Topological states in qubit arrays induced by density-dependent coupling
arXiv:2007.06395 · doi:10.1103/PhysRevApplied.14.064040
Abstract
Topological states of light open exciting possibilities in quantum photonics promising the topological protection of quantum entanglement. Here, we put forward an approach to realize the topological states of photon pairs mediated by the effective density-dependent coupling which is manifested as the dependence of the tunneling amplitude on the number of photons. As a specific platform, we investigate the arrays of nearest-neighbor coupled transmon qubits, where the effective density-dependent coupling is engineered by inserting auxiliary frequency-detuned resonators. We prove the topological origin of the designed model by the direct evaluation of the Zak phase highlighting the feasibility of our proposal for state-of-the-art fabrication technologies.
arXiv comment8 pages, 4 figures
References in corpus (20)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Charge insensitive qubit design derived from the Cooper pair box
- Imaging topological edge states in silicon photonics
- Quantum computational chemistry
- Superconducting Qubits: Current State of Play
- Repulsively bound atom pairs in an optical lattice
- Inversion Symmetric Topological Insulators
- Chiral groundstate currents of interacting photons in a synthetic magnetic field
- Spectral signatures of many-body localization with interacting photons
- A topological source of quantum light
- Photon solid phases in driven arrays of nonlinearly coupled cavities
- Two-particle states in the Hubbard model
- Quantum interference of topological states of light
- Observation of topological magnon insulator states in a superconducting circuit
- Tuneable hopping and nonlinear cross-Kerr interactions in a high-coherence superconducting circuit
- Two-body physics in the Su-Schrieffer-Heeger model
- Topological edge states of bound photon pairs
- Observation of the Crossover from Photon Ordering to Delocalization in Tunably Coupled Resonators
- Sublattice dynamics and quantum state transfer of doublons in two-dimensional lattices
- Interaction-induced topological states of photon pairs