Iterative quantum phase estimation on an IBM quantum processor

Abstract An elementary algorithm of quantum phase estimation based on the modified Kitaev algorithm is implemented on two qubits of an IBM quantum processor. This algorithm includes adiabatic preparation of the initial state, controlled phase shift with allowance for the results of previous measurem...

Full description

Saved in:
Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2021-06, Vol.51 (6), p.506-510
Main Authors: Zhuravlev, N.A., Beterov, I.I.
Format: Article
Language:English
Subjects:
Algorithms
Error analysis
Error correction
Microprocessors
modified Kitaev algorithm
quantum phase estimation
quantum processor
Qubits (quantum computing)
two-qubit gate
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract An elementary algorithm of quantum phase estimation based on the modified Kitaev algorithm is implemented on two qubits of an IBM quantum processor. This algorithm includes adiabatic preparation of the initial state, controlled phase shift with allowance for the results of previous measurements of qubit states, and single measurement of the qubit quantum state in order to obtain each significant bit of the measured phase. Classical error correction is applied to determine the correct sequence of bits, which makes it possible to eliminate the influence of limited accuracy of two-qubit gates.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL17586