Jiansong Gao

Henry G Leduc7
Jonas Zmuidzinas7
Benjamin A Mazin7
Peter K Day6
Omid Noroozian3
7Henry G Leduc
7Jonas Zmuidzinas
7Benjamin A Mazin
6Peter K Day
3Omid Noroozian
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  • Jiansong Gao, Miguel Daal, Anastasios Vayonakis, Shwetank Kumar, Jonas Zmuidzinas, Bernard Sadoulet +3 others
  • 2008
We present measurements of the temperature-dependent frequency shift of five niobium superconducting coplanar waveguide microresonators with center strip widths ranging from 3 to 50 ␮m, taken at temperatures in the range of 100– 800 mK, far below the 9.2 K transition temperature of niobium. These data agree well with the two-level system ͑TLS͒ theory. Fits(More)
  • Jiansong Gao, Jonas Zmuidzinas, Benjamin A Mazin, Henry G Leduc, Peter K Day
  • 2007
The authors have measured noise in thin-film superconducting coplanar waveguide resonators. This noise appears entirely as phase noise, equivalent to a jitter of the resonance frequency. In contrast, amplitude fluctuations are not observed at the sensitivity of their measurement. The ratio between the noise power in the phase and amplitude directions is(More)
  • Omid Noroozian, Jiansong Gao, Jonas Zmuidzinas, Henry G Leduc, Benjamin A Mazin
  • 2009
Noise performance is one of the most crucial aspects of any detector. Superconducting Microwave Kinetic Inductance Detectors (MKIDs) have an " excess " frequency noise that shows up as a small time dependent jitter of the resonance frequency characterized by the frequency noise power spectrum measured in units of Hz 2 /Hz. Recent studies have shown that(More)
  • Nicole G Czakon, James A Schlaerth, Peter K Day, Thomas P Downes, Ran P Duan, Jiansong Gao +14 others
  • 2010
Detectors employing superconducting microwave kinetic inductance detectors (MKIDs) can be read out by measuring changes in either the resonator frequency or dissipation. We will discuss the pros and cons of both methods, in particular, the readout method strategies being explored for the Multiwavelength Sub/millimeter Inductance Camera (MUSIC) to be(More)
This paper will present the design, implementation, performance analysis of an open source readout system for arrays of microwave kinetic inductance detectors (MKID) for mm/submm astronomy. The readout system will perform frequency domain multiplexed real-time complex microwave transmission measurements in order to monitor the instantaneous resonance(More)
  • Shwetank Kumar, Jiansong Gao, Jonas Zmuidzinas, Benjamin A Mazin, Henry G Leduc, Peter K Day
  • 2008
We present measurements of the temperature and power dependence of the resonance frequency and frequency noise of superconducting niobium thin-film coplanar waveguide resonators carried out at temperatures well below the superconducting transition ͑T c = 9.2 K͒. The noise decreases by nearly two orders of magnitude as the temperature is increased from 120(More)
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