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MIMO Terahertz Quantum Key Distribution
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DOI：10.1109/LCOMM.2021.3102703.png)
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摘要
En 中文
We propose a multiple-input multiple-output (MIMO) quantum key distribution (QKD) scheme for terahertz (THz) frequency applications operating at room temperature. Motivated by classical MIMO communications, a transmit-receive beamforming scheme is proposed that converts the rank-r MIMO channel between Alice and Bob into r parallel lossy quantum channels. Compared with existing single-antenna QKD schemes, we demonstrate that the MIMO QKD scheme leads to performance improvements by increasing the secret key rate and extending the transmission distance. Our simulation results show that multiple antennas are necessary to overcome the high free-space path loss at THz frequencies. We demonstrate a non-monotonic relation between performance and frequency, and reveal that positive key rates are achievable in the 10 - 30 THz frequency range. The proposed scheme can be used for both indoor and outdoor QKD applications for beyond fifth generation ultra-secure wireless communications systems.
Keyword:
MIMO communication
Atmospheric modeling
Propagation losses
Transmitting antennas
Quantum key distribution
Protocols
Oscillators
Quantum key distribution
MIMO
B5G
THz
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期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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引用论文
Predicting Atmospheric Attenuation Under Pristine Conditions Between 0.1 and 100 THz.png)
IEEE ACCESSOAAI
IEEE ACCESSIF3.6
OAAI分享收藏Indoor channel modeling for continuous variable quantum key distribution in the terahertz bandOPTICS EXPRESS
OAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏
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