3 papers
quant-ph2019
Optimizing Josephson-Ring-Modulator-based Josephson Parametric Amplifiers via full Hamiltonian control
Chenxu Liu, Tzu-Chiao Chien, Michael Hatridge +1
Josephson Parametric Amplifiers (JPA) are nonlinear devices that are used for quantum sensing and qubit readout in the microwave regime. While JPAs regularly operate in the quantum…
quant-ph2019
Multiparametric Amplification and Qubit Measurement with a Kerr-free Josephson Ring Modulator
T. -C. Chien, O. Lanes, C. Liu +6
Josephson-junction based parametric amplifiers have become a ubiquitous component in superconducting quantum machines. Although parametric amplifiers regularly achieve near-quantum…
quant-ph2018
Measurement based 2-qubit unitary gates for pairs of Nitrogen-Vacancy centers in diamond
Chenxu Liu, M. V. Gurudev Dutt, David Pekker
The implementation of a high-fidelity two-qubit quantum logic gate remains an outstanding challenge for isolated solid-state qubits such as Nitrogen-Vacancy (NV) centers in diamond…