Quantum eigenstate tomography with qubit tunneling spectroscopy

Quantum eigenstate tomography with qubit tunneling spectroscopy

Measurement of the energy eigenvalues (spectrum) of a multi-qubit system has recently become possible by qubit tunneling spectroscopy (QTS). In the standard QTS experiments, an incoherent probe qubit is strongly coupled to one of the qubits of the system in such a way that its incoherent tunneling r...

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Date:2017
Main Authors: Smirnov, Anatoly Yu., Amin, Mohammad H.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2017
Series:Физика низких температур
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/129528
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Quantum eigenstate tomography with qubit tunneling spectroscopy / Anatoly Yu. Smirnov Mohammad H. Amin // Физика низких температур. — 2017. — Т. 43, № 7. — С. 969-977. — Бібліогр.: 16 назв. — англ.

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spelling nasplib_isofts_kiev_ua-123456789-1295282025-02-09T10:33:06Z Quantum eigenstate tomography with qubit tunneling spectroscopy Smirnov, Anatoly Yu. Amin, Mohammad H. Measurement of the energy eigenvalues (spectrum) of a multi-qubit system has recently become possible by qubit tunneling spectroscopy (QTS). In the standard QTS experiments, an incoherent probe qubit is strongly coupled to one of the qubits of the system in such a way that its incoherent tunneling rate provides information about the energy eigenvalues of the original (source) system. In this paper, we generalize QTS by coupling the probe qubit to many source qubits. We show that by properly choosing the couplings, one can perform projective measurements of the source system energy eigenstates in an arbitrary basis, thus performing quantum eigenstate tomography. As a practical example of a limited tomography, we apply our scheme to probe the eigenstates of a kink in a frustrated transverse Ising chain. We are thankful to Professor Alexander Omelyanchouk for collaboration and support in early days of D-Wave Systems. We are grateful to Chris Rich for helpful discussions and Fiona Hanington for critical reading of the paper. 2017 Article Quantum eigenstate tomography with qubit tunneling spectroscopy / Anatoly Yu. Smirnov Mohammad H. Amin // Физика низких температур. — 2017. — Т. 43, № 7. — С. 969-977. — Бібліогр.: 16 назв. — англ. 0132-6414 PACS: 03.67.–a, 03.67.Lx, 85.25.Am https://nasplib.isofts.kiev.ua/handle/123456789/129528 en Физика низких температур application/pdf Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description Measurement of the energy eigenvalues (spectrum) of a multi-qubit system has recently become possible by qubit tunneling spectroscopy (QTS). In the standard QTS experiments, an incoherent probe qubit is strongly coupled to one of the qubits of the system in such a way that its incoherent tunneling rate provides information about the energy eigenvalues of the original (source) system. In this paper, we generalize QTS by coupling the probe qubit to many source qubits. We show that by properly choosing the couplings, one can perform projective measurements of the source system energy eigenstates in an arbitrary basis, thus performing quantum eigenstate tomography. As a practical example of a limited tomography, we apply our scheme to probe the eigenstates of a kink in a frustrated transverse Ising chain.
format Article
author Smirnov, Anatoly Yu.
Amin, Mohammad H.
spellingShingle Smirnov, Anatoly Yu.
Amin, Mohammad H.
Quantum eigenstate tomography with qubit tunneling spectroscopy
Физика низких температур
author_facet Smirnov, Anatoly Yu.
Amin, Mohammad H.
author_sort Smirnov, Anatoly Yu.
title Quantum eigenstate tomography with qubit tunneling spectroscopy
title_short Quantum eigenstate tomography with qubit tunneling spectroscopy
title_full Quantum eigenstate tomography with qubit tunneling spectroscopy
title_fullStr Quantum eigenstate tomography with qubit tunneling spectroscopy
title_full_unstemmed Quantum eigenstate tomography with qubit tunneling spectroscopy
title_sort quantum eigenstate tomography with qubit tunneling spectroscopy
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2017
url https://nasplib.isofts.kiev.ua/handle/123456789/129528
citation_txt Quantum eigenstate tomography with qubit tunneling spectroscopy / Anatoly Yu. Smirnov Mohammad H. Amin // Физика низких температур. — 2017. — Т. 43, № 7. — С. 969-977. — Бібліогр.: 16 назв. — англ.
series Физика низких температур
work_keys_str_mv AT smirnovanatolyyu quantumeigenstatetomographywithqubittunnelingspectroscopy
AT aminmohammadh quantumeigenstatetomographywithqubittunnelingspectroscopy
first_indexed 2025-11-25T20:35:32Z
last_indexed 2025-11-25T20:35:32Z
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