TY - JOUR

T1 - Iterative quantum phase estimation on an IBM quantum processor

AU - Zhuravlev, N. A.

AU - Beterov, I. I.

N1 - Publisher Copyright: © 2021 Kvantovaya Elektronika and IOP Publishing Limited. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6

Y1 - 2021/6

N2 - 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.

AB - 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.

KW - Modified Kitaev algorithm

KW - Quantum phase estimation

KW - Quantum processor

KW - Two-qubit gate

UR - http://www.scopus.com/inward/record.url?scp=85107997285&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=46829014

U2 - 10.1070/QEL17586

DO - 10.1070/QEL17586

M3 - Article

AN - SCOPUS:85107997285

VL - 51

SP - 506

EP - 510

JO - Quantum Electronics

JF - Quantum Electronics

SN - 1063-7818

IS - 6

M1 - 9

ER -