Simplifying the circuit of Josephson parametric converters

Josephson parametric converters (JPCs) are quantum-limited three-wave mixing devices that can play various important roles in quantum information processing in the microwave domain, including amplification of quantum signals, transduction of quantum information, remote entanglement of qubits, nonreciprocal amplification, and circulation of signals [1-4]. However, the input-output and biasing circuit of a state-of-the-art JPC consists of bulky components, i.e. two commercial off-chip broadband 180-degree hybrids, four phase-matched short coax cables, and one superconducting magnetic coil. Such bulky hardware significantly hinders the integration of JPCs in scalable quantum computing architectures. In my talk, I will present ideas on how to simplify the JPC circuit and show preliminary experimental results. [1] B. Abdo et al., PRB 87, 014508. [2] M. Silveri et al., arxiv:1507.00732. [3] B. Abdo et al., PRL 112, 167701. [4] K. Sliwa et al., arxiv:1503.00209.