TY - JOUR

T1 - Topological Spin Phases of Trapped Rydberg Excitons in Cu2 O

AU - Poddubny, A. N.

AU - Glazov, M. M.

PY - 2019/9/16

Y1 - 2019/9/16

N2 - We theoretically study Rydberg excitons in one-dimensional chains of traps in Cu2O coupled via the van der Waals interaction. The triplet of optically active p-shell states acts as an effective spin 1, and the interactions between the excitons are strongly spin dependent. We predict that the system has the topological Haldane phase with the diluted antiferromagnetic order, long-range string correlations, and finite excitation gap. We also analyze the effect of the trap geometry and interactions anisotropy on the Rydberg exciton spin states and demonstrate that a rich spin phase diagram can be realized showing high tunability of the Rydberg exciton platform.

AB - We theoretically study Rydberg excitons in one-dimensional chains of traps in Cu2O coupled via the van der Waals interaction. The triplet of optically active p-shell states acts as an effective spin 1, and the interactions between the excitons are strongly spin dependent. We predict that the system has the topological Haldane phase with the diluted antiferromagnetic order, long-range string correlations, and finite excitation gap. We also analyze the effect of the trap geometry and interactions anisotropy on the Rydberg exciton spin states and demonstrate that a rich spin phase diagram can be realized showing high tunability of the Rydberg exciton platform.

KW - HALDANE-GAP

KW - SYMMETRY-BREAKING

KW - GROUND-STATES

KW - QUANTUM

KW - CONDUCTIVITY

KW - REALIZATION

KW - DYNAMICS

KW - MODEL

UR - http://www.scopus.com/inward/record.url?scp=85072773875&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.123.126801

DO - 10.1103/PhysRevLett.123.126801

M3 - Article

C2 - 31633959

AN - SCOPUS:85072773875

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

M1 - 126801

ER -