Gaussian and Non-Gaussian operations on
non-Gaussian state: engineering non-Gaussianity

• Authors: Stefano Olivares , Alessia Allevi , Maria Bondani
• Languages of publication: EN

Abstracts

EN

Multiple photon subtraction applied to a displaced
phase-averaged coherent state, which is a non-Gaussian classical state, produces conditional states
with a non trivial (positive) Glauber-Sudarshan Prepresentation.
We theoretically and experimentally
demonstrate that, despite its simplicity, this class of conditional
states cannot be fully characterized by direct detection
of photon numbers. In particular, the non-Gaussianity
of the state is a characteristics that must be assessed by
phase-sensitive measurements. We also show that the
non-Gaussianity of conditional states can be manipulated
by choosing suitable conditioning values and composition
of phase-averaged states.

Keywords

EN

Photon statistics; Photon detectors; Quantum state characterization; State engineering

• Publisher: Versita
• Journal: Quantum Measurements and Quantum Metrology
• Year: 2014
• Volume: 2
• Issue: 1

Dates

online

10 - 3 - 2014

revised

13 - 1 - 2014

accepted

27 - 1 - 2014

received

28 - 11 - 2013

Contributors

author

Stefano Olivares

• Dipartimento di Fisica, Università degli Studi di
  Milano and CNISM, U.d.R. Milano Statale, via Celoria 16, I-20133
  Milano, Italy

author

Alessia Allevi

• Dipartimento di Scienza e Alta Tecnologia, Università
  degli Studi dell’Insubria and CNISM, U.d.R. Como, via Valleggio 11,
  I-22100 Como, Italy

author

Maria Bondani

• Istituto di Fotonica e Nanotecnologie, Consiglio
  Nazionale delle Ricerche, and CNISM, U.d.R. Como, via Valleggio 11,
  I-22100 Como, Italy

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Identifiers

DOI

10.2478/qmetro-2014-0001