A subwavelength atomic array switched by a single Rydberg atom
- URL: http://arxiv.org/abs/2207.09383v2
- Date: Mon, 24 Apr 2023 12:49:23 GMT
- Title: A subwavelength atomic array switched by a single Rydberg atom
- Authors: Kritsana Srakaew, Pascal Weckesser, Simon Hollerith, David Wei, Daniel
Adler, Immanuel Bloch, Johannes Zeiher
- Abstract summary: Enhancing light-matter coupling at the level of single quanta is essential for numerous applications in quantum science.
Cooperative optical response of subwavelength atomic arrays has been found to open new pathways for such strong light-matter couplings.
We demonstrate spatial control over the optical response of an atomically thin mirror formed by a subwavelength array of atoms in free space.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Enhancing light-matter coupling at the level of single quanta is essential
for numerous applications in quantum science. The cooperative optical response
of subwavelength atomic arrays has been found to open new pathways for such
strong light-matter couplings, while simultaneously offering access to multiple
spatial modes of the light field. Efficient single-mode free-space coupling to
such arrays has been reported, but the spatial control over the modes of
outgoing light fields has remained elusive. Here, we demonstrate such spatial
control over the optical response of an atomically thin mirror formed by a
subwavelength array of atoms in free space using a single controlled ancilla
atom excited to a Rydberg state. The switching behavior is controlled by the
admixture of a small Rydberg fraction to the atomic mirror, and consequently
strong dipolar Rydberg interactions with the ancilla. Driving Rabi oscillations
on the ancilla atom, we demonstrate coherent control of the transmission and
reflection of the array. These results represent a step towards the realization
of quantum coherent metasurfaces, the demonstration of controlled atom-photon
entanglement and deterministic engineering of quantum states of light.
Related papers
- Quantum Optics with Rydberg Superatoms [0.49478969093606673]
Quantum optics based on Rydberg atoms is a powerful platform for light manipulation at the few-photon level.
We review the derivation of the collective coupling between a Rydberg superatom and a single light mode.
We briefly review applications of Rydberg superatoms to quantum optics such as single-photon generation and single-photon subtraction.
arXiv Detail & Related papers (2023-12-06T18:11:04Z) - Dissipative transfer of quantum correlations from light to atomic arrays [0.0]
We consider an atomic array illuminated by a paraxial beam of a squeezed-vacuum field.
quantum-squeezing correlations are dissipatively transferred to the array atoms, resulting in an atomic spin-squeezed steady state.
We discuss applications in atomic clocks both in optical and microwave domains.
arXiv Detail & Related papers (2023-11-07T11:22:58Z) - Continuous wave quantum light control via engineered Rydberg induced
dephasing [17.857341127079305]
We analyze several variations of a single-photon optical switch operating in the continuous wave regime.
The devices are based on ensembles of Rydberg atoms that interact through van der Waals interaction.
arXiv Detail & Related papers (2023-09-19T18:39:24Z) - Correlated steady states and Raman lasing in continuously pumped and
probed atomic ensembles [68.8204255655161]
We consider an ensemble of Alkali atoms that are continuously optically pumped and probed.
Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state.
We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
arXiv Detail & Related papers (2022-05-10T06:54:54Z) - Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces.
With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
arXiv Detail & Related papers (2022-03-28T19:37:08Z) - Quantum single-photon control, storage, and entanglement generation with
planar atomic arrays [0.0]
We show how to achieve quantum control of an incident single-photon pulse by engineering a two-dimensional atomic array.
Control is achieved by controlling classically or quantum mechanically the ac Stark shifts of the atomic levels.
We illustrate the control by manipulating the phase, phase superposition, polarization, and direction of a transmitted or reflected photon.
arXiv Detail & Related papers (2021-08-09T10:23:33Z) - Tunable directional emission and collective dissipation with quantum
metasurfaces [62.997667081978825]
Subradiant excitations propagate through the atomic array with very long lifetimes.
We demonstrate that one can harness these excitations to obtain tunable directional emission patterns.
We also benchmark how these directional emission patterns translate into collective, anisotropic dissipative couplings.
arXiv Detail & Related papers (2021-07-01T14:26:33Z) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z) - Quantum interface between light and a one-dimensional atomic system [58.720142291102135]
We investigate optimal conditions for the quantum interface between a signal photon pulse and one-dimensional chain consisting of a varied number of atoms.
The efficiency of interaction is mainly limited by achieved overlap and coupling of the waveguide evanescent field with the trapped atoms.
arXiv Detail & Related papers (2020-04-11T11:43:54Z) - Quantum Hall phase emerging in an array of atoms interacting with
photons [101.18253437732933]
Topological quantum phases underpin many concepts of modern physics.
Here, we reveal that the quantum Hall phase with topological edge states, spectral Landau levels and Hofstadter butterfly can emerge in a simple quantum system.
Such systems, arrays of two-level atoms (qubits) coupled to light being described by the classical Dicke model, have recently been realized in experiments with cold atoms and superconducting qubits.
arXiv Detail & Related papers (2020-03-18T14:56:39Z) - A subradiant optical mirror formed by a single structured atomic layer [0.0]
We report on the direct observation of the cooperative subradiant response of a two-dimensional (2d) square array of atoms in an optical lattice.
We show that the array acts as an efficient mirror formed by only a single monolayer of a few hundred atoms.
arXiv Detail & Related papers (2020-01-03T11:55:05Z)
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.