Collective neutrino oscillations on a quantum computer with hybrid quantum-classical algorithm

Journal Article · 27 October 2023 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.108.083039 · OSTI ID:2217108

Siwach, Pooja  ^[1]; Harrison, Kaytlin  ^[2]; Balantekin, A. Baha  ^[2]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); University of Wisconsin, Madison, WI (United States)
2. University of Wisconsin, Madison, WI (United States)

We simulate the time evolution of collective neutrino oscillations in two-flavor settings on a quantum computer. We explore the generalization of Trotter-Suzuki approximation to time-dependent Hamiltonian dynamics. The trotterization steps are further optimized using the Cartan decomposition of two-qubit unitary gates U ϵ SU(4) in the minimum number of controlled-NOT (CNOT) gates making the algorithm more resilient to the hardware noise. As a result, a more efficient hybrid quantum-classical algorithm is also explored to solve the problem on noisy intermediate-scale quantum devices.

• Research Organization: Univ. of Wisconsin, Madison, WI (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: SC0019465; PHY-2108339; AC52-07NA27344; SC001822; PHY2108339
• OSTI ID: 2217108
• Alternate ID(s): OSTI ID: 2246717
• Report Number(s): LLNL-JRNL-853275; TRN: US2407000
• Journal Information: Physical Review. D., Vol. 108, Issue 8; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English