PIRSA:08080048 Conference

DOI10.48660/08080048

Conference/School: Quantum Estimation: Theory and Practice - 2008

Calsamiglia, J. (2008). Phase estimation and Quantum Benchmarks for phase-covariant states. Perimeter Institute. https://pirsa.org/08080048

Calsamiglia, John. Phase estimation and Quantum Benchmarks for phase-covariant states. Perimeter Institute, Aug. 27, 2008, https://pirsa.org/08080048 

@misc{ pirsa_PIRSA:08080048,
  doi = {10.48660/08080048},
  url = {https://pirsa.org/08080048},
  author = {Calsamiglia, John},
  keywords = {},
  language = {en},
  title = {Phase estimation and Quantum Benchmarks for phase-covariant states},
  publisher = {Perimeter Institute},
  year = {2008},
  month = {aug},
  note = {PIRSA:08080048 see, \url{https://pirsa.org}}
}

Abstract

We study two related estimation problems involving phase- covariant quantum states. We first address the problem of phase estimation. We give optimal bounds for pure and mixed Gaussian states and find that for a fixed squeezing parameter a larger temperature can enhance the estimation fidelity. In addition we use state estimation concepts to give a benchmark that asses whether experimental implementations of quantum storage and teleportation protocols could be reproduced by classical means, i.e., by a measure and prepare strategy.

Resources

Next talk