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Title: Luttinger liquid of photons and spin-charge separation in hollow-core fibers
Authors: Angelakis, Dimitris G.
Huo, Ming-Xia
Kyoseva, Elica
Kwek, Leong Chuan
Issue Date: 2011
Citation: Angelakis, D. G., Huo, M. -X, Kyoseva, E., & Kwek, L. C. (2011). Luttinger liquid of photons and spin-charge separation in hollow-core fibers. Physical Review Letters, 106(15): 153601.
Abstract: In this work we show that light-matter excitations (polaritons) generated inside a hollow-core onedimensional
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.
ISSN: 0031-9007 (print)
1079-7114 (online)
Other Identifiers: 10.1103/PhysRevLett.106.153601
Appears in Collections:Journal Articles

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