Grating magneto-optical traps with complicated level structures
- URL: http://arxiv.org/abs/2305.07732v2
- Date: Thu, 7 Sep 2023 20:25:52 GMT
- Title: Grating magneto-optical traps with complicated level structures
- Authors: D. S. Barker, P. K. Elgee, A. Sitaram, E. B. Norrgard, N. N. Klimov,
G. K. Campbell, S. Eckel
- Abstract summary: We study the forces and optical pumping within grating magneto-optical traps (MOTs) operating on transitions with non-trivial level structure.
Our results will aid the development of portable atom and molecule traps for time keeping, inertial navigation, and precision measurement.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the forces and optical pumping within grating magneto-optical traps
(MOTs) operating on transitions with non-trivial level structure. In contrast
to the standard six-beam MOT configuration, rate equation modelling predicts
that the asymmetric laser geometry of a grating MOT will produce spin-polarized
atomic samples. Furthermore, the Land\'e $g$-factors and total angular momenta
of the trapping transition strongly influence both the confinement and
equilibrium position of the trap. Using the intuition gained from the rate
equation model, we realize a grating MOT of fermionic $^{87}$Sr and observe
that it forms closer to the center of the trap's quadrupole magnetic field than
its bosonic counterpart. We also explore the application of grating MOTs to
molecule laser cooling, where the rate equations suggest that dual-frequency
operation is necessary, but not sufficient, for stable confinement for type-II
level structures. To test our molecule laser cooling models, we create grating
MOTs using the $D_1$ line of $^7$Li and see that only two of the four possible
six-beam polarization configurations operate in the grating geometry. Our
results will aid the development of portable atom and molecule traps for time
keeping, inertial navigation, and precision measurement.
Related papers
- Coherent Control of the Fine-Structure Qubit in a Single Alkaline-Earth
Atom [0.7033719572603241]
Raman coupling of qubit states promises rapid single-qubit rotations on par with the fast Rydberg-mediated two-body gates.
We demonstrate preparation, read-out, and coherent control of the qubit.
Our work opens the door for a so far unexplored qubit encoding concept for neutral atom based quantum computing.
arXiv Detail & Related papers (2024-01-19T13:22:27Z) - Antiferromagnetic bosonic $t$-$J$ models and their quantum simulation in tweezer arrays [0.0]
We propose an experimental scheme to realize bosonic t-J models via encoding the local Hilbert space in a set of three internal atomic or molecular states.
By engineering antiferromagnetic (AFM) couplings between spins, competition between charge motion and magnetic order similar to that in high-$T_c$ cuprates can be realized.
arXiv Detail & Related papers (2023-05-03T17:59:59Z) - Quantum Gate Generation in Two-Level Open Quantum Systems by Coherent
and Incoherent Photons Found with Gradient Search [77.34726150561087]
We consider an environment formed by incoherent photons as a resource for controlling open quantum systems via an incoherent control.
We exploit a coherent control in the Hamiltonian and an incoherent control in the dissipator which induces the time-dependent decoherence rates.
arXiv Detail & Related papers (2023-02-28T07:36:02Z) - Understanding the quantum Rabi ring using analogies to quantum magnetism [7.4718408862327985]
We map a quantum Rabi ring into an effective magnetic model containing the XY exchange and the Dzyaloshinskii Moriya (DM) interactions.
The mean-field behavior of both systems is almost identical, facilitating the description of the different phases in the quantum optical model.
arXiv Detail & Related papers (2022-07-15T21:37:04Z) - Gate-based spin readout of hole quantum dots with site-dependent
$g-$factors [101.23523361398418]
We experimentally investigate a hole double quantum dot in silicon by carrying out spin readout with gate-based reflectometry.
We show that characteristic features in the reflected phase signal arising from magneto-spectroscopy convey information on site-dependent $g-$factors in the two dots.
arXiv Detail & Related papers (2022-06-27T09:07:20Z) - Controlling the dynamics of ultracold polar molecules in optical
tweezers [0.0]
We study a prototypical scenario where two interacting polar molecules placed in separate traps are controlled using an external electric field.
This enables a quantum computing scheme in which the rotational structure is used to encode the qubit states.
arXiv Detail & Related papers (2021-10-11T18:25:02Z) - Relativistic aspects of orbital and magnetic anisotropies in the
chemical bonding and structure of lanthanide molecules [60.17174832243075]
We study the electronic and ro-vibrational states of heavy homonuclear lanthanide Er2 and Tm2 molecules by applying state-of-the-art relativistic methods.
We were able to obtain reliable spin-orbit and correlation-induced splittings between the 91 Er2 and 36 Tm2 electronic potentials dissociating to two ground-state atoms.
arXiv Detail & Related papers (2021-07-06T15:34:00Z) - Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear
qudit with an electronic ancilla [50.002949299918136]
We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms.
It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
arXiv Detail & Related papers (2021-03-15T21:38:41Z) - Efficient matrix-product-state preparation of highly entangled trial
states: Weak Mott insulators on the triangular lattice revisited [0.0]
We show that the simplest triangular lattice $J$-$K$ spin model with four-site ring exchange likely does not harbor a fully gapless U(1) spinon Fermi surface.
Our methodology paves the way to fully resolve other controversial problems in the fields of frustrated quantum magnetism and strongly correlated electrons.
arXiv Detail & Related papers (2020-09-25T20:57:12Z) - Electrically tuned hyperfine spectrum in neutral
Tb(II)(Cp$^{\rm{iPr5}}$)$_2$ single-molecule magnet [64.10537606150362]
Both molecular electronic and nuclear spin levels can be used as qubits.
In solid state systems with dopants, an electric field was shown to effectively change the spacing between the nuclear spin qubit levels.
This hyperfine Stark effect may be useful for applications of molecular nuclear spins for quantum computing.
arXiv Detail & Related papers (2020-07-31T01:48:57Z) - Optimal coupling of HoW$_{10}$ molecular magnets to superconducting
circuits near spin clock transitions [85.83811987257297]
We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides.
Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
arXiv Detail & Related papers (2019-11-18T11:03:06Z)
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.