Concurrence Measurement for the Two-Qubit Optical and Atomic States
Concurrence provides us an effective approach to quantify entanglement, which is quite important in quantum information processing applications. In the paper, we mainly review some direct concurrence measurement protocols of the two-qubit optical or atomic system. We first introduce the concept of c...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-06-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1099-4300/17/6/4293 |
| _version_ | 1818035736087101440 |
|---|---|
| author | Lan Zhou Yu-Bo Sheng |
| author_facet | Lan Zhou Yu-Bo Sheng |
| author_sort | Lan Zhou |
| collection | DOAJ |
| description | Concurrence provides us an effective approach to quantify entanglement, which is quite important in quantum information processing applications. In the paper, we mainly review some direct concurrence measurement protocols of the two-qubit optical or atomic system. We first introduce the concept of concurrence for a two-qubit system. Second, we explain the approaches of the concurrence measurement in both a linear and a nonlinear optical system. Third, we introduce some protocols for measuring the concurrence of the atomic entanglement system. |
| first_indexed | 2024-12-10T06:59:47Z |
| format | Article |
| id | doaj.art-2d3c4a29240042718af30e2079487747 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-12-10T06:59:47Z |
| publishDate | 2015-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-2d3c4a29240042718af30e20794877472022-12-22T01:58:21ZengMDPI AGEntropy1099-43002015-06-011764293432210.3390/e17064293e17064293Concurrence Measurement for the Two-Qubit Optical and Atomic StatesLan Zhou0Yu-Bo Sheng1College of Mathematics & Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaKey Lab of Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications, Ministry of Education, Nanjing 210003, ChinaConcurrence provides us an effective approach to quantify entanglement, which is quite important in quantum information processing applications. In the paper, we mainly review some direct concurrence measurement protocols of the two-qubit optical or atomic system. We first introduce the concept of concurrence for a two-qubit system. Second, we explain the approaches of the concurrence measurement in both a linear and a nonlinear optical system. Third, we introduce some protocols for measuring the concurrence of the atomic entanglement system.http://www.mdpi.com/1099-4300/17/6/4293quantum entanglementconcurrencequantum nondemolition measurement |
| spellingShingle | Lan Zhou Yu-Bo Sheng Concurrence Measurement for the Two-Qubit Optical and Atomic States Entropy quantum entanglement concurrence quantum nondemolition measurement |
| title | Concurrence Measurement for the Two-Qubit Optical and Atomic States |
| title_full | Concurrence Measurement for the Two-Qubit Optical and Atomic States |
| title_fullStr | Concurrence Measurement for the Two-Qubit Optical and Atomic States |
| title_full_unstemmed | Concurrence Measurement for the Two-Qubit Optical and Atomic States |
| title_short | Concurrence Measurement for the Two-Qubit Optical and Atomic States |
| title_sort | concurrence measurement for the two qubit optical and atomic states |
| topic | quantum entanglement concurrence quantum nondemolition measurement |
| url | http://www.mdpi.com/1099-4300/17/6/4293 |
| work_keys_str_mv | AT lanzhou concurrencemeasurementforthetwoqubitopticalandatomicstates AT yubosheng concurrencemeasurementforthetwoqubitopticalandatomicstates |