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Quantum Computing

Search All Applications in Quantum Computing


Application 20200160204


Published 2020-05-21

Hybrid Quantum-classical Computer For Packing Bits Into Qubits For Quantum Optimization Algorithms

A hybrid quantum classical (HQC) computer, which includes both a classical computer component and a quantum computer component, implements improvements to the quantum approximate optimization algorithm (QAOA) which enable QAOA to be applied to valuable problem instances (e.g., those including several thousand or more qubits) using near-term quantum computers.


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2 Independent Claims

  • Independent Claim 1. A method for reducing the number of qubits with which an operator is represented on a quantum computer, the method comprising: (1) receiving, as input, at a classical computer, an N-qubit operator(2) decomposing, at the classical computer, the N-qubit operator as a linear combination of products of Majorana operators on 2N Majorana modes(3) forming, at the classical computer, a second operator, representable on M qubits, based on a linear transformation of the Majorana operators of the N-qubit operator, wherein the linear transformation is from R{circumflex over ( )}(2N) to R{circumflex over ( )}(2M), wherein M&ltN.

  • Independent Claim 18. A system comprising: a classical computer including a processor, a non-transitory computer-readable medium, and computer program instructions stored in the non-transitory computer-readable mediuma quantum computer comprising a plurality of qubitswherein the computer program instructions, when executed by the processor, perform a method for reducing the number of qubits with which an operator is represented on the quantum computer, the method comprising: (1) receiving, as input, at a classical computer, an N-qubit operator(2) decomposing, at the classical computer, the N-qubit operator as a linear combination of products of Majorana operators on 2N Majorana modes(3) forming, at the classical computer, a second operator, representable on M qubits, based on a linear transformation of the Majorana operators of the N-qubit operator, wherein the linear transformation is from R{circumflex over ( )}(2N) to R{circumflex over ( )}(2M), wherein M&ltN.