Controlling Rydberg excitations using ion core transitions in alkaline
earth atom tweezer arrays
- URL: http://arxiv.org/abs/2110.06902v1
- Date: Wed, 13 Oct 2021 17:32:47 GMT
- Title: Controlling Rydberg excitations using ion core transitions in alkaline
earth atom tweezer arrays
- Authors: Alex P Burgers, Shuo Ma, Sam Saskin, Jack Wilson, Miguel A Alarc\'on,
Chris H Greene, Jeff D Thompson
- Abstract summary: 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.
- Score: 0.6896268759002248
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Scalable, local control over gate operations is an outstanding challenge in
the field of quantum computing and programmable quantum simulation 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. In this work, we point out that photon scattering errors from
light shifts can be significantly reduced if the light shift is applied to the
Rydberg state instead of the ground state, which can be realized in Rydberg
states of alkaline earth atoms using optical transitions in the ion core. As a
proof-of-concept, 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$^+$ $6s\rightarrow6p_{1/2}$ transition. We also perform
detailed spectroscopy of the induced light shift and scattering rates of the
$6sns$ $^3$S$_1$ Rydberg states and reveal the existence of satellite lines
where losses from autoionization are strongly suppressed. This work can be
readily extended to implement local gate operations in Rydberg atom arrays.
Related papers
- 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) - Long-Lived Circular Rydberg Qubits of Alkaline-Earth Atoms in Optical
Tweezers [0.0]
Coherence time and gate fidelities in Rydberg atom quantum simulators and computers are fundamentally limited by the Rydberg state lifetime.
Circular Rydberg states are highly promising candidates to overcome this limitation by orders of magnitude.
We report the first realization of alkaline-earth circular Rydberg atoms trapped in optical tweezers.
arXiv Detail & Related papers (2024-01-19T11:07:47Z) - Strongly subradiant states in planar atomic arrays [39.58317527488534]
We study collective dipolar oscillations in finite planar arrays of quantum emitters in free space.
We show that the external coupling between the collective states associated with the symmetry of the array and with the quasi-flat dispersion of the corresponding infinite lattice plays a crucial role in the boost of their radiative lifetime.
arXiv Detail & Related papers (2023-10-10T17:06:19Z) - High-fidelity parallel entangling gates on a neutral atom quantum
computer [41.74498230885008]
We report the realization of two-qubit entangling gates with 99.5% fidelity on up to 60 atoms in parallel.
These advances lay the groundwork for large-scale implementation of quantum algorithms, error-corrected circuits, and digital simulations.
arXiv Detail & Related papers (2023-04-11T18:00:04Z) - All optical quantum information processing via a single step Rydberg
blockade gate [0.0]
One of the critical elements in the realization of the quantum internet are deterministic two-photon gates.
This article discusses an approach to realize high fidelity $CZ$ photonic gate by storing both control and target photons within an atomic ensemble.
arXiv Detail & Related papers (2022-11-13T19:20:14Z) - 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) - Quantum density matrix theory for a laser without adiabatic elimination
of the population inversion: transition to lasing in the class-B limit [62.997667081978825]
No class-B quantum density-matrix model is available to date, capable of accurately describing coherence and photon correlations within a unified theory.
Here we carry out a density-matrix theoretical approach for generic class-B lasers, and provide closed equations for the photonic and atomic reduced density matrix in the Fock basis of photons.
This model enables the study of few-photon bifurcations and non-classical photon correlations in class-B laser devices, also leveraging quantum descriptions of coherently coupled nanolaser arrays.
arXiv Detail & Related papers (2022-05-26T16:33:51Z) - Optical coherent manipulation of alkaline-earth circular Rydberg states [0.0]
We show how to use the electrostatic coupling between the two electrons of strontium to coherently manipulate a circular Rydberg state with optical pulses.
This experiment opens the way to a state-selective spatially-resolved non-destructive detection of the circular states.
arXiv Detail & Related papers (2021-11-29T12:52:09Z) - Quantum Computing with Circular Rydberg Atoms [0.0]
We propose a novel approach to Rydberg atom arrays using long-lived circular Rydberg states in optical traps.
We project that arrays of hundreds of circular Rydberg atoms with two-qubit gate errors around $10-5$ can be realized using current technology.
arXiv Detail & Related papers (2021-03-23T18:00:00Z) - Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of
Strontium [0.0]
Strontium circular Rydberg atoms with a core excited in a $4D$ metastable level are impervious to autoionization over more than a few millisecond time scale.
We observe singlet to triplet transitions due to the core optical manipulations, opening the way to a quantum microwave to optical interface.
arXiv Detail & Related papers (2020-06-29T10:28:36Z) - High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms [48.093689931392866]
Controlled two-qubit entanglement generation has so far been limited to alkali species.
We demonstrate a novel approach utilizing the two-valence electron structure of individual alkaline-earth Rydberg atoms.
We find fidelities for Rydberg state detection, single-atom Rabi operations, and two-atom entanglement surpassing previously published values.
arXiv Detail & Related papers (2020-01-13T18:42:42Z)
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.