performance in ground-state energy calculations using fewer resources on devices with arbitrary qubit connectivity.
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Exponential Scaling Barriers for Variational Quantum Eigensolvers
Adaptive VQE exhibits exponential growth in iterations and circuit depth with system size, accurately predicted by classical Rényi entropy on molecules with 4-10 orbitals.
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Swap Network Augmented Ans\"atze on Arbitrary Connectivity
By augmenting quantum circuit ansatze with optimized swap networks, the work achieves better performance in ground-state energy calculations using fewer resources on devices with arbitrary qubit connectivity.