666 citations · 2.8k across the 25 of their papers we have counts for
26 papers
Observation of Unidirectional s-p Orbital Topological Edge States in Driven Photonic Lattices
Gayathry Rajeevan, Sebabrata Mukherjee
Time-periodic modulation of a static system is a powerful method for realizing robust unidirectional topological states. So far, all such realizations have been based on interactio…
Phase and Photon Number Dependent NOON State Localization in Flat Band Lattices
Rishav Hui, Trideb Shit, Marco Di Liberto +2
Flat-band lattices supporting compact localized states provide a versatile platform for exploring unconventional transport phenomena in photonic, ultracold atomic, electronic, and…
Nonlinearity-induced Band Gap Transmission in Dispersive and Flat Band Photonic Lattices
Avinash Tetarwal, Shailja Sharma, Sebabrata Mukherjee
Nonlinear interactions in photonic non-dispersive (flat) bands remain largely unexplored, despite their potential to yield exotic phenomena. Here, we demonstrate nonlinearity-induc…
Probing the Topological Anderson Transition in Quasiperiodic Photonic Lattices via Chiral Displacement and Wavelength Tuning
Abhinav Sinha, Trideb Shit, Avinash Tetarwal +2
The interplay of topology and disorder in quantum dynamics has recently attracted significant attention across diverse platforms, including solid-state devices, ultracold atoms, an…
Nonlinear Switch and Spatial Lattice Solitons of Photonic s-p Orbitals
Gayathry Rajeevan, Sebabrata Mukherjee
We develop fs laser-fabricated asymmetric couplers and zig-zag arrays consisting of single and two-mode waveguides with bipartite nonlinearity. The fundamental mode ( orbital) i…
Optical control of topological end states via soliton formation in a 1D lattice
Christina Jörg, Marius Jürgensen, Sebabrata Mukherjee +1
Solitons are self-consistent solutions of the nonlinear Schrödinger equation that maintain their shape during propagation. Here we show, using a pump-probe technique, that soliton…
Intensity Correlation Measurement to Simulate Two-body BICs and Probe Nonlinear Discrete Breathers
Trideb Shit, Rishav Hui, Marco Di Liberto +2
We study Hanbury Brown-Twiss spatial intensity correlations in femtosecond laser-fabricated photonic Su-Schrieffer-Heeger lattices using coherent input states with tunable phases.…
Artificial gauge fields in the t-z mapping for optical pulses: spatio-temporal wavepacket control and quantum Hall physics
Christopher Oliver, Sebabrata Mukherjee, Mikael C. Rechtsman +2
We extend the mapping formalism of time-dependent paraxial optics by identifying configurations displaying a synthetic magnetic vector potential, leading to a non-trivial ban…
Period-doubled Floquet Solitons
Sebabrata Mukherjee, Mikael C. Rechtsman
We propose and experimentally demonstrate a family of Floquet solitons in the bulk of a photonic topological insulator that have double the period of the drive. Our experimental sy…
Quantized Fractional Thouless Pumping of Solitons
Marius Jürgensen, Sebabrata Mukherjee, Christina Jörg +1
In many contexts, the interaction between particles gives rise to emergent and perhaps unanticipated physical phenomena. An example is the fractional quantum Hall effect, where int…
Quantized Nonlinear Thouless Pumping
Marius Jürgensen, Sebabrata Mukherjee, Mikael C. Rechtsman
The sharply quantized transport observed in the integer quantum Hall effect can be explained via a simple one-dimensional model with a time-periodic, adiabatically varying potentia…
Observation of unidirectional soliton-like edge states in nonlinear Floquet topological insulators
Sebabrata Mukherjee, Mikael C. Rechtsman
A salient feature of solid-state topological materials in two dimensions is the presence of conducting electronic edge states that are insensitive to scattering by disorder. Such u…
Observation of a higher-order topological bound state in the continuum
Alexander Cerjan, Marius Jürgensen, Wladimir A. Benalcazar +2
Higher-order topological insulators are a recently discovered class of materials that can possess zero-dimensional localized states regardless of the dimension of the lattice. Here…
Observation of Topological Band Gap Solitons
Sebabrata Mukherjee, Mikael C. Rechtsman
Topological materials exhibit properties dictated by quantised invariants that make them robust against perturbations. This topological protection is a universal wave phenomenon th…
Nonlinear dynamics of Aharonov-Bohm cages
Marco Di Liberto, Sebabrata Mukherjee, Nathan Goldman
The interplay of -flux and lattice geometry can yield full localization of quantum dynamics in lattice systems, a striking interference phenomenon known as Aharonov-Bohm caging.…
Experimental observation of Aharonov-Bohm cages in photonic lattices
Sebabrata Mukherjee, Marco Di Liberto, Patrik Öhberg +2
We report on the experimental realization of a uniform synthetic magnetic flux and the observation of Aharonov-Bohm cages in photonic lattices. Considering a rhombic array of optic…
State-recycling and time-resolved imaging in topological photonic lattices
Sebabrata Mukherjee, Harikumar K. Chandrasekharan, Patrik Öhberg +2
Photonic lattices - arrays of optical waveguides - are powerful platforms for simulating a range of phenomena, including topological phases. While probing dynamics is possible in t…
Observation of Ground and Excited Flat Band States in Graphene Photonic Ribbons
Camilo Cantillano, Sebabrata Mukherjee, Luis Morales-Inostroza +5
Understanding the wave transport and localisation is a major goal in the study of lattices of different nature. In general, inhibiting the energy transport on a perfectly periodic…
Observation of robust flat-band localization in driven photonic rhombic lattices
Sebabrata Mukherjee, Robert R. Thomson
We demonstrate that a flat-band state in a quasi-one-dimensional rhombic lattice is robust in the presence of external drivings along the lattice axis. The lattice was formed by pe…
Dissipatively Coupled Waveguide Networks for Coherent Diffusive Photonics
Sebabrata Mukherjee, Dmitri Mogilevtsev, Gregory Ya. Slepyan +3
A photonic circuit is generally described as a structure in which light propagates by unitary exchange and transfers reversibly between channels. In contrast, the term `diffusive'…
Experimental observation of anomalous topological edge modes in a slowly-driven photonic lattice
Sebabrata Mukherjee, Alexander Spracklen, Manuel Valiente +4
The discovery of the quantised Hall effect, and its subsequent topological explanation, demonstrated the important role topology can play in determining the properties of quantum s…
Observation of pair tunneling and coherent destruction of tunneling in arrays of optical waveguides
Sebabrata Mukherjee, Manuel Valiente, Nathan Goldman +4
We report on the experimental realization of a photonic system that simulates the one-dimensional two-particle Hubbard model. This analogy is realized by means of two-dimensional a…
Observation of localized flat-band modes in a quasi-one-dimensional photonic rhombic lattice
Sebabrata Mukherjee, Robert R. Thomson
We experimentally demonstrate the photonic realization of a dispersionless flat-band in a quasi-one-dimensional photonic lattice fabricated by ultrafast laser inscription. In the n…
Modulation-assisted tunneling in laser-fabricated photonic Wannier-Stark ladders
Sebabrata Mukherjee, Alexander Spracklen, Debaditya Choudhury +4
We observe Wannier-Stark localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site…