π-flux Dirac bosons and topological edge excitations in a bosonic chiral p-wave superfluid

Abstract

We study the topological properties of elementary excitations in a staggered $p_x\pm i{p}_y$ Bose-Einstein condensate realized in recent orbital optical lattice experiments. The condensate wave function may be viewed as a configuration space variant of the famous $p_x+i{p}_y$ momentum space order parameter of strontium ruthenate superconductors. We show that its elementary excitation spectrum possesses Dirac bosons with $\pi$ Berry flux. Remarkably, if we induce a population imbalance between the $p_x+i{p}_y$ and $p_x-i{p}_y$ condensate components, a gap opens up in the excitation spectrum resulting in a nonzero Chern invariant and topologically protected edge excitation modes. We give a detailed description on how our proposal can be implemented with standard experimental technology.

6+5 pages, 3+8 figures

References in corpus (9)

• The electronic properties of graphene
• Non-Abelian Anyons and Topological Quantum Computation
• Measuring the Chern number of Hofstadter bands with ultracold bosonic atoms
• Orbital superfluidity in the $P$-band of a bipartite optical square lattice
• Chiral P-Wave Order in Sr_2RuO_4
• An Aharonov-Bohm interferometer for determining Bloch band topology
• Topological Bogoliubov excitations in inversion-symmetric systems of interacting bosons
• Quantum anomalous Hall states in the $p$-orbital honeycomb optical lattices
• Observing Chiral Superfluid Order by Matter-Wave Interference

Cited by in corpus (32)

• Topological characterizations of an extended Su-Schrieffer-Heeger model
• Chirality of topological gap solitons in bosonic dimer chains
• Symmetry-Breaking Topological Insulators in the ${\mathbb{Z}}_2$ Bose-Hubbard Model
• Topological Varma superfluid in optical lattices
• Quantum Valley Hall Effect and Perfect Valley Filter Based on Photonic Analogs of Transitional Metal Dichalcogenides
• Evidence of Potts-Nematic Superfluidity in a Hexagonal $s{p}^2$ Optical Lattice
• Topological edge states and Aharanov-Bohm caging with ultracold atoms carrying orbital angular momentum
• Integer Quantum Magnon Hall Plateau-Plateau Transition in a Spin Ice Model
• Interacting topological Dirac magnons
• Dirac surface states in magnonic analogs of topological crystalline insulators
• Topological Classification of Excitations in Quadratic Bosonic Systems
• Rotation-symmetry-enforced coupling of spin and angular momentum for p-orbital bosons
• Orbital many-body dynamics of bosons in the second Bloch band of an optical lattice
• Interaction induced topological Bogoliubov excitations in a spin-orbit coupled Bose-Einstein condensate
• Polaron in a $p+ip$ Fermi topological superfluid
• Squeezing-induced Topological Gap Opening on Bosonic Bogoliubov Excitations
• Bosonic Topological Excitations from the Instability of a Quadratic Band Crossing
• Negative Thermal Hall Conductance in Two-Dimer Shastry-Sutherland Model with π-flux Dirac Triplon
• Weyl Bogoliubov excitations in Bose-Hubbard extension of Weyl semimetal
• Chiral orbital order of interacting bosons without higher bands
• Single atom edge-like states via quantum interference
• Pseudo-time-reversal-symmetry-protected topological Bogoliubov excitations of Bose-Einstein condensates in optical lattices
• Orbital order in a bosonic $p$-band triangular lattice
• Intrinsic anomalous Hall effect across the magnetic phase transition of a spin-orbit-coupled Bose-Einstein condensate
• Odd-parity topological superfluidity for fermions in a bond-centered square optical lattice
• Topological phases of spinless $p$-orbital fermions in zigzag optical lattices
• Topological bosonic Bogoliubov excitations with sublattice symmetry
• Simulating the Palmer-Chalker state in an orbital superfluid
• Topological Higgs Amplitude Modes in Strongly Interacting Superfluids
• Bosonic Weyl excitations induced by $p$-orbital interactions in a cubic optical lattice
• Exotic Superfluid with Emergent flux in a one-dimensional Bose-Fermi mixture
• Orbital Optical Raman Lattice