Coexistence of directed momentum current and ballistic energy diffusion in coupled non-Hermitian kicked rotors
arXiv:2211.00831 · doi:10.1103/PhysRevA.107.032208
Abstract
We numerically investigate the quantum transport in a coupled kicked rotors with the -symmetric potential. We find that the spontaneous -symmetry breaking of wavefunctions emerges when the amplitude of the imaginary part of the complex potential is beyond a threshold value, which can be modulated by the coupling strength effectively. In the regime of the -symmetry breaking, the particles driven by the periodical kicks move unidirectionally in momentum space, indicating the emergence of a directed current. Meanwhile, with increasing the coupling strength, we find a transition from the ballistic energy diffusion to a kind of the modified ballistic energy diffusion where the width of the wavepacket also increases with time in a power law. Our findings suggest that the decoherence effect induced by the interplay between the inter-particle coupling and the non-Hermitian driving potential is responsible for these particular transport behaviors.
arXiv comment8 pages, 7 figures
References in corpus (62)
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Decoherence, einselection, and the quantum origins of the classical
- Non-Hermitian Physics
- Decoherence, the measurement problem, and interpretations of quantum mechanics
- Universal High-Frequency Behavior of Periodically Driven Systems: from Dynamical Stabilization to Floquet Engineering
- Cold atoms in cavity-generated dynamical optical potentials
- Topological Bands for Ultracold Atoms
- Experimental observation of the Anderson transition with atomic matter waves
- Quantum Chaos and Thermalization in Isolated Systems of Interacting Particles
- Unifying fast scrambling, thermalization and entanglement through the measurement of FOTOCs in the Dicke model
- Tunable transport with broken space-time symmetries
- PT-Symmetric Wave Chaos
- Many body localization and thermalization: insights from the entanglement spectrum
- Dynamical quantum phase transitions in non-Hermitian lattices
- Non-Hermitian Floquet topological phases with arbitrarily many real-quasienergy edge states
- Quantized Adiabatic Transport in Momentum Space
- Observation of the Anderson Metal-Insulator Transition with Atomic Matter Waves: Theory and Experiment
- Ballistic spin transport in a periodically driven integrable quantum system
- Phase transitions in a non-Hermitian Aubry-André-Harper model
- Linear entropy as an entanglement measure in two-fermion systems
- Virtual Parity-Time Symmetry
- Topological quantum walks in momentum space with a Bose-Einstein condensate
- Floquet topological phases with symmetry in all dimensions
- Quantum Walk in Momentum Space with a Bose-Einstein Condensate
- Stability of superdiffusion in nearly integrable spin chains
- Floquet topological phases in a spin-1/2 double kicked rotor
- Evidence for a Quantum-to-Classical Transition in a Pair of Coupled Quantum Rotors
- Omnidirectional Transport in Fully Reconfigurable Two Dimensional Optical Ratchets
- Dynamical evolution in a one-dimensional incommensurate lattice with symmetry
- Interaction-driven breakdown of dynamical localization in a kicked quantum gas
- Conservative chaotic map as a model of quantum many-body environment
- Dynamical Localization of Coupled Relativistic Kicked Rotors
- Defective Majorana zero modes in non-Hermitian Kitaev chain
- Operator Spreading in Quantum Maps
- Planck's quantum-driven integer quantum Hall effect in chaos
- Dynamical many-body localization in an integrable model
- Localization, quantum resonances and ratchet acceleration in a periodically-kicked -symmetric quantum rotator
- Many-Body Dynamical Localization in a Kicked Lieb-Liniger Gas
- Dynamics of the mean-field interacting quantum kicked rotor
- The ratchet effect and the transporting islands in the chaotic sea
- Prethermalization and Thermalization in Periodically-Driven Many-Body Systems away from the High-Frequency Limit
- Experimental realization of a momentum-space quantum walk
- Directed momentum current induced by the PT-symmetric driving
- Environmental engineering for quantum energy transport
- Inverse Currents in Hamiltonian Coupled Transport
- Intrinsic decoherence and classical-quantum correspondence in two coupled delta-kicked rotors
- Lyapunov spectrum scaling for classical many-body dynamics close to integrability
- Experimental observation of time singularity in classical-to-quantum chaos transition
- Irrational Non-Abelian Statistics for Non-Hermitian Generalization of Majorana Zero Modes
- Effective thermalization of a many-body dynamically localized Bose gas
- Super-exponential diffusion in nonlinear non-Hermitian systems
- Generating Synthetic Magnetism via Floquet Engineering Auxiliary Qubits in Phonon-Cavity-Based Lattice
- Experimental realization of an ideal Floquet disordered system
- Dynamical localization of interacting bosons in the few-body limit
- Effective protection of quantum coherence by non-Hermitian driving
- Quantum and Classical Superballistic Transport in a Relativistic Kicked-Rotor System
- Chaotic diffusion of complex trajectory and its quantum signature
- Linear entropy in quantum phase space
- Floquet engineering of Dirac cones on the surface of a topological insulator
- The Gross Pitaevski map as a chaotic dynamical system
- Directed transport and Floquet analysis for a periodically kicked wavepacket at a quantum resonance
- Subdiffusion in wave packets with periodically kicked interactions