Optimal superadiabatic population transfer and gates by dynamical phase corrections

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Optimal superadiabatic population transfer and gates by dynamical phase corrections. / Vepsäläinen, A.; Danilin, S.; Paraoanu, G. S.

julkaisussa: Quantum Science and Technology, Vuosikerta 3, Nro 2, 024006, 01.04.2018.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{2b52a3b186a04c1f85d13b1142f536f9,
title = "Optimal superadiabatic population transfer and gates by dynamical phase corrections",
abstract = "In many quantum technologies adiabatic processes are used for coherent quantum state operations, offering inherent robustness to errors in the control parameters. The main limitation is the long operation time resulting from the requirement of adiabaticity. The superadiabatic method allows for faster operation, by applying counterdiabatic driving that corrects for excitations resulting from the violation of the adiabatic condition. In this article we show how to construct the counterdiabatic Hamiltonian in a system with forbidden transitions by using two-photon processes and how to correct for the resulting time-dependent ac-Stark shifts in order to enable population transfer with unit fidelity. We further demonstrate that superadiabatic stimulated Raman passage can realize a robust unitary NOT-gate between the ground state and the second excited state of a three-level system. The results can be readily applied to a three-level transmon with the ladder energy level structure.",
keywords = "adiabatic gates, quantum gates, shortcuts to adiabaticity, STIRAP",
author = "A. Veps{\"a}l{\"a}inen and S. Danilin and Paraoanu, {G. S.}",
year = "2018",
month = "4",
day = "1",
doi = "10.1088/2058-9565/aaa640",
language = "English",
volume = "3",
journal = "Quantum Science and Technology",
issn = "2058-9565",
number = "2",

}

RIS - Lataa

TY - JOUR

T1 - Optimal superadiabatic population transfer and gates by dynamical phase corrections

AU - Vepsäläinen, A.

AU - Danilin, S.

AU - Paraoanu, G. S.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - In many quantum technologies adiabatic processes are used for coherent quantum state operations, offering inherent robustness to errors in the control parameters. The main limitation is the long operation time resulting from the requirement of adiabaticity. The superadiabatic method allows for faster operation, by applying counterdiabatic driving that corrects for excitations resulting from the violation of the adiabatic condition. In this article we show how to construct the counterdiabatic Hamiltonian in a system with forbidden transitions by using two-photon processes and how to correct for the resulting time-dependent ac-Stark shifts in order to enable population transfer with unit fidelity. We further demonstrate that superadiabatic stimulated Raman passage can realize a robust unitary NOT-gate between the ground state and the second excited state of a three-level system. The results can be readily applied to a three-level transmon with the ladder energy level structure.

AB - In many quantum technologies adiabatic processes are used for coherent quantum state operations, offering inherent robustness to errors in the control parameters. The main limitation is the long operation time resulting from the requirement of adiabaticity. The superadiabatic method allows for faster operation, by applying counterdiabatic driving that corrects for excitations resulting from the violation of the adiabatic condition. In this article we show how to construct the counterdiabatic Hamiltonian in a system with forbidden transitions by using two-photon processes and how to correct for the resulting time-dependent ac-Stark shifts in order to enable population transfer with unit fidelity. We further demonstrate that superadiabatic stimulated Raman passage can realize a robust unitary NOT-gate between the ground state and the second excited state of a three-level system. The results can be readily applied to a three-level transmon with the ladder energy level structure.

KW - adiabatic gates

KW - quantum gates

KW - shortcuts to adiabaticity

KW - STIRAP

UR - http://www.scopus.com/inward/record.url?scp=85046939543&partnerID=8YFLogxK

U2 - 10.1088/2058-9565/aaa640

DO - 10.1088/2058-9565/aaa640

M3 - Article

VL - 3

JO - Quantum Science and Technology

JF - Quantum Science and Technology

SN - 2058-9565

IS - 2

M1 - 024006

ER -

ID: 29768494