Towards high-dimensional quantum communication in space (Conference Presentation)

2018 ◽  
Author(s):  
Fabian Steinlechner
Keyword(s):  
Quantum Communication ◽  
High Dimensional

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 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

scholarly journals High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (Adv. Quantum Technol. 12/2019)

2019 ◽  
Vol 2 (12) ◽  
pp. 1970073 ◽  
Author(s):  
Daniele Cozzolino ◽  
Beatrice Da Lio ◽  
Davide Bacco ◽  
Leif Katsuo Oxenløwe
Keyword(s):  
Quantum Communication ◽  
High Dimensional ◽  
Future Challenges

High-Dimensional Quantum Communication Using Space Encoding

2019 ◽  
Author(s):  
Davide Bacco ◽  
Daniele Cozzolino ◽  
Beatrice Da Lio ◽  
Yunhong Ding ◽  
Kasper Ingerslev ◽  
...  
Keyword(s):  
Quantum Communication ◽  
High Dimensional ◽  
Space Encoding

scholarly journals High-Dimensional Quantum Communication Complexity beyond Strategies Based on Bell’s Theorem

2018 ◽  
Vol 121 (15) ◽  
Author(s):  
Daniel Martínez ◽  
Armin Tavakoli ◽  
Mauricio Casanova ◽  
Gustavo Cañas ◽  
Breno Marques ◽  
...  
Keyword(s):  
Communication Complexity ◽  
Quantum Communication ◽  
Bell’S Theorem ◽  
High Dimensional ◽  
Bell's Theorem ◽  
Quantum Communication Complexity

scholarly journals Quantum process tomography of a high-dimensional quantum communication channel

Quantum ◽  
2019 ◽  
Vol 3 ◽  
pp. 138 ◽  
Author(s):  
Frédéric Bouchard ◽  
Felix Hufnagel ◽  
Dominik Koutný ◽  
Aazad Abbas ◽  
Alicia Sit ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Communication ◽  
Communication Channels ◽  
Key Distribution ◽  
Coarse Grained ◽  
High Dimensional ◽  
Quantum Process ◽  
Quantum Process Tomography ◽  
Process Tomography

The characterization of quantum processes, e.g. communication channels, is an essential ingredient for establishing quantum information systems. For quantum key distribution protocols, the amount of overall noise in the channel determines the rate at which secret bits are distributed between authorized partners. In particular, tomographic protocols allow for the full reconstruction, and thus characterization, of the channel. Here, we perform quantum process tomography of high-dimensional quantum communication channels with dimensions ranging from 2 to 5. We can thus explicitly demonstrate the effect of an eavesdropper performing an optimal cloning attack or an intercept-resend attack during a quantum cryptographic protocol. Moreover, our study shows that quantum process tomography enables a more detailed understanding of the channel conditions compared to a coarse-grained measure, such as quantum bit error rates. This full characterization technique allows us to optimize the performance of quantum key distribution under asymmetric experimental conditions, which is particularly useful when considering high-dimensional encoding schemes.

scholarly journals Orbital Angular Momentum States Enabling Fiber-based High-dimensional Quantum Communication

2019 ◽  
Vol 11 (6) ◽  
Author(s):  
Daniele Cozzolino ◽  
Davide Bacco ◽  
Beatrice Da Lio ◽  
Kasper Ingerslev ◽  
Yunhong Ding ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Quantum Communication ◽  
High Dimensional

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
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