Prediction of the neutron drip line in oxygen isotopes using quantum computation

Abstract

In the noisy intermediate-scale quantum era, variational algorithms have become a standard approach to solving quantum many-body problems. Here, we present variational quantum eigensolver (VQE) results of selected oxygen isotopes within the shell model description. The aim of the present work is to locate the neutron drip line of the oxygen chain using unitary coupled cluster (UCC) type ansatze with different microscopic interactions (DJ16, JISP16, and N3LO), in addition to a phenomenological USDB interaction. While initially infeasible to execute on contemporary quantum hardware, the size of the problem is reduced significantly using qubit tapering techniques in conjunction with custom circuit design and optimization. The optimal values of ansatz parameters from classical simulation are taken for the DJ16 interaction, and the tapered circuits are run on IonQ's Aria, a trapped-ion quantum computer. After applying gate error mitigation for three isotopes, we reproduced exact ground state energies within a few percent error. The post-processed results from hardware also clearly show ${}^{24}$O as the drip line nucleus of the oxygen chain. Future improvements in quantum hardware could make it possible to locate drip lines of heavier nuclei.

arXiv comment13 pages, 10 figures, 8 tables

References in corpus (35)

• Quantum Computing in the NISQ era and beyond
• A variational eigenvalue solver on a quantum processor
• Elementary gates for quantum computation
• Variational Quantum Algorithms
• Quantum computational chemistry
• Accurate Charge-Dependent Nucleon-Nucleon Potential at Fourth Order of Chiral Perturbation Theory
• Error mitigation for short-depth quantum circuits
• The Shell Model as Unified View of Nuclear Structure
• An adaptive variational algorithm for exact molecular simulations on a quantum computer
• Evolution of shell structure in exotic nuclei
• Cloud Quantum Computing of an Atomic Nucleus
• Thick-Restart Block Lanczos Method for Large-Scale Shell-Model Calculations
• Many-body nuclear Hamiltonian: Ab exitu approach
• Simulations of Subatomic Many-Body Physics on a Quantum Frequency Processor
• N3LO NN interaction adjusted to light nuclei in ab exitu approach
• Reducing qubit requirements for quantum simulation using molecular point group symmetries
• Factorization in large-scale many-body calculations
• ADAPT-VQE is insensitive to rough parameter landscapes and barren plateaus
• Improving Hamiltonian encodings with the Gray code
• Quantum computing of the ${}^6$Li nucleus via ordered unitary coupled clusters
• Variational approaches to constructing the many-body nuclear ground state for quantum computing
• Solving Nuclear Structure Problems with the Adaptive Variational Quantum Algorithm
• Symmetry assisted preparation of entangled many-body states on a quantum computer
• Ab initio effective interactions for sd-shell valence nucleons
• Nuclear shell-model simulation in digital quantum computers
• Toward convergence of effective field theory simulations on digital quantum computers
• Quantum Simulation of Nuclear Inelastic Scattering
• Effective interactions in the sd shell
• Ab-initio no-core shell model study of ${}^{10-14}$B isotopes with realistic NN interactions
• Quantum computation of nuclear observables involving linear combination of unitary operators
• Ab initio no-core shell model description of ${}^{10-14}$C isotopes
• Ab-initio no-core shell model study of ${}^{18-24}$Ne isotopes
• Study of structure and radii for ${}^{20-31}$Na isotopes using microscopic interactions
• Nuclear structure properties of Si and P isotopes with the microscopic effective interactions
• Study of S, Cl and Ar isotopes with $N\ge Z$ using microscopic effective $sd$-shell interactions

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• A Quantum Simulation Approach to Implementing Nuclear Density Functional Theory via Imaginary Time Evolution
• A Quantum Annealing Protocol to Solve the Nuclear Shell Model
• Quantum techniques for eigenvalue problems
• Bridging Quantum Computing and Nuclear Structure: Atomic Nuclei on a Trapped-Ion Quantum Computer
• Toward scalable quantum computations of atomic nuclei
• A low-circuit-depth quantum computing approach to the nuclear shell model
• Study of entanglement in Ne, Mg, and Si isotopic chains