• Featured in Physics
  • Editors' Suggestion

Luttinger Liquid of Photons and Spin-Charge Separation in Hollow-Core Fibers

Dimitris G. Angelakis, Mingxia Huo, Elica Kyoseva, and Leong Chuan Kwek
Phys. Rev. Lett. 106, 153601 – Published 11 April 2011
Physics logo See Viewpoint: In a tight spot, spin and charge separate

Abstract

In this work we show that light-matter excitations (polaritons) generated inside a hollow-core one-dimensional fiber filled with two types of atoms, can exhibit Luttinger liquid behavior. We first explain how to prepare and drive this quantum-optical system to a strongly interacting regime, described by a bosonic two-component Lieb-Liniger model. Utilizing the connection between strongly interacting bosonic and fermionic systems, we then show how spin-charge separation could be observed by probing the correlations in the polaritons. This is performed by first mapping the polaritons to propagating photon pulses and then measuring the effective photonic spin and charge densities and velocities by analyzing the correlations in the emitted photon spectrum. The necessary regime of interactions is achievable with current quantum-optical technology.

  • Figure
  • Figure
  • Received 23 July 2010

DOI:https://doi.org/10.1103/PhysRevLett.106.153601

© 2011 American Physical Society

Viewpoint

Key Image

In a tight spot, spin and charge separate

Published 11 April 2011

Photons (bosons) confined in a hollow waveguide containing an atomic gas could show spin-charge separation, which is more commonly associated with one-dimensional fermions.

See more in Physics

Authors & Affiliations

Dimitris G. Angelakis1,2,*, Mingxia Huo2, Elica Kyoseva2, and Leong Chuan Kwek2,3

  • 1Science Department, Technical University of Crete, Chania, Crete, Greece, 73100
  • 2Centre for Quantum Technologies, National University of Singapore, 2 Science Drive 3, Singapore 117542
  • 3National Institute of Education and Institute of Advanced Studies, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616

  • *dimitris.angelakis@gmail.org

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 106, Iss. 15 — 15 April 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

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
×