Non-Hermitian topological phases in traveling-wave parametric amplifiers

  1. Álvaro Gómez-León,
  2. Tomás Ramos,
  3. Alejandro González-Tudela,
  4. and Diego Porras
We study the phenomena of topological amplification in one-dimensional traveling-wave parametric amplifiers. We find two phases of topological amplification, both with directional transport

Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology

  1. Tomás Ramos,
  2. Álvaro Gómez-León,
  3. Juan José García-Ripoll,
  4. Alejandro González-Tudela,
  5. and Diego Porras
Low-noise microwave amplification is crucial for detecting weak signals in quantum technologies and radio astronomy. An ideal device must amplify a broad range of frequencies while