Negative-inductance Superconducting Quantum Interference Device with Energy Dissipation of 1.38 zJ/bit Measured by Inductively Coupled Coplanar Waveguide Resonator

【作者】 Hao LI； Jianshe LIU； Han CAI； Qichun LIU； Yingshan ZHANG； Gang LI； W.CHEN；

【Author】 Hao LI;Jianshe LIU;Han CAI;Qichun LIU;Yingshan ZHANG;Gang LI;W.CHEN;

【摘要】 High energy-efficient superconducting circuits are increasingly desirable for information technology. Negative-inductance superconducting quantum interference device(n SQUID) is considered to have the capability of approaching the physical limit of irreversible computing. Superconducting coplanar waveguide(CPW) resonator of high quality factor Q is widely used for detecting extremely small signals. To measure the energy dissipation in n SQUID, we have designed and fabricated an n SQUID with its common mode flux control inductively coupled to a superconducting CPW resonator. The energy dissipation can be obtained from the changes in transmission spectra of the coupled circuit at different input powers. Low temperature experimental results at 1.07K show that the bit operation energy in n SQUID operating at 2.19 GHz is about 1.38 zJ.更多还原

【Abstract】 High energy-efficient superconducting circuits are increasingly desirable for information technology. Negative-inductance superconducting quantum interference device(n SQUID) is considered to have the capability of approaching the physical limit of irreversible computing. Superconducting coplanar waveguide(CPW) resonator of high quality factor Q is widely used for detecting extremely small signals. To measure the energy dissipation in n SQUID, we have designed and fabricated an n SQUID with its common mode flux control inductively coupled to a superconducting CPW resonator. The energy dissipation can be obtained from the changes in transmission spectra of the coupled circuit at different input powers. Low temperature experimental results at 1.07K show that the bit operation energy in n SQUID operating at 2.19 GHz is about 1.38 zJ.更多还原