Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Wulayimu Maimaiti"'
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013174 (2021)
We systematically construct flatbands (FB) for tight-binding models on simple Bravais lattices in space dimension d≥2 in the presence of a static uniform DC field. Commensurate DC field directions yield irreducible Wannier-Stark (WS) bands in perpe
Externí odkaz:
https://doaj.org/article/db2ce8906c8144528fbe072f4abbebee
Autor:
Wulayimu Maimaiti, Alexei Andreanov
Publikováno v:
Physical Review B. 104
Dispersionless bands -- flatbands -- have been actively studied thanks to their interesting properties and sensitivity to perturbations, which makes them natural candidates for exotic states. In parallel non-Hermitian systems have attracted much atte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2da7a5fd5294625efa9a791545892561
https://doi.org/10.1103/physrevb.104.035115
https://doi.org/10.1103/physrevb.104.035115
Publikováno v:
Physical Review Research. 3
We systematically construct flatbands (FB) for tight-binding models on simple Bravais lattices in space dimension $d \geq 2$ in the presence of a static uniform DC field. Commensurate DC field directions yield irreducible Wannier-Stark (WS) bands in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c72b9bb1c20707089c148a0f08a45080
https://doi.org/10.1103/physrevresearch.3.013174
https://doi.org/10.1103/physrevresearch.3.013174
Dispersionless bands -- \emph{flatbands} -- provide an excellent testbed for novel physical phases due to the fine-tuned character of flatband tight-binding Hamiltonians. The accompanying macroscopic degeneracy makes any perturbation relevant, no mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cc95a1ad9a108d024e328ef117ad62e
http://arxiv.org/abs/2101.03794
http://arxiv.org/abs/2101.03794
Publikováno v:
Physical Review B. 102
In 2015 experiments were performed with superconducting microwave photonic crystals emulating artificial graphene B. Dietz, T. Klaus, M. Miski-Oglu, and A. Richter, Phys. Rev. B 91, 035411 (2015)]. The associated density of states comprises two Dirac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::464ff223693d548c09eab335110698c4
https://doi.org/10.1103/physrevb.102.214301
https://doi.org/10.1103/physrevb.102.214301
The band structure of some translationally invariant lattice Hamiltonians contains strictly dispersionless flatbands(FB). These are induced by destructive interference, and typically host compact localized eigenstates (CLS) which occupy a finite numb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2962e480b6668cc3eee61097a13ac7f1
Publikováno v:
Science China Physics, Mechanics & Astronomy. 58:1-6
In this work, we study an entanglement concentration scheme in a 3-mode optomechanical system. The scheme is based on phonon counting measurements, which can be performed through photon counting of an auxiliary cavity connected to the mechanical reso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e86161e8e613c7845f1f851c2fc676b0
https://doi.org/10.1007/s11433-015-5657-8
https://doi.org/10.1007/s11433-015-5657-8
Flat bands (FB) are strictly dispersionless bands in the Bloch spectrum of a periodic lattice Hamiltonian, recently observed in a variety of photonic and dissipative condensate networks. FB Hamiltonians are finetuned networks, still lacking a compreh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3c8f2a06f14858c1d5ae2e2ab8e4217
Publikováno v:
Physical Review A. 92
We investigate, within the weak measurement theory, the advantages of non-classical pointer states over semi-classical ones for coherent, squeezed vacuum, and Schr\"{o}inger cat states. These states are utilized as pointer state for the system operat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5a20775b9da2208638431cd6e2d4c3d
https://doi.org/10.1103/physreva.92.022109
https://doi.org/10.1103/physreva.92.022109
Autor:
Wulayimu Maimaiti, Stefano Mancini
We introduce a measure of efficiency for the photon subtraction protocol aimed at entanglement concentration on a single copy of bipartite continuous variable state. We then show that iterating the protocol does not lead to higher efficiency than a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adf9f1278d5fba6a18e2436a2f6cc7b6