Controllable generation of mixed two-photon states
We report a controllable method for producing mixed two-photon states via spontaneous parametric down-conversion with a two-type-I crystal geometry. By using variable polarization rotators (VPRs), one obtains mixed states of various purities and degrees of entanglement depending on the parameters of...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
|
| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/6/063011 |
| _version_ | 1797751557209456640 |
|---|---|
| author | Jibo Dai Yink Loong Len Yong Siah Teo Leonid A Krivitsky Berthold-Georg Englert |
| author_facet | Jibo Dai Yink Loong Len Yong Siah Teo Leonid A Krivitsky Berthold-Georg Englert |
| author_sort | Jibo Dai |
| collection | DOAJ |
| description | We report a controllable method for producing mixed two-photon states via spontaneous parametric down-conversion with a two-type-I crystal geometry. By using variable polarization rotators (VPRs), one obtains mixed states of various purities and degrees of entanglement depending on the parameters of the VPRs. The generated states are characterized by quantum state tomography. The experimental results are found to be in good agreement with the theory. The method can be easily implemented for various experiments that require the generation of states with controllable degrees of entanglement or mixedness. |
| first_indexed | 2024-03-12T16:51:15Z |
| format | Article |
| id | doaj.art-0a120cd7404a4c8388fcaa06dd7406e4 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:51:15Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0a120cd7404a4c8388fcaa06dd7406e42023-08-08T11:09:58ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115606301110.1088/1367-2630/15/6/063011Controllable generation of mixed two-photon statesJibo Dai0Yink Loong Len1Yong Siah Teo2Leonid A Krivitsky3Berthold-Georg Englert4Data Storage Institute , Agency for Science, Technology, and Research, 5 Engineering Drive I, Singapore 117608, Singapore; Centre for Quantum Technologies, National University of Singapore , 3 Science Drive 2, Singapore 117543, SingaporeData Storage Institute , Agency for Science, Technology, and Research, 5 Engineering Drive I, Singapore 117608, Singapore; Centre for Quantum Technologies, National University of Singapore , 3 Science Drive 2, Singapore 117543, Singapore; Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117542, SingaporeDepartment of Optics, Palacký University , 17. listopadu 12, 77146 Olomouc, Czech RepublicData Storage Institute , Agency for Science, Technology, and Research, 5 Engineering Drive I, Singapore 117608, SingaporeCentre for Quantum Technologies, National University of Singapore , 3 Science Drive 2, Singapore 117543, Singapore; Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117542, SingaporeWe report a controllable method for producing mixed two-photon states via spontaneous parametric down-conversion with a two-type-I crystal geometry. By using variable polarization rotators (VPRs), one obtains mixed states of various purities and degrees of entanglement depending on the parameters of the VPRs. The generated states are characterized by quantum state tomography. The experimental results are found to be in good agreement with the theory. The method can be easily implemented for various experiments that require the generation of states with controllable degrees of entanglement or mixedness.https://doi.org/10.1088/1367-2630/15/6/063011 |
| spellingShingle | Jibo Dai Yink Loong Len Yong Siah Teo Leonid A Krivitsky Berthold-Georg Englert Controllable generation of mixed two-photon states New Journal of Physics |
| title | Controllable generation of mixed two-photon states |
| title_full | Controllable generation of mixed two-photon states |
| title_fullStr | Controllable generation of mixed two-photon states |
| title_full_unstemmed | Controllable generation of mixed two-photon states |
| title_short | Controllable generation of mixed two-photon states |
| title_sort | controllable generation of mixed two photon states |
| url | https://doi.org/10.1088/1367-2630/15/6/063011 |
| work_keys_str_mv | AT jibodai controllablegenerationofmixedtwophotonstates AT yinkloonglen controllablegenerationofmixedtwophotonstates AT yongsiahteo controllablegenerationofmixedtwophotonstates AT leonidakrivitsky controllablegenerationofmixedtwophotonstates AT bertholdgeorgenglert controllablegenerationofmixedtwophotonstates |