Multiplexed readout of four qubits in 3D cQED architecture using broadband JPA

Autor:	Kundu, Suman, Gheeraert, Nicolas, Hazra, Sumeru, Roy, Tanay, Salunkhe, Kishor V., Patankar, Meghan P., Vijay, R.
Rok vydání:	2019
Předmět:	Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	We propose and demonstrate a frequency-multiplexed readout scheme in 3D cQED architecture. We use four transmon qubits coupled to individual rectangular cavities which are aperture-coupled to a common rectangular waveguide feedline. A coaxial to waveguide transformer at the other end of the feedline allows one to launch and collect the multiplexed signal. The reflected readout signal is amplified by an impedance engineered broadband parametric amplifier with 380 MHz of bandwidth. This provides us high fidelity single-shot readout of multiple qubits using compact microwave circuitry, an efficient way for scaling up to more qubits in 3D cQED. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1901.07211 Zobrazit plný text záznamu View this record from Arxiv