Complete bi-partite CV entanglement characterization via coveriance matrix measurement

Alberto Porzio; Virginia D'Auria; Stefano Fornaro; Salvatore Solimeno

doi:10.1117/12.820351

18 May 2009 Complete bi-partite CV entanglement characterization via coveriance matrix measurement

Alberto Porzio, Virginia D'Auria, Stefano Fornaro, Salvatore Solimeno

Proceedings Volume 7355, Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing II; 73550B (2009) https://doi.org/10.1117/12.820351
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

We report the first complete experimental reconstruction of the covariance matrix (CM) relative to a bi-partite continuous variable (CV) entangled state outing a non degenerate optical parametric oscillator (OPO) below threshold. The covariance matrix CM has been reconstructed following the method reported in V. D'Auria et al., J. Opt. B 7, S750 (2005). The two entangled beams (signal (a) and idler (b)) are produced by a by a continuous wave (CW) optical parametric oscillator (OPO) via type-II (same frequency but with orthogonal polarizations), phase matching and working below threshold. Our experimental setup makes use of a single homodyne detector and of a compact source of entangled beams. The quadratures values and other relevant quantities are reconstructed by quantum tomography, without making any a priori assumption on the state under evalutation.

Citation Download Citation

Alberto Porzio, Virginia D'Auria, Stefano Fornaro, and Salvatore Solimeno "Complete bi-partite CV entanglement characterization via coveriance matrix measurement", Proc. SPIE 7355, Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing II, 73550B (18 May 2009); https://doi.org/10.1117/12.820351

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available