Multiplexed storage and interaction of Rydberg spinwaves via the gradient echo memory protocol

• URL: http://arxiv.org/abs/2607.22466v1
• Date: Fri, 24 Jul 2026 16:29:53 GMT
• Title: Multiplexed storage and interaction of Rydberg spinwaves via the gradient echo memory protocol
• Abstract summary: Rydberg excitations offer controllable interactions for quantum information processing, sensing, and nonlinear quantum optics.<n>New type of multi-photon addressing and interfacing scheme allows us to generate collective Rydberg excitations with near-zero momentum transfer.<n>This enables storage and manipulation of long-lived Rydberg spinwaves in a multimode quantum memory.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Collective Rydberg excitations offer strong and controllable interactions for quantum information processing, sensing, and nonlinear quantum optics, but their integration with temporally or spectrally multiplexed schemes, such as the Gradient Echo Memory (GEM) protocol, is hindered by rapid motional dephasing caused by the large spinwave wavevector. We demonstrate a new type of multi-photon addressing and interfacing scheme (with levels following the shape of the letter Ń) that allows us to generate collective Rydberg excitations with near-zero momentum transfer, extending the Rydberg spinwave lifetime almost tenfold. The scheme relies on two additional off-resonant driving fields arranged at a magic angle, forming a closed wavevector loop while remaining compatible with GEM-induced inhomogeneous broadening. This enables storage and manipulation of long-lived Rydberg spinwaves in a multimode quantum memory. Using microwave coupling between neighboring Rydberg states, we can control the attenuation between stored excitation modes by interaction-induced decay and demonstrate interaction-controlled diffraction of a retrieved optical signal. Our results reestablish compatibility between Rydberg excitations and GEM, providing a route toward multimode quantum memories with controllable long-range interactions and applications in quantum networking, sensing, and quantum information processing.

Related papers

• Temporal quantum interference in many-body programmable atom arrays [0.0]
  We experimentally achieve controllable vacuum-state freezing in programmable Rydberg arrays of up to 100 atoms through many-body Stckelberg interference.<n>Our results establish temporal interference as a scalable microscopic mechanism for Floquet control, enabling predictive many-body state engineering in large-scale platforms.
  arXiv  Detail & Related papers  (2025-11-12T19:00:03Z)
• Collective dissipation engineering of interacting Rydberg atoms [6.334138773045702]
  We realize a tunable, state-resolved laser-induced loss channel for individual Rydberg atoms.<n>We observe interaction-driven shifts of the exceptional point separating quantum Zeno and anti-Zeno regimes.<n>We theoretically show that when this mechanism is extended to many-body chains it allows for the dissipative distillation of unwanted spin configurations.
  arXiv  Detail & Related papers  (2025-09-08T06:58:53Z)
• Quantum channel for modeling spin-motion dephasing in Rydberg chains [44.99833362998488]
  We introduce a quantum channel to model the dissipative dynamics resulting from the coupling between spin and motional degrees of freedom in chains of neutral atoms with Rydberg interactions.<n>We benchmark the accuracy of our approach against exact diagonalization for small systems, identifying its regime of validity and the onset of perturbative breakdown.<n>We then apply the quantum channel to compute fidelity loss during transport of single-spin excitations across extended Rydberg chains in intractable regimes via exact diagonalization.
  arXiv  Detail & Related papers  (2025-06-30T17:37:38Z)
• Fast entangling gates for Rydberg atoms via resonant dipole-dipole interaction [0.0]
  We introduce a novel scheme for entangling gates using four atomic levels per atom.<n>A laser field couples the qubit to one of the two Rydberg states, while a microwave field drives transitions between the two Rydberg states.<n>We show that controlled-Z gates can be realized in this scheme without requiring optical phase modulation.
  arXiv  Detail & Related papers  (2024-11-07T19:00:08Z)
• Realizing fracton order from long-range quantum entanglement in programmable Rydberg atom arrays [45.19832622389592]
  Storing quantum information requires battling quantum decoherence, which results in a loss of information over time. To achieve error-resistant quantum memory, one would like to store the information in a quantum superposition of degenerate states engineered in such a way that local sources of noise cannot change one state into another. We show that this platform also allows to detect and correct certain types of errors en route to the goal of true error-resistant quantum memory.
  arXiv  Detail & Related papers  (2024-07-08T12:46:08Z)
• Dipolar quantum solids emerging in a Hubbard quantum simulator [45.82143101967126]
  Long-range and anisotropic interactions promote rich spatial structure in quantum mechanical many-body systems. We show that novel strongly correlated quantum phases can be realized using long-range dipolar interaction in optical lattices. This work opens the door to quantum simulations of a wide range of lattice models with long-range and anisotropic interactions.
  arXiv  Detail & Related papers  (2023-06-01T16:49:20Z)
• Variational waveguide QED simulators [58.720142291102135]
  Waveguide QED simulators are made by quantum emitters interacting with one-dimensional photonic band-gap materials. Here, we demonstrate how these interactions can be a resource to develop more efficient variational quantum algorithms.
  arXiv  Detail & Related papers  (2023-02-03T18:55:08Z)
• Single spin Landau-Zener-St\"uckelberg-Majorana interferometry of Zeeman-split states with strong spin-orbit interaction in a double quantum dot [0.0]
  An interplay between spin-conserving and spin-flip tunneling processes with the Electric Dipole Spin Resonance is studied. Results are applicable for both electron and hole systems with strong spin-orbit interaction.
  arXiv  Detail & Related papers  (2022-08-31T16:55:05Z)
• Topological multi-mode waveguide QED [49.1574468325115]
  We show how to take advantage of topologically protected propagating modes by interfacing them with quantum emitters. Such capabilities pave the way for generating quantum gates among topologically protected photons as well as generating more complex entangled states of light in topological channels.
  arXiv  Detail & Related papers  (2022-07-05T14:48:50Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Heisenberg treatment of multiphoton pulses in waveguide QED with time-delayed feedback [62.997667081978825]
  We propose a projection onto a complete set of states in the Hilbert space to decompose the multi-time correlations into single-time matrix elements. We consider the paradigmatic example of a two-level system that couples to a semi-infinite waveguide and interacts with quantum light pulses.
  arXiv  Detail & Related papers  (2021-11-04T12:29:25Z)
• A cold atom temporally multiplexed quantum memory with cavity-enhanced noise suppression [0.0]
  We demonstrate a temporally multiplexed quantum repeater node in a laser-cooled cloud of $87$Rb atoms. By embedding the atomic ensemble inside a low finesse optical cavity, the additional noise generated in multi-mode operation is strongly suppressed. The reported capability is a key element of a quantum repeater architecture based on multiplexed quantum memories.
  arXiv  Detail & Related papers  (2020-03-18T18:13:40Z)

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.