Manipulating non-reciprocity in a two-dimensional magnetic quantum walk
arXiv:2212.00387 · doi:10.1038/s41467-023-42045-4
Abstract
Non-reciprocity is an important topic in fundamental physics and quantum-device design, as much effort has been devoted to its engineering and manipulation. Here we experimentally demonstrate non-reciprocal transport in a two-dimensional quantum walk of photons, where the directional propagation is highly tunable through dissipation and synthetic magnetic flux. The non-reciprocal dynamics hereof is a manifestation of the non-Hermitian skin effect, with its direction continuously adjustable through the photon-loss parameters. By contrast, the synthetic flux originates from an engineered geometric phase, which competes with the non-Hermitian skin effect through magnetic confinement. We further demonstrate how the non-reciprocity and synthetic flux impact the dynamics of the Floquet topological edge modes along an engineered boundary. Our results exemplify an intriguing strategy for achieving tunable non-reciprocal transport, highlighting the interplay of non-Hermiticity and gauge fields in quantum systems of higher dimensions.
9 pages, 6 figures
References in corpus (19)
- Making Sense of Non-Hermitian Hamiltonians
- Topological Origin of Non-Hermitian Skin Effects
- Efficient Light Funneling based on the non-Hermitian Skin Effect
- A 2D Quantum Walk Simulation of Two-Particle Dynamics
- Periodic Table for Topological Bands with Non-Hermitian Bernard-LeClair Symmetries
- Universal non-Hermitian skin effect in two and higher dimensions
- Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
- Observation of hybrid higher-order skin-topological effect in non-Hermitian topolectrical circuits
- Observation of higher-order non-Hermitian skin effect
- Observation of arbitrary topological windings of a non-Hermitian band
- Observation of non-Bloch parity-time symmetry and exceptional points
- Non-Bloch topological invariants in a non-Hermitian domain-wall system
- Observation of non-Hermitian topological Anderson insulator in quantum dynamics
- Simulating non-Hermitian quasicrystals with single-photon quantum walks
- Magnetic suppression of non-Hermitian skin effects
- Detecting non-Bloch topological invariants in quantum dynamics
- Non-Bloch quench dynamics
- Cyclotron quantization and mirror-time transition on nonreciprocal lattices
- Self-healing of non-Hermitian topological skin modes
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- A comprehensive review on developments of synthetic dimensions
- Chiral quantum optics: recent developments, and future directions
- Quantum Criticality in Open Quantum Spin Chains with Nonreciprocity
- Nonlinear Non-Hermitian Skin Effect and Skin Solitons in Temporal Photonic Feedforward Lattices
- Self acceleration from spectral geometry in dissipative quantum-walk dynamics
- Liouvillian skin effect in quantum neural networks
- Quantum Pontus-Mpemba Effect Enabled by the Liouvillian Skin Effect
- Hermitian and non-Hermitian topology in active matter
- Topological Sensing in the Dynamics of Quantum Walks with Defects
- Quantum walk on a square lattice with identical particles
- Topological Phase Transitions and Edge-State Transfer in Time-Multiplexed Quantum Walks
- Quantum walk with coherent multiple translations induces fast quantum gate operations
- Magnetic Control of the Non-Hermitian Skin Effect in Two-Dimensional Lattices
- Reshaping coupled bosonic networks: A bipartite-graph framework for optimal quantum excitation transfer