Integrated Josephson Parametric Amplifier Readout for Solid State Qubits
Abstract
We developed single-shot readout capability for superconducting qubits using dispersive measurements. The state of a quantum circuit is mapped unto the state of a resonant cavity which is then probed by microwave reflectometery. To maintain coherence, the cavity is weakly probed with only of order one microwave photon. Such a weak signal is detected by way of a superconducting parametric amplifier, developed with ARO support, which is nearly quantum limited in its noise performance. With this capability, we demonstrated several experimental milestones: high fidelity real time readout, active quantum feedback, and state tracking.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 13, 2014
- Accession Number
- ADA624973
Entities
People
- Irfan Siddiqi
Organizations
- University of California, Berkeley