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

• Autorzy: Stefano Olivares , Alessia Allevi , Maria Bondani
• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

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

• Czasopismo: Quantum Measurements and Quantum Metrology
• Rocznik: 2014
• Tom: 2
• Numer: 1

Daty

otrzymano

2013-11-28

poprawiono

2014-01-13

zaakceptowano

2014-01-27

online

2014-03-10

Twórcy

autor

Stefano Olivares

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

autor

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

autor

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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Identyfikatory

DOI

10.2478/qmetro-2014-0001