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Demonstration of a Single-chip Dual-polarization Sideband-separation SIS mixer at 2 mm Band
Wenlei Shan, Shohei Ezaki, Yoshinori Uzawa
Large-format heterodyne focal plane arrays require highly integrated receiver architectures while maintaining low noise and sufficient sideband rejection, which remains challenging…
Two-level System Loss: significant not only at Millikelvin
Wenelei Shan, Shohei Ezaki
Tow-level system (TLS) loss in amorphous dielectric materials has been intensively studied at millikelvin temperatures due to its impact on superconducting qubit devices and incohe…
Investigating Millimeter-Wave Thin-film Superconducting Resonators: A Study Using Tunnel Junction Detectors
Wenlei Shan, Sohei Ezaki
Investigations into the propagation characteristics, specifically loss and wave velocity, of superconducting coplanar waveguides and microstrip lines were conducted at a 2 mm wavel…
Experimental Study of a Planar-integrated Dual-Polarization Balanced SIS Mixer
Wenlei Shan, Shohei Ezaki, Keiko Kaneko +3
A dual-polarization balanced superconductor-insulator-superconductor mixer operating at 2 mm wavelength is realized in form of a monolithic planar integrated circuit. Planar orthom…
Planar Superconductor-Insulator-Superconductor Mixer Array Receivers for Wide Field of View Astronomical Observation
Wenlei Shan, Shohei Ezaki, Jie Liu +3
We present a conceptual framework of planar SIS mixer array receivers and the studies on the required techniques. This concept features membrane-based on-chip waveguide probes and…