A quantum knitting machine generating on demand cluster states of entangled photons

Author(s):  
David Gershoni
Author(s):  
Matthew Chalmers
Keyword(s):  

Author(s):  
Katharina D. Zeuner ◽  
Klaus D. Jöns ◽  
Lucas Schweickert ◽  
Carl Reuterskiöld Hedlund ◽  
Carlos Nunez Lobato ◽  
...  
Keyword(s):  

2019 ◽  
Vol 122 (11) ◽  
Author(s):  
Hui Wang ◽  
Hai Hu ◽  
T.-H. Chung ◽  
Jian Qin ◽  
Xiaoxia Yang ◽  
...  

Physics World ◽  
2006 ◽  
Vol 19 (4) ◽  
pp. 4-4
Keyword(s):  

Physics ◽  
2018 ◽  
Vol 11 ◽  
Author(s):  
Anonymous

2020 ◽  
Vol 35 (21) ◽  
pp. 2050178
Author(s):  
Yu-Guang Yang ◽  
Sheng-Nan Cao ◽  
Yi-Hua Zhou ◽  
Wei-Min Shi

Due to the high security of quantum transmission and the more flexible and economical implementation of wireless communication, quantum wireless network communication attracts lots of attention. Because of the high entanglement persistence and robustness of cluster states against decoherence and loss, we investigate the application of cluster states in quantum wireless network communication (QWNC) and propose several kinds of QWNC schemes based on 1D, 2D and 3D cluster states, respectively. Finally we propose a QWNC scheme under the bilayer quantum network architecture. Comparing with other multi-hop teleportation schemes, it is unnecessary for the intermediate nodes to perform entanglement swapping to establish the required entanglement. The computational complexity is independent of the number of intermediate nodes and cluster states are allocated on demand, thus reducing the computational complexity and resource consumption largely.


Author(s):  
R. J. Young ◽  
R. M. Stevenson ◽  
P. Atkinson ◽  
K. Cooper ◽  
D. A. Ritchie ◽  
...  

2021 ◽  
Vol 7 (12) ◽  
pp. eabe6379
Author(s):  
Francesco Basso Basset ◽  
Mauro Valeri ◽  
Emanuele Roccia ◽  
Valerio Muredda ◽  
Davide Poderini ◽  
...  

Quantum key distribution—exchanging a random secret key relying on a quantum mechanical resource—is the core feature of secure quantum networks. Entanglement-based protocols offer additional layers of security and scale favorably with quantum repeaters, but the stringent requirements set on the photon source have made their use situational so far. Semiconductor-based quantum emitters are a promising solution in this scenario, ensuring on-demand generation of near-unity-fidelity entangled photons with record-low multiphoton emission, the latter feature countering some of the best eavesdropping attacks. Here, we use a coherently driven quantum dot to experimentally demonstrate a modified Ekert quantum key distribution protocol with two quantum channel approaches: both a 250-m-long single-mode fiber and in free space, connecting two buildings within the campus of Sapienza University in Rome. Our field study highlights that quantum-dot entangled photon sources are ready to go beyond laboratory experiments, thus opening the way to real-life quantum communication.


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