Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.245504
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Funding
- UK Science and Technology Facilities Council (STFC) [ST/H005595/1]
- STFC Project Research and Development (STFC-PRD) scheme [ST/K00235X/1]
- European Union via the OPTICON Research Infrastructure for Optical/IR astronomy [EU-FP7 226604]
- EPSRC CM-DTC
- Heriot-Watt University
- FRS-FNRS Belgium
- Belgian Science Policy Office under the Interuniversity Attraction Pole Project [P7/18 DYGEST]
- Engineering and Physical Sciences Research Council [EP/M024636/1, 1405729] Funding Source: researchfish
- Science and Technology Facilities Council [ST/H005595/1, ST/K00235X/1] Funding Source: researchfish
- EPSRC [EP/M024636/1] Funding Source: UKRI
- STFC [ST/K00235X/1, ST/H005595/1] Funding Source: UKRI
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We demonstrate the first experimental realization of a dispersionless state, in a photonic Lieb lattice formed by an array of optical waveguides. This engineered lattice supports three energy bands, including a perfectly flat middle band with an infinite effective mass. We analyze, both experimentally and theoretically, the evolution of well-prepared flat-band states, and show their remarkable robustness, even in the presence of disorder. The realization of flat-band states in photonic lattices opens an exciting door towards quantum simulation of flat-band models in a highly controllable environment.
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