Simultaneous transmission of information and key exchange using the same photonic quantum states
Data files
Feb 06, 2025 version files 25.79 KB
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Fig2.m
1.10 KB
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Fig2.xlsx
17.01 KB
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Fig3.m
2.65 KB
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h.m
98 B
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QBER_168h.txt
1.18 KB
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Rate_168h.txt
1.17 KB
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README.md
2.58 KB
Abstract
Quantum communication realizes information-theoretic security using photonic quantum states, for example, quantum secure direct communication (QSDC), which can achieve secure and reliable communication in a channel with both noise and eavesdroppers. However, QSDC suffers from large losses and short communication distances, thus being impractical for applications. Here, we have proposed a one-way quasi-QSDC protocol with single photons. This protocol enables the simultaneous transmission of information and key exchange using the same single photons and is robust against loss and error because it uses error correction and spectrum expansion techniques. In a proof-of-principle demonstration using weak coherent pulses, the system achieved a real-time secure transmission rate of 2.38 kilobits per second over a 104.8-km standard telecommunication fiber, which set world records in both aspects. This system paved the way for the practical application of QSDC and offers a unique method to detect eavesdropping online, which is crucial in certain circumstances.
https://doi.org/10.5061/dryad.n2z34tn70
Description of the data and file structure
The Source Data for Figures 2 and 3 in "Simultaneous transmission of information and key exchange using the same photonic quantum states"
- Fig2.xlsx: This file contains comprehensive data on the communication rate and quantum bit error rate (QBER), gathered over a continuous 168-hour period during the operation of a prototype system implementing the STIKE protocol.
- Rate_168h.txt: This text file specifically holds data on the communication rate, recorded continuously for 168 hours during the operation of a prototype system that executed the STIKE protocol.
- QBER_168h.txt: This text file contains detailed data on the quantum bit error rate (QBER), collected over a continuous 168-hour span during the operation of a prototype system implementing the STIKE protocol.
Files and variables
File: Fig2.m
Description: The Matlab code utilized to generate Figure 2, leveraging the data from Rate_168h.txt and QBER_168h.txt.
File: Fig2.xlsx
Description: This file contains comprehensive data on the communication rate and quantum bit error rate (QBER), gathered over a continuous 168-hour period during the operation of a prototype system implementing the STIKE protocol.
File: Fig3.m
Description: It was utilized for the performance analysis of the secrecy capacity in the STIKE protocol, resulting in the generation of Figure 3. This figure encompasses our experimental communication rate results alongside simulations of the secrecy capacity and reliable communication bound of the protocol using the two-decoy state method and Wyner’s wiretap channel theory.
File: h.m
Description: Matlab function for the binary Shannon information function.
File: QBER_168h.txt
Description: This text file contains detailed data on the quantum bit error rate (QBER), collected over a continuous 168-hour span during the operation of a prototype system implementing the STIKE protocol.
File: Rate_168h.txt
Description: This text file specifically holds data on the communication rate, recorded continuously for 168 hours during the operation of a prototype system that executed the STIKE protocol.
Code/software
Software: Matlab
Access information
Other publicly accessible locations of the data:
- No
Data was derived from the following sources:
- No
To demonstrate the feasibility of the proposed STIKE protocol, we completed a proof-of-principle demonstration experiment. We constructed a Faraday-Michelson system to run the STIKE protocol. The communication distance between Alice and Bob was 104.8 km, utilizing standard telecommunication fiber that exhibited a loss of 0.2 dB/km.
We conducted a 168-hour test of the communication rate and quantum bit error rate (QBER) of the system, with the data summarized in Fig2.xlsx. The communication rate and QBER data are also separately available in Rate_168h.txt and QBER_168h.txt, respectively, facilitating the plotting of temporal trends in both metrics using the Matlab script Fig.m, corresponding to Figure 2 in the paper. Additionally, Matlab scripts Fig3.m and h.m were utilized for the performance analysis of the secrecy capacity in the STIKE protocol, resulting in the generation of Figure 3. This figure encompasses our experimental communication rate results alongside simulations of the secrecy capacity and reliable communication bound of the protocol using the two-decoy state method and wire-tap channel theory.