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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| Дата: | 2017 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Назва видання: | Физика низких температур |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129528 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1295282018-01-20T03:05:06Z 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. 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 http://dspace.nbuv.gov.ua/handle/123456789/129528 en Физика низких температур 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 |
http://dspace.nbuv.gov.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 |
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