YD/T 6708.2-2026Key components and modules for Quantum Key Distribution (QKD) based on Gaussian modulation coherent protocol - Part 2: coherent detector (English PDF)
基于高斯调制相干态协议的量子密钥分发（QKD）用关键器件和模块 第2部分：相干探测器
Also coversYD/T6708.2-2026 + YDT6708.2-2026
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Issued by
Ministry of Industry and Information Technology
Level / Type
Industry · Recommended
Issue date
March 11, 2026
Implementation date
June 1, 2026
Scope
YD/T 6708.2-2026 is the English-translated version of 基于高斯调制相干态协议的量子密钥分发（QKD）用关键器件和模块 第2部分：相干探测器.
This part of the YD/T 6708 series covers the coherent detector used in quantum key distribution (QKD) systems based on the Gaussian modulation coherent state protocol. It defines the terms and definitions for the detector and specifies technical requirements including the photoelectric characteristics, reliability and restricted substances. It describes the corresponding test methods and sets requirements for inspection rules, marking, packaging, transport and storage. It applies to the design, development, production and testing of coherent detectors for Gaussian modulation coherent state QKD systems that transmit over optical fibre channels.
Detector manufacturers, QKD equipment integrators, test laboratories and purchasers of QKD modules are the intended users. It is a voluntary industry standard (code with /T) of the communications sector, approved by the Ministry of Industry and Information Technology. It was issued on 11 March 2026 and takes effect on 1 June 2026. It is a new standard and replaces no earlier edition.
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Document preview — YD/T 6708.2-2026
National Standard of the People's Republic of China
- ICS
- 33.060.20
- Classification
- M33
Issued by: Ministry of Industry and Information Technology
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
Foreword
YD/T 6708.2-2026 is a recommended industry standard of the People's Republic of China in the Telecom sector, approved and issued by the Ministry of Industry and Information Technology on 11 March 2026, with effect from 1 June 2026.
It is administered by the China Communications Standards Association.
Classification: ICS 33.060.20; CCS M33.
1 Scope
This part of the YD/T 6708 series covers the coherent detector used in quantum key distribution (QKD) systems based on the Gaussian modulation coherent state protocol. It defines the terms and definitions for the detector and specifies technical requirements including the photoelectric characteristics, reliability and restricted substances. It describes the corresponding test methods and sets requirements for inspection rules, marking, packaging, transport and storage. It applies to the design, development, production and testing of coherent detectors for Gaussian modulation coherent state QKD systems that transmit over optical fibre channels.
Detector manufacturers, QKD equipment integrators, test laboratories and purchasers of QKD modules are the intended users. It is a voluntary industry standard (code with /T) of the communications sector, approved by the Ministry of Industry and Information Technology. It was issued on 11 March 2026 and takes effect on 1 June 2026. It is a new standard and replaces no earlier edition.
Remaining clauses in the full document
- 2 Normative references
- 3 Terms and definitions
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 26 pages — is available in the English PDF.
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