Evading Vacuum Noise: Wigner Projections or Husimi Samples?

Mueller CR, Peuntinger C, Dirmeier T, Khan I, Vogl U, Marquardt C, Leuchs G, Sanchez-Soto LL, Teo YS, Hradil Z, Rehacek J (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Physical Review Letters American Physical Society

Book Volume: 117

Article Number: 070801

Journal Issue: 7

DOI: 10.1103/PhysRevLett.117.070801

Abstract

The accuracy in determining the quantum state of a system depends on the type of measurement performed. Homodyne and heterodyne detection are the two main schemes in continuous-variable quantum information. The former leads to a direct reconstruction of the Wigner function of the state, whereas the latter samples its Husimi Q function. We experimentally demonstrate that heterodyne detection outperforms homodyne detection for almost all Gaussian states, the details of which depend on the squeezing strength and thermal noise.

Authors with CRIS profile

Christoph Marquardt Institut für Optik, Information und Photonik Gerhard Leuchs

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) Palacky University Olomouc / Univerzita Palackého v Olomouci CZ Czech Republic (CZ)

How to cite

APA:

Mueller, C.R., Peuntinger, C., Dirmeier, T., Khan, I., Vogl, U., Marquardt, C.,... Rehacek, J. (2016). Evading Vacuum Noise: Wigner Projections or Husimi Samples? Physical Review Letters, 117(7). https://doi.org/10.1103/PhysRevLett.117.070801

MLA:

Mueller, C. R., et al. "Evading Vacuum Noise: Wigner Projections or Husimi Samples?" Physical Review Letters 117.7 (2016).

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