Are photon momenta in left-handed materials reversed?

Details Are photon momenta in left-handed materials reversed? Are photon momenta in left-handed materials reversed?

2008-09-20

arxiv.org/abs/0809.3504v1

Physics

Optics

3 pages, 2 figures

Scientific paper

We develop a semiclassical theory to describe the photon momenta in left-handed materials (LHMs). A single two-level atom is introduced as an "explorer" to probe the momenta of photons. We demonstrate that the linear momentum of the photons reverses its direction in LHMs. However the orbital angular momentum is remains unreversed, although the wave-fronts reversed their screwing fashion. We theoretically predict that the spin angular momentum is also unreversed. The investigation of photon momenta will provide insights into the fundamental properties of LHMs.

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