Coherence enhancement of Rydberg polaritons

• URL: http://arxiv.org/abs/2607.12513v1
• Date: Tue, 14 Jul 2026 08:47:18 GMT
• Title: Coherence enhancement of Rydberg polaritons
• Abstract summary: Quantum nonlinear optics by Rydberg polaritons can enable single-photon transistor and switch, single-photon source, and deterministic quantum information processing.<n>Here, we devise a scheme to significantly enhance the coherence of Rydberg polariton by letting atoms it remember their velocities, or, alternatively, by it changing the phase of Rydberg polariton according to its storage time.
• Score: 15.63692559825177
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum nonlinear optics by Rydberg polaritons can enable single-photon transistor and switch, single-photon source, and deterministic quantum information processing. A major hindrance in this study is the fast motional decoherence. Here, we devise a scheme to significantly enhance the coherence of Rydberg polariton by letting the atoms {\it remember} their velocities, or, alternatively, by {\it changing} the phase of Rydberg polariton according to its storage time. After the Rydberg polariton is prepared with a Rydberg state $|r_1\rangle$, i.e., during the storage time, two laser fields induce a transition between $|r_1\rangle$ and a nearby Rydberg state $|r_2\rangle$ via a low-lying intermediate state $\lvert f\rangle$ which is largely detuned. In particular, we find that either a $2π\mathbb{N}$ protocol, a $π$-wait-$π$ protocol, or a wait-$π$ protocol, along with an appropriate choice of $\lvert f\rangle$ can lead to a phase-coherent Rydberg polariton upon its retrieval. Importantly, the coherent transition between $|r_1\rangle$ and $|r_2\rangle$ ensures that the Rydberg polariton can block the Rydberg excitation of nearby atoms as in usual applications of Rydberg polaritons. Numerics show that the theory can nearly completely eliminate the motional dephasing, leaving Rydberg-state decay as the only fundamental channel of decoherence. This sheds light on a broad application of Rydberg-mediated quantum nonlinear optics.

