期刊
NATURE ELECTRONICS
卷 5, 期 9, 页码 604-610出版社
NATURE PORTFOLIO
DOI: 10.1038/s41928-022-00823-w
关键词
-
资金
- Air Force Office of Scientific Research [FA9550-21-1-0042]
- Army Research Office [W911NF-19-C-0060]
- Microsoft Research
The current-driven modulator based on the magneto-optic effect can operate at temperatures as low as 4 K and offer data rates of up to 2 Gbps, potentially enabling large-scale control and readout of quantum computers.
A current-driven modulator based on the magneto-optic effect can operate at temperatures as low as 4 K and offer data rates of up to 2 Gbps with an energy consumption below 4 pJ per bit of transferred information. Superconducting circuits can operate at higher energy efficiencies than their room-temperature counterparts and have the potential to enable large-scale control and readout of quantum computers. However, the required interface with room-temperature electronics creates difficulties in scaling up such cryogenic systems. One option is to use optical fibres as a medium in conjunction with fast optical modulators that can be efficiently driven by electrical signals at low temperatures. However, as superconducting circuits are current operated with low impedances, they interface poorly with conventional electro-optical modulators. Here we report an integrated current-driven modulator that is based on the magneto-optic effect and can operate at temperatures as low as 4 K. The device combines a magneto-optic garnet crystal with a silicon waveguide resonator and integrates an electromagnet to modulate the refractive index of the garnet. The modulator offers data rates of up to 2 Gbps with an energy consumption below 4 pJ per bit of transferred information, which could be reduced to less than 50 fJ per bit by replacing dissipative electrodes with superconductors and optimizing the geometric parameters.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据