• Featured in Physics
  • Editors' Suggestion

Experimental Unconditional Preparation and Detection of a Continuous Bound Entangled State of Light

J. DiGuglielmo, A. Samblowski, B. Hage, C. Pineda, J. Eisert, and R. Schnabel
Phys. Rev. Lett. 107, 240503 – Published 8 December 2011
Physics logo See Synopsis: The Bound and the Free
PDFHTMLExport Citation

Abstract

Among the possibly most intriguing aspects of quantum entanglement is that it comes in free and bound instances. The existence of bound entangled states certifies an intrinsic irreversibility of entanglement in nature and suggests a connection with thermodynamics. In this Letter, we present a first unconditional, continuous-variable preparation and detection of a bound entangled state of light. We use convex optimization to identify regimes rendering its bound character well certifiable, and continuously produce a distributed bound entangled state with an extraordinary and unprecedented significance of more than 10 standard deviations away from both separability and distillability. Our results show that the approach chosen allows for the efficient and precise preparation of multimode entangled states of light with various applications in quantum information, quantum state engineering, and high precision metrology.

  • Figure
  • Figure
  • Received 21 March 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.240503

© 2011 American Physical Society

Synopsis

Key Image

The Bound and the Free

Published 8 December 2011

Precisely prepared photon states can probe quantum statistical phenomena and generate intriguing forms of quantum entanglement.

See more in Physics

Authors & Affiliations

J. DiGuglielmo1, A. Samblowski1, B. Hage1, C. Pineda2,4, J. Eisert3,4, and R. Schnabel1

  • 1Institut für Gravitationsphysik, Leibniz Universität Hannover, 30167 Hannover, Germany and Max-Planck Institut für Gravitationsphysik, 30167 Hannover, Germany
  • 2Instituto de Física, Universidad Nacional Autónoma de México, México
  • 3Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany
  • 4Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 107, Iss. 24 — 9 December 2011

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×