Related papers: Penning-trap eigenfrequency measurements with optical radiofrequency detectors

Penning-trap eigenfrequency measurements with optical radiofrequency detectors

URL: http://arxiv.org/abs/2308.14884v1
Date: Mon, 28 Aug 2023 20:13:33 GMT
Title: Penning-trap eigenfrequency measurements with optical radiofrequency detectors
Authors: Joaqu\'in Berrocal, Alejandro Hern\'andez, \'I\~nigo Arrazola, Francisco Dom\'inguez, Ana Carrasco-Sanz, Francisco Javier Fern\'andez, Michael Block and Daniel Rodr\'iguez
Abstract summary: We measure the cyclotron-frequency ratios of the pairs $42$Ca$+$-40$Ca$+$ in a 7-tesla Penning trap. A single laser-cooled ion serves as a radiofrequency detector covering a broad-band frequency spectrum from kHz to a few MHz.
Score: 34.38328889640297
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We use an electric-dipole laser-driven transition to precisely measure the cyclotron-frequency ratios of the pairs $^{42}$Ca$^+$-$^{40}$Ca$^+$, $^{44}$Ca$^+$-$^{40}$Ca$^+$ and $^{48}$Ca$^+$-$^{40}$Ca$^+$ in a 7-tesla Penning trap. A single laser-cooled ($T\approx 1$~mK) ion serves, together with photon-counting and/or photon-imaging units, as a radiofrequency detector covering a broad-band frequency spectrum, in the present case from kHz to a few MHz. Such detectors ($^{40,42,44,48}$Ca$^{\scriptsize{+}}$) allow measuring extremely small forces, with measured normalized sensitivities down to $7.4(3.5)$ yN$/\sqrt{\text{Hz}}$ and $24.9(9.9)$ yN$/\sqrt{\text{Hz}}$ in the MHz and kHz regime, respectively. The direct determination of the ions' amplitudes makes a cyclotron-frequency measurement process more robust against inhomogeneities of the magnetic field and/or deviations of the electric quadrupole field due to mechanical imperfections of the trap.

Related papers

Low-noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors [0.0]
Superconducting nanowire single-photon detectors (SNSPDs) have been widely used to study the discrete nature of quantum states of light. We show that SNSPDs can also be used to study continuous variables of optical quantum states by performing homodyne detection at a bandwidth of $400mathrmkHz$.
arXiv Detail & Related papers (2023-07-31T13:47:45Z)
Spectroscopy of the $^{85}$Rb 4$D_{3/2}$ state for hyperfine-structure determination [0.0]
We report a measurement of the hyperfine-structure constants of the $85$Rb 4$D_3/2$ state using a two-photon 5$S_1/2rightarrow$4$D_3/2$ transition. The hyperfine transitions are probed by measuring the transmission of the low-power 795-nm lower-stage laser beam through a cold-atom sample.
arXiv Detail & Related papers (2023-04-29T14:00:07Z)
Very-high- and ultrahigh- frequency electric field detection using high angular momentum Rydberg states [0.0]
We demonstrate resonant detection of very-high-frequency (VHF) to ultra-high-frequency (UHF) We find good agreement between measured spectra and predictions of quantum defect theory for principal quantum numbers $n=45$ to $70$. We utilize data and a numerical model incorporating a five-level master equation solution to estimate the fundamental sensitivity limits of our system.
arXiv Detail & Related papers (2022-05-25T15:48:28Z)
Rapid generation of all-optical $^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance [58.720142291102135]
We investigate the production of all-optical $39$K Bose-Einstein condensates with different scattering lengths using a Feshbach resonance near $33$ G. We are able to produce fully condensed ensembles with $5.8times104$ atoms within $850$ ms evaporation time at a scattering length of $232. Based on our findings we describe routes towards high-flux sources of ultra-cold potassium for inertial sensing.
arXiv Detail & Related papers (2022-01-12T16:39:32Z)
Emission of photon multiplets by a dc-biased superconducting circuit [0.0]
We observe the emission of bunches of $k geqslant 1$ photons by a circuit made of a microwave resonator in series with a voltage-biased tunable Josephson junction. The bunches are emitted at specific values $V_k$ of the bias voltage, for which each Cooper pair tunneling across the junction creates exactly k photons in the resonator.
arXiv Detail & Related papers (2021-11-18T10:12:59Z)
Precision measurement of the $^{43}$Ca$^{+}$ nuclear magnetic moment [0.0]
We report precision measurements of the nuclear magnetic moment of textsuperscript43Catextsuperscript+. The measurement is not corrected for diamagnetic shielding due to the bound electrons. We use our $mu_I$ value in combination with previous results, to extract the change in shielding constant of calcium ions due to solvation in D$$O: $Delta sigma = -0.00022(1)$.
arXiv Detail & Related papers (2021-05-21T13:44:01Z)
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)
High-Frequency Gravitational-Wave Detection Using a Chiral Resonant Mechanical Element and a Short Unstable Optical Cavity [59.66860395002946]
We suggest the measurement of the twist of a chiral mechanical element induced by a gravitational wave. The induced twist rotates a flat optical mirror on top of this chiral element, leading to the deflection of an incident laser beam. We estimate a gravitational wave strain sensitivity between 10-21/sqrtHz and 10-23/sqrtHz at around 10 kHz frequency.
arXiv Detail & Related papers (2020-07-15T20:09:43Z)
Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
arXiv Detail & Related papers (2020-04-05T16:27:11Z)
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.