Accession Number:

ADA624973

Title:

Integrated Josephson Parametric Amplifier Readout for Solid State Qubits

Descriptive Note:

Final rept. 10 Nov 2010-9 Apr 2015

Corporate Author:

CALIFORNIA UNIV BERKELEY

Personal Author(s):

Report Date:

2014-10-13

Pagination or Media Count:

10.0

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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Optics
  • Quantum Theory and Relativity
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE