Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.233003
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Funding
- EPSRC [EP/I017828/1]
- Leverhulme Trust [F/00114/BG]
- Fundacion Ramon Areces
- Alexander von Humboldt Foundation
- Engineering and Physical Sciences Research Council [EP/I017828/1] Funding Source: researchfish
- EPSRC [EP/I017828/1] Funding Source: UKRI
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We show that in a gas of ultracold atoms distance selective two-body loss can be engineered via the resonant laser excitation of atom pairs to interacting electronic states. In an optical lattice this leads to a dissipative master equation dynamics with Lindblad jump operators that annihilate atom pairs with a specific interparticle distance. In conjunction with coherent hopping between lattice sites this unusual dissipation mechanism leads to the formation of coherent long-lived complexes that can even exhibit an internal level structure which is strongly coupled to their external motion. We analyze this counterintuitive phenomenon in detail in a system of hard-core bosons. While current research has established that dissipation in general can lead to the emergence of coherent features in many-body systems our work shows that strong nonlocal dissipation can effectuate a binding mechanism for particles.
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