Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Flatband (FB) photonic systems have been in the spotlight of researchers since they
represent an advantageous testbed for studying transport and localization properties at the linear level [1]. Among variety of platforms where flatbands have been
realized photonic lattices have been established as the ideal ones, since working
with them is very comfortable - they are easy to manipulate with and it is possible
to directly observe the wave dynamics. Due to their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field flux, i.
e. the spin-orbit interaction in atomic systems [2].
Here, we study a two-dimensional (2D) pluslike lattice [3], dressed by the artificial
flux, which could be realized by experimental techniques based on the coupledspring resonators [4] and wave-guide networks [5]. We investigate the influence of
the artificial flux on the energy band spectrum and the idea is to find the compact
localized modes (CLM).
T...he unit cell of the plus lattice consists of five sites, with real intra-cell hopping
represented by the coupling coefficient. The flux of the artificial field modifies the
coupling between different unit cell sites to t∙exp(±iϕ/4), where tis the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice,
the energy spectrum has one fully degenerate FB, centered at zero, between two
dispersive bands (DBs), each of which is being accompanied with the other mirror
symmetric DB [3]. We have found that 2D plus lattice can be dressed by artificial
flux to host the Aharonov-Bohm (AB) effect. This effect causes the appearance of
flat zones in the energy spectrum of the lattice. Hence, when diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two momentum independent, fully degenerated FBs, and three DBs.
The dynamics of CLMs in 2D flux-dressed plus lattice can be analyzed numerically,
adopting the Runge-Kutta procedure of the 6th order. In order to scan the dynamical properties of the CLMs we will calculate some of the following quantities: the
participation number, which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude of the field overlap; and total intensity distribution. The evolution of these quantities will show the efficiency of
the mode compactness-localization.
Извор:
BPU11 : 11th International Conference of the Balkan Physical Union, 2022, 427, 149-150Напомена:
- XI Conference of the Balkan Physical Union : BPU11; Aug 28 - Sep 1, 2022; Belgrade
- S07-OP Optics and Photonics
Колекције
Институција/група
VinčaTY - CONF AU - Stepić, Milutin AU - Maluckov, Aleksandra AU - Mančić, Ana AU - Stojanović, Mirjana G. PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11851 AB - Flatband (FB) photonic systems have been in the spotlight of researchers since they represent an advantageous testbed for studying transport and localization properties at the linear level [1]. Among variety of platforms where flatbands have been realized photonic lattices have been established as the ideal ones, since working with them is very comfortable - they are easy to manipulate with and it is possible to directly observe the wave dynamics. Due to their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field flux, i. e. the spin-orbit interaction in atomic systems [2]. Here, we study a two-dimensional (2D) pluslike lattice [3], dressed by the artificial flux, which could be realized by experimental techniques based on the coupledspring resonators [4] and wave-guide networks [5]. We investigate the influence of the artificial flux on the energy band spectrum and the idea is to find the compact localized modes (CLM). The unit cell of the plus lattice consists of five sites, with real intra-cell hopping represented by the coupling coefficient. The flux of the artificial field modifies the coupling between different unit cell sites to t∙exp(±iϕ/4), where tis the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice, the energy spectrum has one fully degenerate FB, centered at zero, between two dispersive bands (DBs), each of which is being accompanied with the other mirror symmetric DB [3]. We have found that 2D plus lattice can be dressed by artificial flux to host the Aharonov-Bohm (AB) effect. This effect causes the appearance of flat zones in the energy spectrum of the lattice. Hence, when diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two momentum independent, fully degenerated FBs, and three DBs. The dynamics of CLMs in 2D flux-dressed plus lattice can be analyzed numerically, adopting the Runge-Kutta procedure of the 6th order. In order to scan the dynamical properties of the CLMs we will calculate some of the following quantities: the participation number, which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude of the field overlap; and total intensity distribution. The evolution of these quantities will show the efficiency of the mode compactness-localization. C3 - BPU11 : 11th International Conference of the Balkan Physical Union T1 - Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice VL - 427 SP - 149 EP - 150 UR - https://hdl.handle.net/21.15107/rcub_vinar_11851 ER -
@conference{ author = "Stepić, Milutin and Maluckov, Aleksandra and Mančić, Ana and Stojanović, Mirjana G.", year = "2022", abstract = "Flatband (FB) photonic systems have been in the spotlight of researchers since they represent an advantageous testbed for studying transport and localization properties at the linear level [1]. Among variety of platforms where flatbands have been realized photonic lattices have been established as the ideal ones, since working with them is very comfortable - they are easy to manipulate with and it is possible to directly observe the wave dynamics. Due to their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field flux, i. e. the spin-orbit interaction in atomic systems [2]. Here, we study a two-dimensional (2D) pluslike lattice [3], dressed by the artificial flux, which could be realized by experimental techniques based on the coupledspring resonators [4] and wave-guide networks [5]. We investigate the influence of the artificial flux on the energy band spectrum and the idea is to find the compact localized modes (CLM). The unit cell of the plus lattice consists of five sites, with real intra-cell hopping represented by the coupling coefficient. The flux of the artificial field modifies the coupling between different unit cell sites to t∙exp(±iϕ/4), where tis the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice, the energy spectrum has one fully degenerate FB, centered at zero, between two dispersive bands (DBs), each of which is being accompanied with the other mirror symmetric DB [3]. We have found that 2D plus lattice can be dressed by artificial flux to host the Aharonov-Bohm (AB) effect. This effect causes the appearance of flat zones in the energy spectrum of the lattice. Hence, when diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two momentum independent, fully degenerated FBs, and three DBs. The dynamics of CLMs in 2D flux-dressed plus lattice can be analyzed numerically, adopting the Runge-Kutta procedure of the 6th order. In order to scan the dynamical properties of the CLMs we will calculate some of the following quantities: the participation number, which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude of the field overlap; and total intensity distribution. The evolution of these quantities will show the efficiency of the mode compactness-localization.", journal = "BPU11 : 11th International Conference of the Balkan Physical Union", title = "Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice", volume = "427", pages = "149-150", url = "https://hdl.handle.net/21.15107/rcub_vinar_11851" }
Stepić, M., Maluckov, A., Mančić, A.,& Stojanović, M. G.. (2022). Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice. in BPU11 : 11th International Conference of the Balkan Physical Union, 427, 149-150. https://hdl.handle.net/21.15107/rcub_vinar_11851
Stepić M, Maluckov A, Mančić A, Stojanović MG. Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice. in BPU11 : 11th International Conference of the Balkan Physical Union. 2022;427:149-150. https://hdl.handle.net/21.15107/rcub_vinar_11851 .
Stepić, Milutin, Maluckov, Aleksandra, Mančić, Ana, Stojanović, Mirjana G., "Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice" in BPU11 : 11th International Conference of the Balkan Physical Union, 427 (2022):149-150, https://hdl.handle.net/21.15107/rcub_vinar_11851 .