152 citations · 726 across the 24 of their papers we have counts for
6 papers · 1 filter
Suspended graphene devices with local gate control on an insulating substrate
Florian R. Ong, Zheng Cui, Muhammet A. Yurtalan +6
We present a fabrication process for graphene-based devices where a graphene monolayer is suspended above a local metallic gate placed in a trench. As an example we detail the fabr…
Flux qubits in a planar circuit quantum electrodynamics architecture: quantum control and decoherence
J. -L. Orgiazzi, C. Deng, D. Layden +6
We report experiments on superconducting flux qubits in a circuit quantum electrodynamics (cQED) setup. Two qubits, independently biased and controlled, are coupled to a coplanar w…
Characterization of low-temperature microwave loss of thin aluminum oxide formed by plasma oxidation
Chunqing Deng, Martin Otto, Adrian Lupascu
We report on the characterization of microwave loss of thin aluminum oxide films at low temperatures using superconducting lumped resonators. The oxide films are fabricated using p…
An analysis method for transmission measurements of superconducting resonators with applications to quantum-regime dielectric-loss measurements
Chunqing Deng, Martin Otto, Adrian Lupascu
Superconducting resonators provide a convenient way to measure loss tangents of various dielectrics at low temperature. For the purpose of examining the microscopic loss mechanisms…
Ultrasensitive magnetic field detection using a single artificial atom
Mustafa Bal, Chunqing Deng, Jean-Luc Orgiazzi +2
Efficient detection of magnetic fields is central to many areas of research and has important practical applications ranging from materials science to geomagnetism. High sensitivit…
Quantum non-demolition measurement of microwave photons using engineered quadratic interactions
Chunqing Deng, J. M. Gambetta, A. Lupascu
We present a quantum electrical circuit with Josephson junctions formed of two anharmonic oscillators coupled with an interaction where and ar…