English

Quantum efficiency of binary-outcome detectors of solid-state qubits

Quantum Physics 2009-11-13 v1 Other Condensed Matter

Abstract

We discuss definitions of the quantum efficiency for binary-outcome qubit detectors with imperfect fidelity, focusing on the subclass of quantum non-demolition detectors. Quantum efficiency is analyzed for several models of detectors, including indirect projective measurement, linear detector in binary-outcome regime, detector of the superconducting phase qubit, and detector based on tunneling into continuum.

Keywords

Cite

@article{arxiv.0806.3614,
  title  = {Quantum efficiency of binary-outcome detectors of solid-state qubits},
  author = {Alexander N. Korotkov},
  journal= {arXiv preprint arXiv:0806.3614},
  year   = {2009}
}

Comments

11 pages

R2 v1 2026-06-21T10:53:17.755Z