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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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2017 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/129528 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862549588486914048 |
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| author | Smirnov, Anatoly Yu. Amin, Mohammad H. |
| author_facet | Smirnov, Anatoly Yu. Amin, Mohammad H. |
| 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. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| 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.
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| first_indexed | 2025-11-25T20:35:32Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-129528 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T20:35:32Z |
| publishDate | 2017 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Smirnov, Anatoly Yu. Amin, Mohammad H. 2018-01-19T20:45:03Z 2018-01-19T20:45:03Z 2017 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 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. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Quantum eigenstate tomography with qubit tunneling spectroscopy Article published earlier |
| spellingShingle | Quantum eigenstate tomography with qubit tunneling spectroscopy Smirnov, Anatoly Yu. Amin, Mohammad H. |
| title | 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_short | Quantum eigenstate tomography with qubit tunneling spectroscopy |
| title_sort | quantum eigenstate tomography with qubit tunneling spectroscopy |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/129528 |
| work_keys_str_mv | AT smirnovanatolyyu quantumeigenstatetomographywithqubittunnelingspectroscopy AT aminmohammadh quantumeigenstatetomographywithqubittunnelingspectroscopy |