TY - JOUR
T1 - Integer quantum hall state in two-component bose gases in a synthetic magnetic field
AU - Furukawa, Shunsuke
AU - Ueda, Masahito
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/8/26
Y1 - 2013/8/26
N2 - We study two-component (or pseudospin-1/2) Bose gases in a strong synthetic magnetic field. Using exact diagonalization, we show that a bosonic analog of an integer quantum Hall state with no intrinsic topological order appears at the total filling factor ν=1+1 when the strengths of intracomponent and intercomponent interactions are comparable with each other. This provides a prime example of a symmetry-protected topological phase in a controlled setting of quantum gases. The real-space entanglement spectrum of this state is found to be comprised of counterpropagating chiral modes consistent with the edge theory derived from an effective Chern-Simons theory.
AB - We study two-component (or pseudospin-1/2) Bose gases in a strong synthetic magnetic field. Using exact diagonalization, we show that a bosonic analog of an integer quantum Hall state with no intrinsic topological order appears at the total filling factor ν=1+1 when the strengths of intracomponent and intercomponent interactions are comparable with each other. This provides a prime example of a symmetry-protected topological phase in a controlled setting of quantum gases. The real-space entanglement spectrum of this state is found to be comprised of counterpropagating chiral modes consistent with the edge theory derived from an effective Chern-Simons theory.
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U2 - 10.1103/PhysRevLett.111.090401
DO - 10.1103/PhysRevLett.111.090401
M3 - Article
AN - SCOPUS:84884225345
VL - 111
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 9
M1 - 090401
ER -