.png){kind=icon}
.png){kind=icon}
Return
Fully Integrated Vacuum-Based Quantum Random Number Generator
.png){kind=icon}
PRE
AI
DOI：10.34133/adi.0147.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Quantum random number generators play a crucial role in securing high-demand information contexts by producing true random numbers. Nevertheless, the large volume and high cost limit their widespread use. Here, we propose a system on-chip that fully leverages the advantages of different photonic integrated platforms, where the interference optical paths and photodiodes are integrated on a standard silicon process, while the laser source on-chip is realized on a III-V platform. Using micro-lens coupling package technology, which contributes to a topnotch coupling loss lower than 2 dB, the components on different platforms are combined and packaged with the amplifier circuits in a 42 mm x 24 mm footprint in a butterfly form. This complete miniaturized and cost-effective entropy source enables outputting a vacuum noise signal with a 3-dB bandwidth of over 500 MHz. After sampling and post-processing, a random number generation rate of up to 6.57 Gbps is achieved. The results show a feasible way of overcoming the laser integration problem with silicon-based integrated quantum photonics. Foreseeable, commercial applications on a large scale are substantially promoted.
Keywords:
KEY DISTRIBUTION
HIGH-SPEED
Journal
A
IF:
0
Papers:
21
Citations:
0