2020/10/30 by Zlata Fedorova, Christoph Dauer, Anna Sidorenko +4
Mathematics · Physics and Astronomy · #Classical mechanics #Dissipative system #Floquet theory #Hamiltonian (control theory) #Mathematics #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Ratchet #Spectroscopy and Quantum Chemical Studies #Theoretical physics #Work (physics) #cond-mat.mes-hall #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physrevresearch.3.013260
published as Phys. Rev. Research 3, 013260 (2021)
arxiv created 2020/10/30 · openalex publication_date 2021/03/19 · arxiv updated 2021/03/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We demonstrate transport rectification in a Hermitian Hamiltonian quantum ratchet by a dissipative, dynamic impurity. While the bulk of the ratchet supports transport in both directions, the properly designed loss function of the local impurity acts as a direction-dependent filter for the moving states. We analyze this scheme theoretically by making use of Floquet S-matrix theory. In addition, we provide direct experimental observation of one-way transmittance in periodically modulated plasmonic waveguide arrays containing a local impurity with engineered losses.