PGI Kolloquium:Extraordinary LectureProf. Dr. Barbara Terhal, RWTH Aachen University & Forschungszentrum Jülich, Germany

PGI Lecture Hall, Building 04.8, 2nd Floor, Room 365

Quantum Error Correction: Dream or Nightmare?

Abstract

We discuss the need and challenge for implementing quantum error correction in quantum information processing hardware. We illustrate the rich potential of quantum error correction by our recent proposal how one can encode and protect a qubit in a superconducting cavity mode. We demonstrate how the use of quantum error correction may not only lead to more robust qubits, but can also have applications for weak force sensing not limited by Heisenberg uncertainty.

References

[1] B.M. Terhal, Quantum Error Correction for Quantum Memories, Rev. Mod. Phys. 87, 307 (2015)
[2] D. Gottesman, A. Kitaev and J. Preskill, Encoding a qubit in an oscillator, Phys. Rev. A 64, 012310 (2001)
[3] B.M. Terhal and D. Weigand, Encoding a Qubit into a Cavity Mode in Circuit-QED using Phase Estimation, Phys. Rev. A 93, 012315 (2016)
[4] B.M. Terhal and K. Duivenvoorden, Single-Mode Displacement Sensor, arXiv.org: 1603.02242.

Kontakt

Stefan Blügel

Telefon: +49 2461 61-4249

Fax:  +49 2461 61-2850

E-Mail: s.bluegel@fz-juelich.de