Self-interfering wavepackets
arXiv:1507.02676 · doi:10.1103/PhysRevLett.116.026401
Abstract
We study the propagation of non-interacting polariton wavepackets. We show how two qualitatively different concepts of mass that arise from the peculiar polariton dispersion lead to a new type of particle-like object from non-interacting fields---much like self-accelerating beams---shaped by the Rabi coupling out of Gaussian initial states. A divergence and change of sign of the diffusive mass results in a "mass wall" on which polariton wavepackets bounce back. Together with the Rabi dynamics, this yield propagation of ultrafast subpackets and ordering of a spacetime crystal.
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Cited by in corpus (15)
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- Polariton-Enhanced Exciton Transport
- What is a quantum shock wave?
- Polaritonic Rabi and Josephson Oscillations
- Negative-mass effects in spin-orbit coupled Bose-Einstein condensates
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- Finite-energy accelerating beam dynamics in wavelet-based representations