Generation of two-photon hybrid-entangled W state with photonic qubit and time-bin via cross-Kerr nonlinearities
- Authors
- Hong, Changho; Heo, Jino; Kang, Min-Sung; Jang, Jingak; Yang, Hyung-Jin; Kwon, Daesung
- Issue Date
- 8월-2020
- Publisher
- IOP PUBLISHING LTD
- Keywords
- two-photon hybrid-entangled W state; cross-Kerr nonlinearity; time-bin encoding
- Citation
- PHYSICA SCRIPTA, v.95, no.8
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICA SCRIPTA
- Volume
- 95
- Number
- 8
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/53882
- DOI
- 10.1088/1402-4896/aba02e
- ISSN
- 0031-8949
- Abstract
- Herein, we present a scheme to prepare a hybrid-entangled W state that possesses the polarization states of two photons and the time-bin using cross-Kerr nonlinearities (XKNLs) and linearly optical devices. To maximize the merit of the entangled W state that can conserve entanglement against the loss of one qubit, we propose a method to prepare a two-photon hybrid-entangled W state correlated with degrees of freedom (polarization and the time-bin) via nonlinearly optical gates using XKNLs. In our scheme, the nonlinear gates consist of weak XKNLs, quantum bus beams, and photon-number-resolving measurements to realize the controlled-path gate and merging-path gate between two photons. To insert the time-bin information into photons, the time-bin encoder employs only linearly optical devices (delay lines and polarizing beam splitters). Subsequently, to evaluate the efficiency and experimental feasibility of our scheme for generating a two-photon hybrid-entangled W state, we analyzed the performance of nonlinear gates using XKNLs under the decoherence effect.
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Collections - College of Science and Technology > Semiconductor Physics in Division of Display and Semiconductor Physics > 1. Journal Articles
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