US 2022/0188682 A1 · READOUT-ERROR MITIGATION FOR QUANTUM EXPECTATION

Abstract

Techniques for mitigating readout error for quantum expectation are presented. Calibration component applies first random Pauli gates to qubits at first output of first circuit prior to first readout measurements of the qubits. Estimation component applies second random Pauli gates to qubits at second output of second circuit prior to second readout measurements of the qubits, and generates an error-mitigated readout determination based on first random Pauli gates applied to qubits at first circuit output and second random Pauli gates applied to qubits at second circuit output. Calibration component determines calibration data based on first readout measurements. Estimation component determines estimation data based on second readout measurements. Estimation component determines normalization scalar value based on the calibration data, determines estimation scalar value based on the estimation data, and determines the error-mitigated readout determination associated with a circuit of interest based on the normalization scalar value and estimation scalar value.

Claims25

Dependent claims

A system, comprising:

a memory that stores computer-executable components;
and
a processor, operatively coupled to the memory, that executes computer-executable components, the computer-executable components comprising:
a calibration component that applies first random Pauli gates to qubits at a first output of a first circuit prior to first readout measurements of the qubits;
and
an estimation component that applies second random Pauli gates to the qubits at a second output of a second circuit prior to second readout measurements of the qubits.

3 more elements

A system, comprising:

a memory that stores computer-executable components;
and
a processor, operatively coupled to the memory, that executes computer-executable components, the computer-executable components comprising:
a calibration component that applies first random Pauli gates to qubits at a first output of a first circuit prior to first readout measurements of the qubits;
and
an estimation component that applies pairs of random Pauli gates to the qubits associated with a second circuit, comprising application of second random Pauli gates to the qubits at a second output of the second circuit, prior to second readout measurements of the qubits.

3 more elements

A computer-implemented method, comprising:

applying, by a system operatively coupled to a processor, first random Pauli operators to qubits at a first output of a first circuit prior to first readout measurements of the qubits;
and
applying, by the system, pairs of random Pauli operators to the qubits associated with a second circuit, comprising applying second random Pauli operators to the qubits at a second output of the second circuit, prior to second readout measurements of the qubits.

Dependencies are inferred from the claim text.

Readout-error mitigation for quantum expectation

Life of this patent

Readout-error mitigation for quantum expectation

Life of this patent

Abstract

Claims25