Mark Kokish
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View article: High-fidelity light-shift gate for clock-state qubits
High-fidelity light-shift gate for clock-state qubits Open
To date, the highest fidelity quantum logic gates between two qubits have\nbeen achieved with variations on the geometric-phase gate in trapped ions, with\nthe two leading variants being the Molmer-Sorensen gate and the light-shift\n(LS) g…
View article: Prospects for a polar-molecular-ion optical probe of varying proton-electron mass ratio
Prospects for a polar-molecular-ion optical probe of varying proton-electron mass ratio Open
Molecules with deep vibrational potential wells provide optical intervals sensitive to variation in the proton-electron mass ratio ($\mu$). On one hand, polar molecules are of interest since optical state preparation techniques have been d…
View article: Optical Pumping of TeH<sup>+</sup>: Implications for Search for Varying <em>m<sub>p</sub></em>/<em>m<sub>e</sub></em>
Optical Pumping of TeH<sup>+</sup>: Implications for Search for Varying <em>m<sub>p</sub></em>/<em>m<sub>e</sub></em> Open
Molecular overtone transitions provide optical frequency transitions sensitive to variation in the proton-to-electron mass ratio (μ = mp/me). However, robust molecular state preparation presents a challenge critical for achieving high p…
View article: Optical Frequency Trapped Ion Probe for a Varying Proton-to-Electron Mass Ratio
Optical Frequency Trapped Ion Probe for a Varying Proton-to-Electron Mass Ratio Open
Molecules with deep potential wells provide optical transitions sensitive to variation in the proton-to-electron mass ratio ($\mu$). Here we propose the molecular ion TeH$^+$ as a favorable candidate for an improved laboratory search for c…
View article: Raman sideband cooling of a 138Ba+ ion using a single Zeeman interval
Raman sideband cooling of a 138Ba+ ion using a single Zeeman interval Open
Motional ground state cooling and internal state preparation are important elements for quantum logic spectroscopy (QLS), a class of quantum information processing. Since QLS does not require the high gate fidelities usually associated wit…
View article: CymA and Exogenous Flavins Improve Extracellular Electron Transfer and Couple It to Cell Growth in Mtr-Expressing <i>Escherichia coli</i>
CymA and Exogenous Flavins Improve Extracellular Electron Transfer and Couple It to Cell Growth in Mtr-Expressing <i>Escherichia coli</i> Open
Introducing extracellular electron transfer pathways into heterologous organisms offers the opportunity to explore fundamental biogeochemical processes and to biologically alter redox states of exogenous metals for various applications. Wh…
View article: Trapped Ion Chain Thermometry and Mass Spectrometry through Imaging
Trapped Ion Chain Thermometry and Mass Spectrometry through Imaging Open
We demonstrate a spatial-imaging thermometry technique for ions in a one-dimensional Coulomb crystal by relating their imaged spatial extent along the linear radiofrequency ion trap axis to normal modes of vibration of coupled oscillators …
View article: Simple and compact nozzle design for laser vaporization sources
Simple and compact nozzle design for laser vaporization sources Open
We have developed and implemented a compact transparent nozzle for use in laser vaporization sources. This nozzle eliminates the need for an ablation aperture, allowing for a more intense molecular beam. We use this nozzle to prepare a mol…