scholarly journals High-rate measurement-device-independent quantum cryptography

2015 ◽  
Vol 9 (6) ◽  
pp. 397-402 ◽  
Author(s):  
Stefano Pirandola ◽  
Carlo Ottaviani ◽  
Gaetana Spedalieri ◽  
Christian Weedbrook ◽  
Samuel L. Braunstein ◽  
...  
Keyword(s):  
Quantum Cryptography ◽  
High Rate ◽  
Rate Measurement ◽  
Measurement Device ◽  
Measurement Device Independent

Effective measurement-device-independent quantum cryptography

SPIE Newsroom ◽  
2015 ◽  
Author(s):  
Ulrik L. Andersen ◽  
Tobias Gehring ◽  
Christian S. Jacobsen ◽  
Stefano Pirandola
Keyword(s):  
Quantum Cryptography ◽  
Measurement Device ◽  
Measurement Device Independent

scholarly journals Autocompensating Measurement-Device-Independent quantum cryptography in few-mode optical fibers

2020 ◽  
Vol 238 ◽  
pp. 09002
Author(s):  
Jesús Liñares-Beiras ◽  
Xesús Prieto-Blanco ◽  
Daniel Balado ◽  
Gabriel M. Carral
Keyword(s):  
Optical Fiber ◽  
Quantum Cryptography ◽  
Optical Fibers ◽  
Measurement Device ◽  
Optical Components ◽  
Spatial Modes ◽  
Fiber Modes ◽  
Measurement Device Independent

We present an autocompensating quantum cryptography technique for Measurement-Device-Independent quantum cryptography devices with different kind of optical fiber modes. We center our study on collinear spatial modes in few-mode optical fibers by using both fiber and micro-optical components. We also indicate how the obtained results can be easily extended to polarization modes in monomode optical fibers and spatial codirectional modes in multicore optical fibers.

scholarly journals Discrete and continuous variables for measurement-device-independent quantum cryptography

2015 ◽  
Vol 9 (12) ◽  
pp. 772-773 ◽  
Author(s):  
Feihu Xu ◽  
Marcos Curty ◽  
Bing Qi ◽  
Li Qian ◽  
Hoi-Kwong Lo
Keyword(s):  
Quantum Cryptography ◽  
Continuous Variables ◽  
Measurement Device ◽  
Measurement Device Independent

scholarly journals Reply to 'Discrete and continuous variables for measurement-device-independent quantum cryptography'

2015 ◽  
Vol 9 (12) ◽  
pp. 773-775 ◽  
Author(s):  
Stefano Pirandola ◽  
Carlo Ottaviani ◽  
Gaetana Spedalieri ◽  
Christian Weedbrook ◽  
Samuel L. Braunstein ◽  
...  
Keyword(s):  
Quantum Cryptography ◽  
Continuous Variables ◽  
Measurement Device ◽  
Measurement Device Independent

scholarly journals Measurement-Device-Independent Quantum Cryptography

2015 ◽  
Vol 21 (3) ◽  
pp. 148-158 ◽  
Author(s):  
Feihu Xu ◽  
Marcos Curty ◽  
Bing Qi ◽  
Hoi-Kwong Lo
Keyword(s):  
Quantum Cryptography ◽  
Measurement Device ◽  
Measurement Device Independent

scholarly journals Modular network for high-rate quantum conferencing

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Carlo Ottaviani ◽  
Cosmo Lupo ◽  
Riccardo Laurenza ◽  
Stefano Pirandola
Keyword(s):  
Modular Design ◽  
Continuous Variable ◽  
High Rate ◽  
Measurement Device ◽  
Open Problems ◽  
Optical Components ◽  
Star Network ◽  
Constant Rate ◽  
Individual Module ◽  
Measurement Device Independent

Abstract One of the main open problems in quantum communication is the design of efficient quantum-secured networks. This is a challenging goal, because it requires protocols that guarantee both unconditional security and high communication rates, while increasing the number of users. In this scenario, continuous-variable systems provide an ideal platform where high rates can be achieved by using off-the-shelf optical components. At the same time, the measurement-device independent architecture is also appealing for its feature of removing a substantial portion of practical weaknesses. Driven by these ideas, here we introduce a modular design of continuous-variable network where each individual module is a measurement-device-independent star network. In each module, the users send modulated coherent states to an untrusted relay, creating multipartite secret correlations via a generalized Bell detection. Using one-time pad between different modules, the network users may share a quantum-secure conference key over arbitrary distances at constant rate.

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