Qubit state tomography in a superconducting circuit via weak measurements
In this work we present a study on a new scheme for measuring the qubit state in a circuit quantum electrodynamics (QED) system, based on weak measurement and the concept of weak value. To be applicable under generic parameter conditions, our formulation and analysis are carried out for finite-stren...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa646e |
| _version_ | 1797750820259758080 |
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| author | Lupei Qin Luting Xu Wei Feng Xin-Qi Li |
| author_facet | Lupei Qin Luting Xu Wei Feng Xin-Qi Li |
| author_sort | Lupei Qin |
| collection | DOAJ |
| description | In this work we present a study on a new scheme for measuring the qubit state in a circuit quantum electrodynamics (QED) system, based on weak measurement and the concept of weak value. To be applicable under generic parameter conditions, our formulation and analysis are carried out for finite-strength weak measurement, and in particular beyond the bad-cavity and weak-response limits. The proposed study is accessible to present state-of-the-art circuit QED experiments. |
| first_indexed | 2024-03-12T16:39:22Z |
| format | Article |
| id | doaj.art-4dc9069091e04fb5918ba39fb678e36b |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:39:22Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-4dc9069091e04fb5918ba39fb678e36b2023-08-08T14:36:09ZengIOP PublishingNew Journal of Physics1367-26302017-01-0119303303610.1088/1367-2630/aa646eQubit state tomography in a superconducting circuit via weak measurementsLupei Qin0Luting Xu1Wei Feng2Xin-Qi Li3Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University , Beijing 100875, People’s Republic of ChinaCenter for Advanced Quantum Studies and Department of Physics, Beijing Normal University , Beijing 100875, People’s Republic of ChinaDepartment of Physics, Tianjin University , Tianjin 300072, People’s Republic of ChinaCenter for Advanced Quantum Studies and Department of Physics, Beijing Normal University , Beijing 100875, People’s Republic of ChinaIn this work we present a study on a new scheme for measuring the qubit state in a circuit quantum electrodynamics (QED) system, based on weak measurement and the concept of weak value. To be applicable under generic parameter conditions, our formulation and analysis are carried out for finite-strength weak measurement, and in particular beyond the bad-cavity and weak-response limits. The proposed study is accessible to present state-of-the-art circuit QED experiments.https://doi.org/10.1088/1367-2630/aa646equantum weak measurementweak valuestate tomography03.65.Ta03.65.Yz42.50.Lc |
| spellingShingle | Lupei Qin Luting Xu Wei Feng Xin-Qi Li Qubit state tomography in a superconducting circuit via weak measurements New Journal of Physics quantum weak measurement weak value state tomography 03.65.Ta 03.65.Yz 42.50.Lc |
| title | Qubit state tomography in a superconducting circuit via weak measurements |
| title_full | Qubit state tomography in a superconducting circuit via weak measurements |
| title_fullStr | Qubit state tomography in a superconducting circuit via weak measurements |
| title_full_unstemmed | Qubit state tomography in a superconducting circuit via weak measurements |
| title_short | Qubit state tomography in a superconducting circuit via weak measurements |
| title_sort | qubit state tomography in a superconducting circuit via weak measurements |
| topic | quantum weak measurement weak value state tomography 03.65.Ta 03.65.Yz 42.50.Lc |
| url | https://doi.org/10.1088/1367-2630/aa646e |
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