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QUBITWIRE 100

Oskar Painter

John G. Braun Professor of Applied Physics and Physics; Director of Quantum Hardware, AWS

Caltech / Amazon Web Services

Caltech
United States · work baseIdentification checked 2026-09-19
WHY INCLUDED

Connects precision control of light and mechanical motion with superconducting quantum hardware, including the cat-qubit approach used by AWS to explore lower-overhead quantum error correction.

CaltechCaltech

Painter’s contributions join the control of quantum physical systems with the engineering of a computing architecture. His group’s micromechanical experiment generated squeezed light on a silicon device, showing how designed structures can manipulate optical noise. More recently, his AWS hardware program demonstrated the Ocelot cat-qubit chip with error correction. The two results operate at different levels, device physics and encoded computation. Ocelot is an experimental building block toward larger systems, with substantial engineering still required for useful fault-tolerant computing.

CaltechCaltechCaltech

Defining contributions

Work, in context
  1. 2013

    Squeezing light with a silicon device

    Painter and colleagues used a silicon micromechanical system to generate squeezed light, connecting optomechanical device design with reduced optical measurement noise.

    Researcher and group leader working with colleagues on the silicon optomechanical experiment.

    Source-supported recordCaltech
  2. 2025

    Ocelot cat-qubit error correction

    Led AWS quantum hardware when the AWS–Caltech team demonstrated Ocelot, combining five cat qubits and four ancillary qubits to test an error-correcting architecture.

    AWS quantum-hardware leader during the AWS–Caltech Ocelot experiment; result attributed to the collaborating team.

    Source-supported recordCaltech

Keep in perspective

Ocelot is described as an experimental error-correction demonstration rather than a completed useful quantum computer.

Follow the evidence

3 sources

Primary papers, institutional records and attributed announcements. Each source supports the claims linked above.

QubitWire editorial · Content edition 2026-09-19.1Independent coverage. Inclusion does not imply endorsement.