Julia A Rice

US Patent:

20210118529, Apr 22, 2021

Filed:

Oct 22, 2019

Appl. No.:

16/660059

Inventors:

- Armonk NY, US
Antonio Mezzacapo - Westchester NY, US
Richard Chen - Mount Kisco NY, US
Marco Pistoia - Amawalk NY, US
Julia Elizabeth Rice - Sunnyvale CA, US

International Classification:

G16C 10/00
G16C 20/50
G16C 20/90
G06N 10/00
G06F 17/16

Abstract:

Systems and techniques that facilitate precision-preserving qubit reduction based on spatial symmetries in fermionic systems are provided. In one or more embodiments, a symmetry component can generate a diagonalized second quantization representation of a spatial point group symmetry operation. The spatial point group symmetry operation can be associated with a molecule (e.g., a geometrical rotation, reflection, and/or inversion of a physical molecule that results in a new molecular orientation that is substantially the same as the original molecular orientation). In one or more embodiments, a transformation component can convert the diagonalized second quantization representation into a single Pauli string. In one or more embodiments, a tapering component can taper off qubits in a computational quantum algorithm that models properties of the molecule, based on the single Pauli string. Various embodiments can thus leverage geometrical spatial symmetries of a molecule to reduce a number of qubits needed to simulate the molecule.