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Updated: May 8, 2025

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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颗粒参数放大器用于特斯拉场的低噪音测量

Nicolas Zapata1, Ivan Takmakov1,2, Simon Günzler1,2

  • 1Karlsruhe Institute of Technology, IQMT, 76131 Karlsruhe, Germany.

Physical review letters
|January 29, 2025
PubMed
概括

这项研究引入了一种使用颗粒 (grAl) 共振器的新磁场弹性放大器,克服了用于量子应用的约瑟夫森连接装置的局限性. grAl放大器在低噪音下实现了显著的增益,使得在强磁场下能够进行强大的量子电路读取.

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Small-Signal Analysis of MOSFET Amplifiers01:23

Small-Signal Analysis of MOSFET Amplifiers

In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
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