Dr. Paul Stevenson Profile

Dr. Paul Stevenson

at University of Surrey

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Proceedings Article | 31 May 2022 Poster + Paper

Quantum computing calculations for nuclear structure and nuclear data

Isaac Hobday, Paul Stevenson, James Benstead

Proceedings Volume 12133, 121330J (2022) https://doi.org/10.1117/12.2632782

KEYWORDS: Quantum computing, Quantum physics, Computer simulations, Particles, Nuclear physics

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Calculations of nuclear properties and nuclear models are performed using quantum computing algorithms on simulated and real quantum computers. The models are a realistic calculation of deuteron binding based on effective field theory, and a simplified two-level version of the nuclear shell model. A method of reducing the number of qubits needed for practical calculation is presented, the reduction being with respect to that used when the standard Jordan-Wigner encoding is used. Its efficacy is shown in the case of the deuteron binding and shell model. A version of the variational quantum eigensolver in which all eigenstates in a spectrum are targeted on an equal basis is shown. The method involves finding the minima of the variance of the Hamiltonian, and its ability to find the full spectrum of small version of the simplified shell model is presented.

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