Superconducting Nonlinear Kinetic Inductance Devices
Superconducting Nonlinear Kinetic Inductance Devices
复制标题
超导非线性动感器件
DOI：
10.7907/z9jq0z1f
复制
发表时间：
2017
期刊：
影响因子：
1.9
通讯作者：
A. Kher
中科院分区：
文献类型：
--
作者：
A. Kher
我们描述了一类基于超导薄膜动力学电感的非线性的新型器件。通过在微波谐振器中放置依赖于电流的电感，可以通过它们对谐振器频率的影响来测量小电流。采用高阻材料作为薄膜材料，纳米线作为动态电感，可以获得较大的非线性系数，从而提高器件的灵敏度。我们展示了8 pA/√赫兹的电流灵敏度，使该器件适用于过渡边缘传感器(TES)读数和其他尖端应用。这些设备的一个优势是它们能够在频域中进行自然的多路复用，从而能够为基于TES的仪器提供大型探测器阵列。该装置的行波版本由一条薄膜微波传输线组成，由于小电流对电感的影响而改变了线路的相长，因此对小电流也很敏感。对于该版本的器件，我们的电流灵敏度为5 pA/√HZ，因此也适用于TES读数和其他电流检测应用。它具有多千兆赫兹带宽和更大的动态范围的优势，为设备的谐振器版本提供了一种不同的方法。最后，我们还展示了该器件的传输线谐振器版本，它结合了纳米线谐振器和行波器件的一些优点。该版本的设备具有高动态范围，但也可以很容易地在频域中进行多路复用。类似于第一器件的集总元件谐振器可以被放置在环状结构中，以使其对磁场敏感。我们展示了这样一种设备的例子，其灵敏度最终可以达到与最先进的DC SQUID类似的水平，鉴于其易于多路复用，因此对于许多磁测量应用具有潜在的实用价值。最后，一个类似的微波谐振器在强泵浦音存在的情况下表现出高达29分贝的参数增益。这种参量放大器的噪声性能接近量子极限，使其在量子信息和计量学中的应用非常有用。
We describe a novel class of devices based on the nonlinearity of the kinetic inductance of a superconducting thin film. By placing a current-dependent inductance in a microwave resonator, small currents can be measured through their effect on the resonator’s frequency. By using a high-resistivity material for the film and nanowires as kinetic inductors, we can achieve a large coefficient of nonlinearity to improve device sensitivity. We demonstrate a current sensitivity of 8 pA/√Hz, making this device useful for transition-edge sensor (TES) readout and other cutting-edge applications. An advantage of these devices is their natural ability to be multiplexed in the frequency domain, enabling large detector arrays for TES-based instruments. A traveling-wave version of the device, consisting of a thin-film microwave transmission line, is also sensitive to small currents as they change the phase length of the line due to their effect on its inductance. We demonstrate a current sensitivity of 5 pA/√Hz for this version of the device, making it also suitable for TES readout as well as other current-detection applications. It has the advantage of multi-gigahertz bandwidth and greater dynamic range, offering a different approach to the resonator version of the device. Finally, we also demonstrate a transmission-line resonator version of the device that combines some of the advantages of the nanowire resonator and the traveling-wave device. This version of the device has high dynamic range but can also be easily multiplexed in the frequency domain. A lumped-element resonator similar to the first device can be placed in a loop configuration to make it sensitive to magnetic fields. We demonstrate an example of such a device whose sensitivity could ultimately reach levels similar to those of state-of-the-art DC SQUIDs, making it potentially useful for many magnetometry applications given its ease of multiplexing. Finally, a similar microwave resonator is shown to exhibit parametric gain of up to 29 dB in the presence of a strong pump tone. The noise performance of this parametric amplifier approaches the quantum limit, making it useful for applications in quantum information and metrology.
DOI：
10.1117/12.787446
发表时间：
2008-07
期刊：
--
影响因子：
--
作者：
B. Crill;P. Ade;E. Battistelli;S. Benton;R. Bihary;J. Bock;J. Bock;J. Bond;J. Brevik;S. Bryan;C. Contaldi;O. Doré;M. Farhang;L. Fissel;S. Golwala;M. Halpern;G. Hilton;W. Holmes;V. Hristov;K. Irwin;W. Jones;W. Jones;C. Kuo;A. Lange;C. Lawrie;C. MacTavish;T. G. Martin;P. Mason;T. Montroy;C. Netterfield;E. Pascale;D. Riley;J. Ruhl;M. Runyan;A. Trangsrud;C. Tucker;A. Turner;M. Viero;D. Wiebe
通讯作者：
B. Crill;P. Ade;E. Battistelli;S. Benton;R. Bihary;J. Bock;J. Bock;J. Bond;J. Brevik;S. Bryan;C. Contaldi;O. Doré;M. Farhang;L. Fissel;S. Golwala;M. Halpern;G. Hilton;W. Holmes;V. Hristov;K. Irwin;W. Jones;W. Jones;C. Kuo;A. Lange;C. Lawrie;C. MacTavish;T. G. Martin;P. Mason;T. Montroy;C. Netterfield;E. Pascale;D. Riley;J. Ruhl;M. Runyan;A. Trangsrud;C. Tucker;A. Turner;M. Viero;D. Wiebe
影响因子：
8.6
作者：
Ade, P. A. R.;Aikin, R. W.;Yoon, K. W.
通讯作者：
Yoon, K. W.