Demonstration of a flexible scheme for two-qubit quantum computation with single photon
To build a quantum computing device, which is capable of generating arbitrary input states and performing universal unitary gate operations (UUGOs), is an important goal in the field of quantum information science. However, only a few special quantum computations have been reported by now based on s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2020-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5140226 |
| _version_ | 1818855108017913856 |
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| author | Zhenwei Yang Jiangwei Shang Xiangdong Zhang |
| author_facet | Zhenwei Yang Jiangwei Shang Xiangdong Zhang |
| author_sort | Zhenwei Yang |
| collection | DOAJ |
| description | To build a quantum computing device, which is capable of generating arbitrary input states and performing universal unitary gate operations (UUGOs), is an important goal in the field of quantum information science. However, only a few special quantum computations have been reported by now based on specific input states and well-designed information processors. Here, we demonstrate a flexible scheme for two-qubit quantum computations by employing the polarization and the spatial mode of a single photon. Two-qubit UUGOs both in free-space optics and for arbitrary pure input states consisting of separable states and entangled states are presented. Quantum state tomography and process tomography are used to characterize the fidelity of the output states and the gate operations we considered. Beyond a demonstration, we believe that our work also enriches the techniques of bulk-optics for quantum information study and has a broad application for other fundamental research. |
| first_indexed | 2024-12-19T08:03:21Z |
| format | Article |
| id | doaj.art-0f02b4e0ed2442ba851cf86dce4db54b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-19T08:03:21Z |
| publishDate | 2020-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-0f02b4e0ed2442ba851cf86dce4db54b2022-12-21T20:29:48ZengAIP Publishing LLCAIP Advances2158-32262020-03-01103035019035019-510.1063/1.5140226Demonstration of a flexible scheme for two-qubit quantum computation with single photonZhenwei Yang0Jiangwei Shang1Xiangdong Zhang2School of Physics, Beijing Institute of Technology and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measure of Ministry of Education, 100081 Beijing, ChinaSchool of Physics, Beijing Institute of Technology and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measure of Ministry of Education, 100081 Beijing, ChinaSchool of Physics, Beijing Institute of Technology and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measure of Ministry of Education, 100081 Beijing, ChinaTo build a quantum computing device, which is capable of generating arbitrary input states and performing universal unitary gate operations (UUGOs), is an important goal in the field of quantum information science. However, only a few special quantum computations have been reported by now based on specific input states and well-designed information processors. Here, we demonstrate a flexible scheme for two-qubit quantum computations by employing the polarization and the spatial mode of a single photon. Two-qubit UUGOs both in free-space optics and for arbitrary pure input states consisting of separable states and entangled states are presented. Quantum state tomography and process tomography are used to characterize the fidelity of the output states and the gate operations we considered. Beyond a demonstration, we believe that our work also enriches the techniques of bulk-optics for quantum information study and has a broad application for other fundamental research.http://dx.doi.org/10.1063/1.5140226 |
| spellingShingle | Zhenwei Yang Jiangwei Shang Xiangdong Zhang Demonstration of a flexible scheme for two-qubit quantum computation with single photon AIP Advances |
| title | Demonstration of a flexible scheme for two-qubit quantum computation with single photon |
| title_full | Demonstration of a flexible scheme for two-qubit quantum computation with single photon |
| title_fullStr | Demonstration of a flexible scheme for two-qubit quantum computation with single photon |
| title_full_unstemmed | Demonstration of a flexible scheme for two-qubit quantum computation with single photon |
| title_short | Demonstration of a flexible scheme for two-qubit quantum computation with single photon |
| title_sort | demonstration of a flexible scheme for two qubit quantum computation with single photon |
| url | http://dx.doi.org/10.1063/1.5140226 |
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