Journal
EPL
Volume 86, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/86/47008
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Funding
- NSFC [10604047]
- CUHK [2060360]
- HK Government [HKUST3/06C]
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By numerically solving Maxwell's equation with boundary conditions, we have demonstrated the optical Zitterbewegung effect by means of electromagnetic pulses propagating through a negative-zero-positive index metamaterial (NZPIM). We find that a finite pulse with frequencies near the Dirac point of the NZPIM diffuses and oscillates, and its output pulse from the finite NZPIM slab becomes an oscillating pulse with a characteristic frequency independent of the slab thickness. We further find that the oscillating properties of the optical Zitterbewegung effect are strongly dependent on the pulse parameters: such as pulse duration and pulse transverse spatial width. The physical nature of such oscillation effects is due to the interference between the upper and lower high-transmittance passbands at both sides of the Dirac point of the NZPIM slab, which is similar to the Zitterbewegung of electron wave packets. Copyright (C) EPLA, 2009
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