Related papers

• Protocols of coherent motion control for an interaction-driven Rydberg gate [0.0]
  Current two-qubit gates operate in the Rydberg-blockade regime.<n>We propose a set of techniques based on coherent control of the atomic motion.
  arXiv  Detail & Related papers  (2026-07-25T08:03:46Z)
• Barium-based Rydberg atom quantum technologies with long Rydberg coherence [3.1282791520499234]
  We show that a 649nm$-$658nm two-photon excitation of the $6sng1G_4$ Rydberg state from a long-lived d-orbital clock state of barium can be achieved.<n>These can benefit quantum computing based on individually trapped neutral atoms, and can enable long-lived Rydberg polaritons in atomic media.
  arXiv  Detail & Related papers  (2026-07-13T09:03:12Z)
• High-fidelity entanglement and coherent multi-qubit mapping in an atom array [34.82692226532414]
  We show the creation and coherent mapping of entangled quantum states across multiple qubits in Ytterbium-171 tweezer arrays.<n>Results establish a versatile architecture that advances multiple fields of quantum information science while also establishing bridges between them.
  arXiv  Detail & Related papers  (2025-06-16T15:58:53Z)
• The quantum beam splitter with many partially indistinguishable photons: multiphotonic interference and asymptotic classical correspondence [44.99833362998488]
  We present the analysis of the quantum two-port interferometer in the $n rightarrow infty$ limit of $n$ partially indistinguishable photons. Our main result is that the output distribution is dominated by the $O(sqrtn)$ channels around a certain $j*$ that depends on the degree of indistinguishability. The form is essentially the doubly-humped semi-classical envelope of the distribution that would arise from $2 j*$ indistinguishable photons, and which reproduces the corresponding classical intensity distribution.
  arXiv  Detail & Related papers  (2023-12-28T01:48:26Z)
• Optimal optical Ferris wheel solitons in a nonlocal Rydberg medium [25.228768583132346]
  We propose a scheme for the creation of stable optical Ferris wheel(OFW) solitons in a nonlocal Rydberg electromagnetically induced transparency medium. Our study provides a straightforward route to generate spatial optical solitons in the nonlocal response region of cold Rydberg gases.
  arXiv  Detail & Related papers  (2023-02-14T03:49:05Z)
• Driving alkali Rydberg transitions with a phase-modulated optical lattice [0.0]
  We develop and demonstrate a spectroscopic method for Rydberg-Rydberg transitions using a standing-wave laser field. The method is based on the ponderomotive interaction of the Rydberg electron, which has less-restrictive selection rules than electric-dipole couplings. The method paves the way for optical Doppler-free high-precision spectroscopy of Rydberg-Rydberg transitions and for spatially-selective qubit manipulation.
  arXiv  Detail & Related papers  (2022-10-04T19:46:55Z)
• Rydberg ions in coherent motional states: A new method for determining the polarizability of Rydberg ions [71.05995184390709]
  We present a method for measuring the polarizability of Rydberg ions confined in a Paul trap. The method is easy-to-implement and applicable to different Rydberg states regardless of their principal or angular quantum numbers.
  arXiv  Detail & Related papers  (2022-08-23T17:56:50Z)
• Anderson localization of a Rydberg electron [68.8204255655161]
  Rydberg atoms inherit their level structure, symmetries, and scaling behavior from the hydrogen atom. limit is reached by simultaneously increasing the number of ground state atoms and the level of excitation of the Rydberg atom.
  arXiv  Detail & Related papers  (2021-11-19T18:01:24Z)
• Controlling Rydberg excitations using ion core transitions in alkaline earth atom tweezer arrays [0.6896268759002248]
  Local control over gate operations is an outstanding challenge in quantum computing with Rydberg atom arrays. One approach is to use a global field to excite atoms to the Rydberg state, and tune individual atoms in and out of resonance via local light shifts. We experimentally demonstrate global control of Rydberg excitations in a Yb optical tweezer array via light shifts induced by a laser tuned near the Yb$+$ $6srightarrow6p_1/2$ transition.
  arXiv  Detail & Related papers  (2021-10-13T17:32:47Z)
• Entanglement between a telecom photon and an on-demand multimode solid-state quantum memory [52.77024349608834]
  We show the first demonstration of entanglement between a telecom photon and a collective spin excitation in a multimode solid-state quantum memory. We extend the entanglement storage in the quantum memory for up to 47.7$mu$s, which could allow for the distribution of entanglement between quantum nodes separated by distances of up to 10 km.
  arXiv  Detail & Related papers  (2021-06-09T13:59:26Z)
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms [4.394728504061752]
  Alkaline-earth-like(AEL) atoms with two valence electrons and a nonzero nuclear spin can be excited to Rydberg state for quantum computing. We provide two solutions to this outstanding challenge with realistic data of well-studied AEL isotopes.
  arXiv  Detail & Related papers  (2021-03-25T13:55:04Z)
• Single-site Rydberg addressing in 3D atomic arrays for quantum computing with neutral atoms [4.394728504061752]
  We show how to selectively excite one qubit deep in a 3D atomic array to Rydberg states. This makes it possible to design large-scale neutral-atom information processor based on Rydberg blockade.
  arXiv  Detail & Related papers  (2021-01-31T00:09:47Z)
• Anisotropy-mediated reentrant localization [62.997667081978825]
  We consider a 2d dipolar system, $d=2$, with the generalized dipole-dipole interaction $sim r-a$, and the power $a$ controlled experimentally in trapped-ion or Rydberg-atom systems. We show that the spatially homogeneous tilt $beta$ of the dipoles giving rise to the anisotropic dipole exchange leads to the non-trivial reentrant localization beyond the locator expansion.
  arXiv  Detail & Related papers  (2020-01-31T19:00:01Z)

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.