scholarly journals High efficiency frequency upconversion of photons carrying orbital angular momentum for a quantum information interface

2015 ◽  
Vol 23 (8) ◽  
pp. 9796 ◽  
Author(s):  
Ruikai Tang ◽  
Xiongjie Li ◽  
Wenjie Wu ◽  
Haifeng Pan ◽  
Heping Zeng ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Quantum Information ◽  
Orbital Angular Momentum ◽  
High Efficiency ◽  
Frequency Upconversion

scholarly journals High-Efficiency Spin-Related Vortex Metalenses

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1485
Author(s):  
Wei Wang ◽  
Ruikang Zhao ◽  
Shilong Chang ◽  
Jing Li ◽  
Yan Shi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Topological Charge ◽  
High Efficiency ◽  
Infrared Band ◽  
Mid Infrared ◽  
Integrated Devices ◽  
Vortex Beams ◽  
Topological Charges

In this paper, one spin-selected vortex metalens composed of silicon nanobricks is designed and numerically investigated at the mid-infrared band, which can produce vortex beams with different topological charges and achieve different spin lights simultaneously. Another type of spin-independent vortex metalens is also designed, which can focus the vortex beams with the same topological charge at the same position for different spin lights, respectively. Both of the two vortex metalenses can achieve high-efficiency focusing for different spin lights. In addition, the spin-to-orbital angular momentum conversion through the vortex metalens is also discussed in detail. Our work facilitates the establishment of high-efficiency spin-related integrated devices, which is significant for the development of vortex optics and spin optics.

Generation of Orbital Angular Momentum Vortex Beams Based on High-Efficiency Transmission Metasurfaces

2019 ◽  
Vol 39 (1) ◽  
pp. 0126016
Author(s):  
刘凯婷 Liu Kaiting ◽  
刘鑫 Liu Xin ◽  
葛悦禾 Ge Yuehe ◽  
蒲继雄 Pu Jixiong
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
High Efficiency ◽  
Vortex Beams

scholarly journals Quantum Information Transfer from Spin to Orbital Angular Momentum of Photons

2009 ◽  
Vol 103 (1) ◽  
Author(s):  
Eleonora Nagali ◽  
Fabio Sciarrino ◽  
Francesco De Martini ◽  
Lorenzo Marrucci ◽  
Bruno Piccirillo ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Quantum Information ◽  
Orbital Angular Momentum ◽  
Information Transfer

The analysis of high-capacity quantum secure direct communication using polarization and orbital angular momentum of photons

2019 ◽  
Vol 34 (02) ◽  
pp. 2050017 ◽  
Author(s):  
Lin-Yi Li ◽  
Tie-Jun Wang ◽  
Chuan Wang
Keyword(s):  
Angular Momentum ◽  
Quantum Information ◽  
Channel Capacity ◽  
Orbital Angular Momentum ◽  
Quantum Communication ◽  
High Capacity ◽  
Quantum Secure Direct Communication ◽  
Noise Elimination ◽  
Long Distance ◽  
Direct Communication

Higher channel capacity and noise elimination are the key requirements for the implementation of long-distance quantum communication. As the additional degrees of freedom (DoF) of photons can be employed to achieve higher channel capacity and security beyond the polarizations DoF of photons, the photonic qubits are always employed as the flying qubits in quantum communication and quantum information processing. Here, exploiting the multiple DoFs of photons, we present an efficient quantum secure direct communication protocol based on the coding and manipulation of qubits on both the polarization and the orbital angular momentum of photons. Also, the numerical simulation is studied to further clarify the improvement of the channel capacity and the security. It is found that the channel capacity and the error rate (caused by eavesdropping) of the QSDC protocol which encoded on the polarization DoF and the OAM DoF is significantly higher than that of coding on only polarization DoF. We believe this work could provide more evidence for the applications of higher-dimensional qubits in quantum information science.

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