Experimental observation of Aharonov-Bohm caging using orbital angular momentum modes in optical waveguides
arXiv:2004.07038 · doi:10.1038/s41377-020-00385-6
Abstract
The discovery of artificial gauge fields, controlling the dynamics of uncharged particles that otherwise elude the influence of standard electric or magnetic fields, has revolutionized the field of quantum simulation. Hence, developing new techniques to induce those fields is essential to boost quantum simulation in photonic structures. Here, we experimentally demonstrate in a photonic lattice the generation of an artificial gauge field by modifying the input state, overcoming the need to modify the geometry along the evolution or imposing the presence of external fields. In particular, we show that an effective magnetic flux naturally appears when light beams carrying orbital angular momentum are injected into waveguide lattices with certain configurations. To demonstrate the existence of that flux, we measure the resulting Aharonov-Bohm caging effect. Therefore, we prove the possibility of switching on and off artificial gauge fields by changing the topological charge of the input state, paving the way to access different topological regimes in one single structure, which represents an important step forward for optical quantum simulation.
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- Matryoshka approach to Sine-Cosine topological models
- Direct laser-written optomechanical membranes in fiber Fabry-Perot cavities
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- Kaleidoscopes of Hofstadter Butterflies and Aharonov-Bohm caging from -root topology in decorated square lattices
- Existence of a negative next-nearest-neighbor coupling in evanescently coupled dielectric waveguides
- Two-dimensional excitons from twisted light and the fate of the photon's orbital angular momentum
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- Tunable Aharonov-Bohm cages through anti--symmetric imaginary couplings
- Nonlinear Switch and Spatial Lattice Solitons of Photonic s-p Orbitals
- A mono-atomic orbital-based 1D topological crystalline insulator
- Robust incoherent perfect absorption
- Flux-mediated effective Su-Schrieffer-Heeger model in an impurity decorated diamond chain
- Impurity flat band states in the diamond chain
- Tunable zero modes and quantum interferences in flat-band topological insulators
- Compact localized currents in flat bands with broken time-reversal symmetry
- Generation of Half-Integer Harmonics and Efficient THz-to-Visible Frequency Conversion in Strained Graphene
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- Controlled transport based on multiorbital Aharonov-Bohm photonic caging