scholarly journals High Capacity Quantum Key Distribution Based on Single-Photon in Polarization and Spatial-Mode Degrees of Freedom Against Collective Noise

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 226538-226543
Author(s):  
Ruitong Zhao ◽  
Jianjun Guo ◽  
Lianglun Cheng
Keyword(s):  
Quantum Key Distribution ◽  
Degrees Of Freedom ◽  
Single Photon ◽  
High Capacity ◽  
Key Distribution ◽  
Collective Noise ◽  
Spatial Mode

High-dimensional quantum key distribution using polarization-phase encoding: security analysis

2020 ◽  
Vol 18 (06) ◽  
pp. 2050031
Author(s):  
Ali Mehri-Toonabi ◽  
Mahdi Davoudi Darareh ◽  
Shahrooz Janbaz
Keyword(s):  
Quantum Key Distribution ◽  
Degrees Of Freedom ◽  
Single Photon ◽  
Transmission Rate ◽  
Security Analysis ◽  
Key Distribution ◽  
High Dimensional ◽  
Effective Transmission ◽  
Special Case ◽  
Polarization Phase

In this work, we introduce a high-dimensional polarization-phase (PoP)-based quantum key distribution protocol, briefly named PoP[Formula: see text], where [Formula: see text] is the dimension of a hybrid quantum state including polarization and phase degrees of freedom of the same photon, and [Formula: see text] is the number of mutually unbiased bases. We present a detailed description of the PoP[Formula: see text] protocol as a special case, and evaluate its security against various individual and coherent eavesdropping strategies, and in each case, we compare it with the BB84 and the two-dimensional (TD)-PoP protocols. In all the strategies, the error threshold and the effective transmission rate of the PoP[Formula: see text] protocol are far greater than the other two protocols. Unlike most high-dimensional protocols, the simplicity of producing and detecting the qudits and the use of conventional components (such as traditional single-photon sources and quantum channels) are among the features of the PoP[Formula: see text] protocol.

scholarly journals FAULT TOLERANT QUANTUM KEY DISTRIBUTION BASED ON QUANTUM DENSE CODING WITH COLLECTIVE NOISE

2009 ◽  
Vol 07 (08) ◽  
pp. 1479-1489 ◽  
Author(s):  
XI-HAN LI ◽  
BAO-KUI ZHAO ◽  
YU-BO SHENG ◽  
FU-GUO DENG ◽  
HONG-YU ZHOU
Keyword(s):  
Quantum Key Distribution ◽  
Fault Tolerant ◽  
Single Photon ◽  
Bell State ◽  
Key Distribution ◽  
Secret Message ◽  
Noisy Channel ◽  
Collective Noise ◽  
Dense Coding ◽  
Quantum Dense Coding

We present two robust quantum key distribution protocols against two kinds of collective noise, following some ideas in quantum dense coding. Three-qubit entangled states are used as quantum information carriers, two of which form the logical qubit, which is invariant with a special type of collective noise. The information is encoded on logical qubits with four unitary operations, which can be read out faithfully with Bell-state analysis on two physical qubits and a single-photon measurement on the other physical qubit, not three-photon joint measurements. Two bits of information are exchanged faithfully and securely by transmitting two physical qubits through a noisy channel. When the losses in the noisy channel is low, these protocols can be used to transmit a secret message directly in principle.

Semi-quantum key distribution protocol based on the hyperentanglement Bell state of polarization-spatial mode

2020 ◽  
Vol 34 (31) ◽  
pp. 2050353
Author(s):  
Ling Xu
Keyword(s):  
Quantum Key Distribution ◽  
High Capacity ◽  
Bell State ◽  
Key Distribution ◽  
Degree Of Freedom ◽  
Bell States ◽  
Spatial Mode ◽  
Security Systems ◽  
State Of Polarization ◽  
Quantum Key Distribution Protocol

The semi-quantum key distribution protocol based on the hyperentanglement Bell state of polarization-spatial mode is presented in this paper. This protocol is utilized to share the session keys and construct key hierarchy of security systems in high capacity between the legitimate users securely. Different from the previous protocols, two quantum non-demolition detectors are constructed with cross-Kerr nonlinearities and different phase shifts for distinguishing the Bell states in spatial mode degree of freedom. Meanwhile, this protocol can improve the capacity and efficiency when the legitimate users share the session keys. And the technology of the hyperentanglement purification and hyperentanglement concentration can enhance the robustness and stability of this protocol. At last, this protocol proposed in this paper can withstand several kinds of attacks.

FAULT-TOLERATE QUANTUM KEY DISTRIBUTION OVER A COLLECTIVE-NOISE CHANNEL

2010 ◽  
Vol 08 (07) ◽  
pp. 1101-1109 ◽  
Author(s):  
CHUN-YAN LI ◽  
YAN-SONG LI
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Bell State ◽  
Key Distribution ◽  
Quantum Systems ◽  
Collective Noise ◽  
Two Photon ◽  
Intrinsic Efficiency ◽  
Decoherence Free Subspace ◽  
Bell State Measurements

We present two quantum key distribution (QKD) schemes over a collective-noise channel. Each logical qubit, composed of two physical qubits with a decoherence-free subspace, is immune to a collective noise and can carry one bit of information in theory. Although the receiver should prepare entangled two-photon quantum systems, he can read out the information encoded by the sender with two unitary operations on two photons, resorting to only two single-photon measurements, not Bell-state measurements, which makes these protocols simpler than others in experiment. These two QKD protocols are deterministic, not random, which makes the classical information exchanged be reduced largely. Also, they have a high intrinsic efficiency.

scholarly journals Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding

Entropy ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 80 ◽  
Author(s):  
Yonggi Jo ◽  
Hee Park ◽  
Seung-Woo Lee ◽  
Wonmin Son
Keyword(s):  
Angular Momentum ◽  
Quantum Key Distribution ◽  
Degrees Of Freedom ◽  
Single Photon ◽  
Key Distribution ◽  
Quantum States ◽  
High Dimensional ◽  
Practical Implementation ◽  
Secret Key ◽  
Optical Elements

We propose a schematic setup of quantum key distribution (QKD) with an improved secret key rate based on high-dimensional quantum states. Two degrees-of-freedom of a single photon, orbital angular momentum modes, and multi-path modes, are used to encode secret key information. Its practical implementation consists of optical elements that are within the reach of current technologies such as a multiport interferometer. We show that the proposed feasible protocol has improved the secret key rate with much sophistication compared to the previous 2-dimensional protocol known as the detector-device-independent QKD.

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