We experimentally study the real-time susceptibility of trapped-ion quantum systems to small doses ionizing radiation. expose an ion-trap apparatus a variety $\alpha$, $\beta$, and $\gamma$ sources measure resulting changes in qubit lifetimes, coherence times, gate fidelities, motional heating rates. found no quantifiable degradation ion trap performance presence low-dose radiation for any meas...

The study of charged particles’ dynamics in a Paul trap is the foundation of its wide-ranging applications, including analyzing proteins, determining isotope ratios, and constructing a quantum computer. However, in the simplest case of two-particle dynamics, there remains a controversy on whether a two-ion planar crystal undergoes an order→chaos transition at a critical trap parameter value. Vi...

We have demonstrated that the ion current resulting from collisions between metastable krypton atoms in a magneto-optical trap can be used to precisely measure the trap loading rate. We measured both the ion current of the abundant isotope 83Kr (isotopic abundance=11%) and the single-atom counting rate of the rare isotope 85Kr (isotopic abundance∼1×10(-11)), and found the two quantities to be p...

We describe a new mass spectrometric technique that is based on the use of a linear electrostatic ion trap and a newly discovered self-bunching phenomenon. Ions are stored in the trap and their oscillation frequencies are determined by Fourier transform of their oscillation times. Using this system, we demonstrate that it is possible to simultaneously trap several masses and obtain their mass s...

Individual laser-cooled 24Mg+ ions are confined in a linear Paul trap with a novel geometry where gold electrodes are located in a single plane and the ions are trapped 40 microm above this plane. The relatively simple trap design and fabrication procedure are important for large-scale quantum information processing (QIP) using ions. Measured ion motional frequencies are compared to simulations...

We present a model as well as experimental results for a surface electrode radiofrequency Paul trap that has a circular electrode geometry well suited for trapping single ions and two-dimensional planar ion crystals. The trap design is compatible with microfabrication and offers a simple method by which the height of the trapped ions above the surface may be changed in situ. We demonstrate trap...

We describe the construction and operation of a segmented linear Paul trap, fabricated in printed-circuit-board technology with an electrode segment width of 500μm. We prove the applicability of this technology to reliable ion trapping and report the observation of Doppler-cooled ion crystals of 40Ca with this kind of trap. Measured trap frequencies agree with numerical simulations at the level...

Ion trap mass spectrometry has developed though several stages to their current stage of relatively high performance and increasing popularity [1]. Quadrupole ion trap (QIT) invented by Paul and Steinwedel [2] has been widely applied to mass spectrometry [3-6], ion cooling and spectroscopy [7], frequency standards [8], quantum computing [9] and so on. To apply to various objectives, various geo...

We present a number of alternative designs for Penning ion traps suitable for quantum information processing (QIP) applications with atomic ions. The first trap design is a simple array of long straight wires which allows easy optical access. A prototype of this trap has been built to trap Ca + and a simple electronic detection scheme has been employed to demonstrate the operation of the trap. ...