Entanglement swapping via three-step quantum walk-like protocol
| Autor: | Nikola Paunković, Da-Chuang Li, Zhuo-Liang Cao, Ming Yang, Xiao-Man Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum Physics Quantum network Quantum sensor FOS: Physical sciences General Physics and Astronomy Quantum entanglement One-way quantum computer 01 natural sciences Multipartite entanglement 010309 optics Quantum technology Quantum mechanics 0103 physical sciences W state Quantum Physics (quant-ph) 010306 general physics Quantum teleportation |
| Zdroj: | Physics Letters A. 381:3875-3879 |
| ISSN: | 0375-9601 |
| DOI: | 10.1016/j.physleta.2017.10.022 |
| Popis: | We present an entanglement swapping process for unknown nonmaximally entangled photonic states, where the standard Bell-state measurement is replaced by a three-step quantum walk-like state discrimination process, i.e., the practically nontrivial coupling element of two photons is replaced by manipulating their trajectories, which will greatly enrich the dynamics of the coupling between photons in realizing quantum computation, and reduce the integration complexity of optical quantum processing. In addition, the output state can be maximally entangled, which allows for entanglement concentration as well. Comment: 16pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect