47 citations · 69 across the 5 of their papers we have counts for
6 papers · 1 filter
Wideband Josephson Parametric Amplifier with Integrated Transmission Line Transformer
Leonardo Ranzani, Guilhem Ribeill, Brian Hassick +1
We describe a wide-band Josephson Parametric Amplifier (JPA) that is impedance-matched using an integrated compact superconducting transmission line transformer. The impedance tran…
Efficient qubit measurement with a nonreciprocal microwave amplifier
F. Lecocq, L. Ranzani, G. A. Peterson +5
The act of observing a quantum object fundamentally perturbs its state, resulting in a random walk toward an eigenstate of the measurement operator. Ideally, the measurement is res…
Microwave measurement beyond the quantum limit with a nonreciprocal amplifier
F. Lecocq, L. Ranzani, G. A. Peterson +6
The measurement of a quantum system is often performed by encoding its state in a single observable of a light field. The measurement efficiency of this observable can be reduced b…
High-fidelity dissipative engineering using parametric interactions
E. Doucet, F. Reiter, L. Ranzani +1
Established methods for dissipative state preparation typically rely on resolving resonances, limiting the target state fidelity due to competition between the stabilization mechan…
Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout
Leonardo Ranzani, Mustafa Bal, Kin Chung Fong +7
We describe a kinetic inductance traveling-wave (KIT) amplifier suitable for superconducting quantum information measurements and characterize its wideband scattering and noise pro…
Coherent-State Storage and Retrieval Between Superconducting Cavities Using Parametric Frequency Conversion
A. J. Sirois, M. A. Castellanos-Beltran, M. P. DeFeo +5
In superconducting quantum information, machined aluminum superconducting cavities have proven to be a well-controlled, low-dissipation electromagnetic environment for quantum circ…