scholarly journals High-dimensional entanglement for long distance quantum communication

2011 ◽  
Vol 60 (6) ◽  
pp. 060308
Author(s):  
Yin Juan ◽  
Qian Yong ◽  
Li Xiao-Qiang ◽  
Bao Xiao-Hui ◽  
Peng Cheng-Zhi ◽  
...  
Keyword(s):  
Quantum Communication ◽  
High Dimensional ◽  
Long Distance

scholarly journals Path-encoded high-dimensional quantum communication over a 2-km multicore fiber

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Beatrice Da Lio ◽  
Daniele Cozzolino ◽  
Nicola Biagi ◽  
Yunhong Ding ◽  
Karsten Rottwitt ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Communication ◽  
Error Rates ◽  
Quantum States ◽  
High Dimensional ◽  
Secret Key ◽  
System A ◽  
Reliable Transmission ◽  
Multicore Fiber ◽  
Interferometric Detection

AbstractQuantum key distribution (QKD) protocols based on high-dimensional quantum states have shown the route to increase the key rate generation while benefiting of enhanced error tolerance, thus overcoming the limitations of two-dimensional QKD protocols. Nonetheless, the reliable transmission through fiber links of high-dimensional quantum states remains an open challenge that must be addressed to boost their application. Here, we demonstrate the reliable transmission over a 2-km-long multicore fiber of path-encoded high-dimensional quantum states. Leveraging on a phase-locked loop system, a stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of a secret key rate.

scholarly journals Long Distance Quantum Communication with Atomic Ensembles

2007 ◽  
pp. 553-580
Author(s):  
C. W. Chou ◽  
S. V. Polyakov ◽  
D. Felinto ◽  
H. de Riedmatten ◽  
S. J. van Enk ◽  
...  
Keyword(s):  
Quantum Communication ◽  
Atomic Ensembles ◽  
Long Distance

Optimized architectures for long distance quantum communication

2017 ◽  
Author(s):  
Linshu Li ◽  
Sreraman Muralidharan ◽  
Chang-Ling Zou ◽  
Victor V. Albert ◽  
Jungsang Kim ◽  
...  
Keyword(s):  
Quantum Communication ◽  
Long Distance

Long-distance quantum communication just around the corner?

2001 ◽  
Vol 1 (3) ◽  
pp. 87-88
Author(s):  
P Kok ◽  
H Lee ◽  
N Cerf ◽  
J Dowling
Keyword(s):  
Quantum Communication ◽  
Long Distance

Perspective

Long distance two-party quantum crypto made simple

2012 ◽  
Vol 12 (5&6) ◽  
pp. 448-460
Author(s):  
Iordanis Kerenidis ◽  
Stephanie Wehner
Keyword(s):  
Quantum Communication ◽  
Oblivious Transfer ◽  
Difficult Problem ◽  
Entanglement Swapping ◽  
Quantum States ◽  
Large Network ◽  
Long Distance ◽  
Computational Problem ◽  
Cryptographic Primitive

Any two-party cryptographic primitive can be implemented using quantum communication under the assumption that it is difficult to store a large number of quantum states perfectly. However, achieving reliable quantum communication over long distances remains a difficult problem. Here, we consider a large network of nodes with only neighboring quantum links. We exploit properties of this cloud of nodes to enable any two nodes to achieve security even if they are not directly connected. Our results are based on techniques from classical cryptography and do not resort to technologically difficult procedures like entanglement swapping. More precisely, we show that oblivious transfer can be achieved in such a network if and only if there exists a path in the network between the sender and the receiver along which all nodes are honest. Finally, we show that useful notions of security can still be achieved when we relax the assumption of an honest path. For example, we show that we can combine our protocol for oblivious transfer with computational assumptions such that we obtain security if either there exists an honest path, or, as a backup, at least the adversary cannot solve a computational problem.

scholarly journals Optimal architectures for long distance quantum communication

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Sreraman Muralidharan ◽  
Linshu Li ◽  
Jungsang Kim ◽  
Norbert Lütkenhaus ◽  
Mikhail D. Lukin ◽  
...  
Keyword(s):  
Quantum Communication ◽  
Long Distance

scholarly journals High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

2019 ◽  
Vol 2 (12) ◽  
pp. 1900038 ◽  
Author(s):  
Daniele Cozzolino ◽  
Beatrice Da Lio ◽  
Davide Bacco ◽  
Leif Katsuo Oxenløwe
Keyword(s):  
Quantum Communication ◽  
High Dimensional ◽  
Future Challenges
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