Realization of a Quantum Topological Photon Pump

• URL: http://arxiv.org/abs/2608.00162v1
• Date: Fri, 31 Jul 2026 18:00:00 GMT
• Title: Realization of a Quantum Topological Photon Pump
• Abstract summary: We present the first experimental observation of a topological photon pump, using a transmon qubit coupled to a microwave cavity.<n>The pump operates in the quantum regime, pumping up from the vacuum state up to $approx 7$ photons, and produces demonstrably non-classical cavity states for the first few cycles.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Topological pumps transfer charge or energy at quantized rates determined solely by band topology, independent of the details of the control fields. Photon pumps operating on this principle could enable the robust preparation of non-classical states in a quantum cavity, even in the presence of control imperfections, but have not been directly observed. We present the first experimental observation of a topological photon pump, using a transmon qubit coupled to a microwave cavity. The pump operates in the quantum regime, pumping up from the vacuum state up to $\approx 7$ photons, and produces demonstrably non-classical cavity states for the first few cycles.

Related papers

• Quantum-Boosted Nonlinear Tunneling Driven by a Bright Squeezed Vacuum [21.147212401316636]
  tunneling ionization plays a pivotal role as it drives high-harmonic generation.<n>Quantum light, with its unique capacity for quantum noise redistribution, offers a transformative solution to boost nonlinear responses.<n>We report the first experiment of nonlinear tunneling ionization of the most fundamental system of atoms boosted by a quantum light.
  arXiv  Detail & Related papers  (2026-04-07T12:20:49Z)
• Multiply quantized vortex spectroscopy in a quantum fluid of light [0.0]
  We exploit the driven-dissipative nature of polaritonic fluids of light to create stationary, multiply charged vortices.<n>We observe common features of quantized vortices in quantum fluids and other rotating geometries like astrophysical compact objects.
  arXiv  Detail & Related papers  (2025-07-19T08:52:52Z)
• Topological anomalous Floquet photon pump [0.0]
  We propose a simple, experimentally viable protocol to realize non-adiabatic topological photon pumping mediated by a single qubit. For both quantized photons and external drive, the system exhibits a non-trivial topological phase across a broad range of parameter space.
  arXiv  Detail & Related papers  (2024-10-14T18:00:07Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Topological photon pumping in quantum optical systems [0.0]
  We introduce an extended version of the Rice-Mele model with all-to-all couplings. We numerically demonstrate topologically protected and dispersionless transport of a photon on a one-dimensional emitter chain.
  arXiv  Detail & Related papers  (2024-04-08T14:45:42Z)
• Stabilization of Hubbard-Thouless pumps through nonlocal fermionic repulsion [0.0]
  Thouless pumping represents a powerful concept to probe quantized topological invariants in quantum systems. We show that sufficiently large intersite interactions allow for an interaction-induced recovery of Thouless pumps. Our results provide a new mechanism to stabilize Thouless pumps in interacting quantum systems.
  arXiv  Detail & Related papers  (2023-08-25T13:34:42Z)
• Quantum vortices of strongly interacting photons [52.131490211964014]
  Vortices are hallmark of nontrivial dynamics in nonlinear physics. We report on the realization of quantum vortices resulting from a strong photon-photon interaction in a quantum nonlinear optical medium. For three photons, the formation of vortex lines and a central vortex ring attests to a genuine three-photon interaction.
  arXiv  Detail & Related papers  (2023-02-12T18:11:04Z)
• Probing the symmetry breaking of a light--matter system by an ancillary qubit [50.591267188664666]
  Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena. We experimentally observe the parity symmetry breaking of an ancillary Xmon artificial atom induced by the field of a lumped-element superconducting resonator. This result opens a way to experimentally explore the novel quantum-vacuum effects emerging in the deep-strong coupling regime.
  arXiv  Detail & Related papers  (2022-09-13T06:14:08Z)
• Demonstrating Quantum Microscopic Reversibility Using Coherent States of Light [58.8645797643406]
  We propose and experimentally test a quantum generalization of the microscopic reversibility when a quantum system interacts with a heat bath. We verify that the quantum modification for the principle of microscopic reversibility is critical in the low-temperature limit.
  arXiv  Detail & Related papers  (2022-05-26T00:25:29Z)
• Self-oscillating pump in a topological dissipative atom-cavity system [55.41644538483948]
  We report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator. Due to dissipation, the cavity field evolves between its two quadratures, each corresponding to a different centrosymmetric crystal configuration. This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models.
  arXiv  Detail & Related papers  (2021-12-21T19:57:30Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• Topological photon pairs in a superconducting quantum metamaterial [44.62475518267084]
  We use an array of superconducting qubits to engineer a nontrivial quantum metamaterial. By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations. We find not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits.
  arXiv  Detail & Related papers  (2020-06-23T07:04:27Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.