Trapped atomic ions are standards for quantum information processing, serving as quantum
memories, hosts of quantum gates in quantum computers and simulators, and nodes of …

Electric-field noise near surfaces is a common problem in diverse areas of physics and a
limiting factor for many precision measurements. There are multiple mechanisms by which …

Direct experimental access to some of the most intriguing quantum phenomena is not
granted due to the lack of precise control of the relevant parameters in their naturally …

We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon
detector. We determine the hyperfine qubit state of a single Be+ 9 ion held in a surface …

Fast and efficient detection of the qubit state in trapped ion systems is critical for
implementing quantum error correction and performing fundamental tests such as a …

Atomic ions trapped in electromagnetic potentials have long been used for fundamental
studies in quantum physics. Over the past two decades, trapped ions have been …

We present the realization of a combined trapped-ion and optical cavity system, in which a
single Yb+ ion is confined by a micron-scale ion trap inside a 230 μ m-long optical fiber …

We report on the demonstration of fluorescence detection from a trapped ion using single-
photon avalanche photodiodes (SPADs) monolithically integrated with a microfabricated …

Integrated technologies greatly enhance the prospects for practical quantum information
processing and sensing devices based on trapped ions. High-speed and high-fidelity ion …

We present a method for measuring branching fractions for the decay of J= 1/2 atomic
energy levels to lower-lying states based on time-resolved recording of the atom's …