Performance limits for single-photons, correlated-photons, and entangled photons for quantum key distribution over fiber optics network topologies

The overview of the current status of quantum cryptography is given in regard to quantum key distribution (QKD) protocols, implemented both on nonentangled and entangled flying qubits. Two commercial R&D platforms of QKD systems are described (the Clavis II platform by idQuantique implemented on nonentangled photons and the EPR S405 Quelle platform by AIT based on entangled photons) and tested for feasibility of their usage in commercial TELECOM fiber metropolitan networks. The comparison of systems efficiency, stability and resistivity against noise and hacker attacks is given with some suggestion toward system improvement, along with assessment of two models of QKD.

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Cryptanalysis of a Practical Quantum Key Distribution with Polarization-Entangled Photons

Quantum Information and Computation ◽

10.26421/qic5.3-1 ◽

2005 ◽

Vol 5 (3) ◽

pp. 181-186

Author(s):

Th. Beth ◽

J. Muller-Quade ◽

R. Steinwandt

Keyword(s):

Quantum Cryptography ◽

Quantum Key Distribution ◽

Key Distribution ◽

Key Exchange ◽

Authentication Scheme ◽

Entangled Photons ◽

Key Exchange Protocol

Recently, a quantum key exchange protocol has been described\cite{PFLM04}, which served as basis for securing an actual bank transaction by means of quantum cryptography \cite{ZVS04}. The authentication scheme used to this aim has been proposed by Peev et al. \cite{PML04}. Here we show, that this authentication is insecure in the sense that an attacker can provoke a situation where initiator and responder of a key exchange end up with different keys. Moreover, it may happen that an attacker can decrypt a part of the plaintext protected with the derived encryption key.

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Chaotic Quantum Key Distribution

Cryptography ◽

10.3390/cryptography4030024 ◽

2020 ◽

Vol 4 (3) ◽

pp. 24

Author(s):

Noah Cowper ◽

Harry Shaw ◽

David Thayer

Keyword(s):

Quantum Computing ◽

Quantum Key Distribution ◽

Single Photon ◽

Photon Emission ◽

Key Distribution ◽

Maximum Amount ◽

Single Photons ◽

Single Photon Emission ◽

Amount Of Information ◽

Communication Scheme

The ability to send information securely is a vital aspect of today’s society, and with the developments in quantum computing, new ways to communicate have to be researched. We explored a novel application of quantum key distribution (QKD) and synchronized chaos which was utilized to mask a transmitted message. This communication scheme is not hampered by the ability to send single photons and consequently is not vulnerable to number splitting attacks like other QKD schemes that rely on single photon emission. This was shown by an eavesdropper gaining a maximum amount of information on the key during the first setup and listening to the key reconciliation to gain more information. We proved that there is a maximum amount of information an eavesdropper can gain during the communication, and this is insufficient to decode the message.

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Quantum key distribution limits by using multichannel spectral- space scheme and entangled photons in optical fibers

2013 15th International Conference on Transparent Optical Networks (ICTON) ◽

10.1109/icton.2013.6602940 ◽

2013 ◽

Cited By ~ 1

Author(s):

Milorad Cvijetic ◽

Ivan B. Djordjevic ◽

Akihiro Tanaka

Keyword(s):

Optical Fibers ◽

Quantum Key Distribution ◽

Key Distribution ◽

Spectral Space ◽

Entangled Photons ◽

Distribution Limits

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Experimental investigation of high-dimensional quantum key distribution protocols with twisted photons

Quantum ◽

10.22331/q-2018-12-04-111 ◽

2018 ◽

Vol 2 ◽

pp. 111 ◽

Cited By ~ 23

Author(s):

Frédéric Bouchard ◽

Khabat Heshami ◽

Duncan England ◽

Robert Fickler ◽

Robert W. Boyd ◽

...

Keyword(s):

Quantum Key Distribution ◽

Key Distribution ◽

High Dimensional ◽

Multiple Quantum ◽

Single Photons ◽

Experimental Conditions ◽

Differential Phase Shift ◽

Secure Information ◽

Experimental Apparatus ◽

First Time

Quantum key distribution is on the verge of real world applications, where perfectly secure information can be distributed among multiple parties. Several quantum cryptographic protocols have been theoretically proposed and independently realized in different experimental conditions. Here, we develop an experimental platform based on high-dimensional orbital angular momentum states of single photons that enables implementation of multiple quantum key distribution protocols with a single experimental apparatus. Our versatile approach allows us to experimentally survey different classes of quantum key distribution techniques, such as the 1984 Bennett & Brassard (BB84), tomographic protocols including the six-state and the Singapore protocol, and to investigate, for the first time, a recently introduced differential phase shift (Chau15) protocol using twisted photons. This enables us to experimentally compare the performance of these techniques and discuss their benefits and deficiencies in terms of noise tolerance in different dimensions.

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