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Journal Article

Far-Field Signatures of a Two-Body Bound State in Collective Emission from Interacting Two-Level Atoms on a Lattice

MPS-Authors
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Longo,  Paolo
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

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Evers,  Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

External Resource

http://link.aps.org/doi/10.1103/PhysRevLett.112.193601
(Publisher version)

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1404.5789.pdf
(Preprint), 557KB

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Citation

Longo, P., & Evers, J. (2014). Far-Field Signatures of a Two-Body Bound State in Collective Emission from Interacting Two-Level Atoms on a Lattice. Physical Review Letters, 112(19): 193601. doi:10.1103/PhysRevLett.112.193601.


Cite as: https://hdl.handle.net/11858/00-001M-0000-001A-02CD-A
Abstract
The collective emission from a one-dimensional chain of interacting two-level atoms is investigated. We calculate the light scattered by dissipative few-excitation eigenstates in the far-field, and in particular focus on signatures of a lattice two-body bound state. We present analytical results for the angle-resolved, temporal decay of the scattered light intensity. Moreover, we find that the steady-state emission spectrum that emerges when the system is probed by a weak, incoherent driving field exhibits a distinct signature for the existence of a bound state, and allows to determine the momentum distribution of the two-body relative wavefunction. Intriguingly, our study does not rely on single-atom addressability and/or manipulation techniques.