Hot-Start Optimization for Variational Quantum Eigensolver
arXiv:2104.15001
Abstract
The Variational Quantum Eigensolver (VQE) is one the most perspective algorithms for simulation of quantum many body physics that have recently attached a lot of attention and believed would be practical for implementation on the near term quantum devices. However, its feasibility and accuracy critically depend on the ansatz structure, which can be defined in different ways and appropriate choosing the structure presents a bottleneck of the protocol. In our work we present the optimization approach allowing shallow circuit solution. The major achievement of our Hot-Start method is the requiring gates number restriction by several times. In result it increases the fidelity of the final results what is important for the current noise quantum devices implementation. We suggest Hot-Start optimization to be a good new methods beginning for the modern quantum computational devices functionality development.
arXiv commentArticle is about new methods to restrict number of quantum gates for VQE implementation
References in corpus (8)
- Hardware-efficient Variational Quantum Eigensolver for Small Molecules and Quantum Magnets
- An adaptive variational algorithm for exact molecular simulations on a quantum computer
- Fermionic quantum computation
- Simulating Strongly Correlated Quantum Systems with Tree Tensor Networks
- Is the Trotterized UCCSD Ansatz chemically well-defined?
- Exponentially more precise quantum simulation of fermions I: Quantum chemistry in second quantization
- Generalization of the output of variational quantum eigensolver by parameter interpolation with low-depth ansatz
- Addressing hard classical problems with Adiabatically Assisted Variational Quantum Eigensolvers