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The advent of fully variational quantum eigensolvers using a hybrid multiresolution approach
Fabian Langkabel, Stefan Knecht, Jakob S. Kottmann
In electronic structure theory, variational methods offer a valuable paradigm for approximating electronic ground states. However, for historical reasons, this principle is mostly…
Hyperfine Coupling Constants on Quantum Computers: Performance, Errors, and Future Prospects
Phillip W. K. Jensen, Gustav Stausbøll Hedemark, Karl Michael Ziems +6
We present the first implementation and computation of electron spin resonance isotropic hyperfine coupling constants (HFCs) on quantum hardware. As illustrative test cases, we com…
Approximate quantum circuit compilation for proton-transfer kinetics on quantum processors
Arseny Kovyrshin, Dilhan Manawadu, Edoardo Altamura +15
Proton transfer reactions are fundamental to many chemical and biological systems, where quantum effects such as tunneling, delocalization, and zero-point motion play key kinetic c…
Quantum-centric strong and dynamical electron correlation: A resource-efficient second-order -electron valence perturbation theory formulation for near-term quantum devices
Aaron Fitzpatrick, N. Walter Talarico, Roberto Di Remigio Eikås +1
We present a measurement-cost efficient implementation of Strongly-Contracted -Electron Valence Perturbation Theory (SC-NEVPT2) for use on near-term quantum devices. At the hear…
Electric Field Gradient Calculations for Ice VIII and IX using Polarizable Embedding: A Comparative Study on Classical Computers and Quantum Simulators
Dániel Nagy, Peter Reinholdt, Phillip W. K. Jensen +7
We test the performance of the Polarizable Embedding Variational Quantum Eigensolver Self-Consistent-Field (PE-VQE-SCF) model for computing electric field gradients with comparison…
Towards Efficient Quantum Computing for Quantum Chemistry: Reducing Circuit Complexity with Transcorrelated and Adaptive Ansatz Techniques
Erika Magnusson, Aaron Fitzpatrick, Stefan Knecht +2
The near-term utility of quantum computers is hindered by hardware constraints in the form of noise. One path to achieving noise resilience in hybrid quantum algorithms is to decre…