Alignment and Optimisation of Optical Tweezers on Trapped Ions
- URL: http://arxiv.org/abs/2406.06721v1
- Date: Mon, 10 Jun 2024 18:32:43 GMT
- Title: Alignment and Optimisation of Optical Tweezers on Trapped Ions
- Authors: M. Mazzanti, C. Robalo Pereira, N. A. Diepeveen, B. Gerritsen, Z. Wu, Z. E. D. Ackerman, L. P. H. Gallagher, A. Safavi-Naini, R. Gerritsma, R. X. Schüssler,
- Abstract summary: We find a smallest tweezer waist of $2.3(2),mu$m, which is in agreement with the theoretical minimal attainable waist of $2.5(2),mu$m in our setup.
We investigate the effects of optical forces and coherent population trapping on the ion.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: This paper presents a routine to align an optical tweezer on a single trapped ion and use the ion as a probe to characterize the tweezer. We find a smallest tweezer waist of $2.3(2)\,\mu$m, which is in agreement with the theoretical minimal attainable waist of $2.5(2)\,\mu$m in our setup. We characterize the spatial dependence of the tweezer Rabi frequency which is suppressed by a factor of 19(3) in the immediate surrounding of the ion. We investigate the effects of optical forces and coherent population trapping on the ion. Finally, we show that the challenges posed by these forces can be overcome, and that the number of tweezers can be easily scaled up to reach several ions by using a spatial light modulator.
Related papers
- State-dependent control of the motional modes of trapped ions using an integrated optical lattice [0.0]
We use a single ion to map the optical potential landscape over many periods of the standing-wave field.
We observe a state-dependent trap-frequency shift of $2pitimes 3.33(4)$ kHz, corresponding to a bare optical potential of $2pitimes 76.8(5)$ kHz for the electronic ground state.
arXiv Detail & Related papers (2024-11-05T17:55:35Z) - Individual addressing and state readout of trapped ions utilizing rf
micromotion [0.0]
We induce precise amounts of excess micromotion on individual ions by adjusting the local static electric field they experience.
Micromotion modulates the coupling of an ion to laser fields, ideally tuning it from its maximum value to zero.
arXiv Detail & Related papers (2024-02-08T17:41:29Z) - Engineering the impact of phonon dephasing on the coherence of a WSe$_{2}$ single-photon source via cavity quantum electrodynamics [36.88715167286119]
Emitter dephasing is one of the key issues in the performance of solid-state single photon sources.
We show that it is possible to tune and engineer the coherence of photons emitted from a single WSe$$ monolayer dot via selectively coupling it to a spectral cavity resonance.
arXiv Detail & Related papers (2023-07-13T16:41:06Z) - A low-crosstalk double-side addressing system using acousto-optic
deflectors for atomic ion qubits [43.30164109590217]
We demonstrate a low-crosstalk double-side addressing system based on a pair of acousto-optic deflectors (AODs)
The AODs addressing method can flexibly and parallelly address arbitrary ions between which the distance is variable in a chain.
We employ two 0.4NA objective lenses in both arms of the Raman laser and obtain a beam waist of 0.95$mumathrmm$, resulting in a Rabi rate crosstalk as low as $6.32times10-4$ when the neighboring ion separation is about 5.5$mu
arXiv Detail & Related papers (2023-06-02T07:12:59Z) - An accordion superlattice for controlling atom separation in optical
potentials [0.0]
We propose a method for separating trapped atoms in optical lattices by large distances.
By coherently loading atoms between the two superimposed potentials, we can reach, in principle, arbitrarily large atom separations.
The method can be applied to neutral-atom quantum computing with optical tweezers, as well as quantum simulation of low-entropy many-body states.
arXiv Detail & Related papers (2023-01-10T19:00:00Z) - Near-Surface Electrical Characterisation of Silicon Electronic Devices
Using Focused keV Ions [45.82374977939355]
We show how to implant low-energy ions into silicon devices featuring an enlarged 60x60 $mu$m sensitive area.
Despite the weak internal electric field, near-unity charge collection efficiency is obtained from the entire sensitive area.
This can be explained by the critical role that the high-quality thermal gate oxide plays in the ion detection response.
arXiv Detail & Related papers (2022-01-27T06:29:46Z) - Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using
Quantum Logic [52.77024349608834]
We introduce a novel algorithmic cooling protocol for transferring phonons from poorly- to efficiently-cooled modes.
We demonstrate it experimentally by simultaneously bringing two motional modes of a Be$+$-Ar$13+$ mixed Coulomb crystal close to their zero-point energies.
We reach the lowest temperature reported for a highly charged ion, with a residual temperature of only $Tlesssim200mathrmmu K$ in each of the two modes.
arXiv Detail & Related papers (2021-02-24T17:46:15Z) - Trapping, Shaping and Isolating of Ion Coulomb Crystals via
State-selective Optical Potentials [55.41644538483948]
In conventional ion traps, the trapping potential is close to independent of the electronic state, providing confinement for ions dependent on their charge-to-mass ratio $Q/m$.
Here we experimentally study optical dipole potentials for $138mathrmBa+$ ions stored within two distinctive traps operating at 532 nm and 1064 nm.
arXiv Detail & Related papers (2020-10-26T14:36:48Z) - Ancilla mediated qubit readout and heralded entanglement between
rare-earth dopant ions in crystals [68.8204255655161]
We show how a Bayesian analysis exhausts the information about the state of the qubit from the optical signal of the ancilla ion.
We extend the architecture to ions residing in two remote cavities, and we show how continuous monitoring of fluorescence signals from the two ancilla ions leads to entanglement of the qubit ions.
arXiv Detail & Related papers (2020-07-06T16:31:46Z)
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.