A laser source driver with adjustable amplitude and pulse-width in 130-nm CMOS technology for quantum key distribution experiments

Feng, Bo; Liang, Futian; Wang, Xinzhe; Zhu, Chenxi; Zhu, Yulong; Jin, G.

doi:10.1063/1.5100318

Cited by 7 publications

(1 citation statement)

References 10 publications

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“…For the driving of LD, an electrical signal with adjustable width and amplitude is used to generate the optical pulse with the required width and intensity [19]. This function is implemented with a DAC combined with an LA [20].The front controller outputs the required data to the DAC, and the clock of DAC is controlled by the ARM to ensure that the optical pulses are generated in a suitable time slot. The chip is designed with a driving signal frequency of 50 MHz, adjustable up to 500 mV and with a step size of 3.125 mV, to drive different types of LD.…”

Section: Electrical Structure Of Qkd Systemmentioning

confidence: 99%

Chip-Based Electronic System for Quantum Key Distribution

Zhang,

Mao,

Luo

et al. 2024

Entropy

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Quantum Key Distribution (QKD) has garnered significant attention due to its unconditional security based on the fundamental principles of quantum mechanics. While QKD has been demonstrated by various groups and commercial QKD products are available, the development of a fully chip-based QKD system, aimed at reducing costs, size, and power consumption, remains a significant technological challenge. Most researchers focus on the optical aspects, leaving the integration of the electronic components largely unexplored. In this paper, we present the design of a fully integrated electrical control chip for QKD applications. The chip, fabricated using 28 nm CMOS technology, comprises five main modules: an ARM processor for digital signal processing, delay cells for timing synchronization, ADC for sampling analog signals from monitors, OPAMP for signal amplification, and DAC for generating the required voltage for phase or intensity modulators. According to the simulations, the minimum delay is 11ps, the open-loop gain of the operational amplifier is 86.2 dB, the sampling rate of the ADC reaches 50 MHz, and the DAC achieves a high rate of 100 MHz. To the best of our knowledge, this marks the first design and evaluation of a fully integrated driver chip for QKD, holding the potential to significantly enhance QKD system performance. Thus, we believe our work could inspire future investigations toward the development of more efficient and reliable QKD systems.

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Section: Electrical Structure Of Qkd Systemmentioning

confidence: 99%

Chip-Based Electronic System for Quantum Key Distribution

Zhang,

Mao,

Luo

et al. 2024

Entropy

View full text Add to dashboard Cite

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Integrated electronics in 130 nm CMOS process for quantum key distribution sender device

Wang

Liang

Feng

et al. 2020

Review of Scientific Instruments

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Quantum Key Distribution (QKD) is the most mature method for implementing commercial quantum communications in practice. As part of the miniaturization of practical QKD devices, an integrated electronic system in the 130 nm complementary metal oxide semiconductor process is presented for the QKD sender device. The electronics provide driving signals for the optics at the sender terminal of the quantum channel in QKD and consist mainly of three key modules, namely, a laser diode driver with a high slew rate, a high-speed physical random number generator, and a pre-driver for the electro-optic modulator. The electronic system is designed to operate at frequencies as high as 625-MHz to accommodate the frequency of the QKD system. The high degree of integration is advantageous for miniaturizing QKD sender devices.

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A field-programmable-gate-array based high time resolution arbitrary timing generator with a time folding method utilizing multiple carry-chains

Wang

Tong

Qin

et al. 2021

Review of Scientific Instruments

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A carry-chain based high time resolution arbitrary timing generator, which is fully implemented using field-programmable-gate-array resources, is reported in this paper. The arbitrary timing generator channel operates with two alternative carry-chains to achieve non-dead-time timing sequence generation, and a 45.3 ps time resolution with a 383 ps minimum pulse width can be obtained. The time resolution is further improved to 11.3 ps by employing four parallel carry-chains in a single arbitrary timing generator channel to realize “time folding.” The timing generator has a high time stability, and the time uncertainty is below 12 ps within a wide time range of 1 ns–108 ns. The arbitrary timing generator can be used to generate continuous spike timing sequences with a picosecond time resolution.

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A laser source driver with adjustable amplitude and pulse-width in 130-nm CMOS technology for quantum key distribution experiments

Cited by 7 publications

References 10 publications

Chip-Based Electronic System for Quantum Key Distribution

Chip-Based Electronic System for Quantum Key Distribution

Integrated electronics in 130 nm CMOS process for quantum key distribution sender device

A field-programmable-gate-array based high time resolution arbitrary timing generator with a time folding method utilizing multiple carry-chains

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