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Jiamin HOU (MPIK)Being one of the elementary particles in the Standard Model of physics, the atomic mass of the electron is closely linked to other fundamental constants, such as Rydberg constants and fine structure constant. A high-precision value of the electron mass is fundamental for the structure of matter on atomic and molecular scales and is also an important ingredient of the most stringent tests of...Go to contribution page
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Pauline Yzombard (Laboratoire Aime Cotton CNRS (FR))The AEGIS collaboration aims to create atoms of anti-hydrogen ($\bar{H}$) and to study the impact of gravity force on it. In a penning trap, a 3-body-reaction between an anti-proton and an atom of Positronium (Ps=e+ + e-) forms an $\bar{H}$. Then, $\bar{H}$ beam is horizontally accelerated to exit the trap and gravity measurements are performed via a deflectometer. To improve the...Go to contribution page
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Mr M. Sadegh Ebrahimi (GSI Darmstadt and Universität Heidelberg)Magnetic moments of electrons bound in highly charged ions provide access to effects of quantum electrodynamics (QED) in the extreme fields close to the ionic nucleus. The cryogenic Penning trap setup ARTEMIS is dedicated to determine the electronic $g$-factors of highly charged ions such as boron-like argon (Ar$^{13+}$) via the method of double-resonance spectroscopy. A closed cycle between...Go to contribution page
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Mr Maël SOUIDI (FEMTO-ST)The purpose of this work is to design and realize an optical atomic clock based on the 435,5nm quadrupole transition of the 171Yb+. The study aims at obtaining a frequency stability of 10-14 at one second of integration time in a complete setup volume of less than 100 liter. To achieve this performance, the Ytterbium ions will be laser-cooled and trapped by electrodynamics fields. In order to...Go to contribution page
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Mr Arindam Kr. Sikdar (Variable Energy Cyclotron Centre)The development of Cryogenic Penning trap at VECC has reached an advanced stage and the system would soon be commissioned. In this work, we shall describe the simulation, design, and fabrication of a Cryogenic Penning trap system and study its applications. The Penning trap assembly and its associated electronics will be housed in the liquid helium filled bore of a 5-Tesla superconducting...Go to contribution page
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Mr Pradip Mondal (Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.)Vortex states in Bose-Einstein condensate (BEC) play an essential role in macroscopic quantum phenomena like superfluidity and superconductivity. There have been studies to detect and measure the angular momentum of a BEC vortex state using different techniques, like, imaging the density distribution after free expansion , interference between vortex states , and exciting the quadrupole mode...Go to contribution page
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Dr Taehyun Kim (SK telecom)One of the biggest challenges in applying the current quantum key distribution (QKD) system to large area networks is that the current commercial QKD system cannot connect remote nodes separated by long distances purely in quantum states due to the inevitable attenuation in the fibers. At SK telecom, in addition to a commercial QKD system, we are also developing a quantum repeater based on...Go to contribution page
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S. Patra (LaserLaB and Department of Physics and Astronomy, VU University, Amsterdam)High-precision spectroscopy using resonance-enhanced multi-photon dissociation (REMPD) of the (v,L): (0,2) – (8,3) overtone of trapped, laser-cooled HD$^+$ molecular ions has been demonstrated with an unprecedented resolution of 0.8 ppb [1]. The resolution achieved is largely limited by Doppler broadening. To overcome this we are now implementing Doppler-free two-photon spectroscopy for HD$^+$...Go to contribution page
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Mr Joschka Wolf (Institut für Quantenmaterie, Universität Ulm)We investigate the interaction of a laser-cooled trapped ion ($^{138}$Ba$^+$, $^{87}$Rb$^+$ or $^{87}$Rb$_2^+$) with an ultra-cold cloud of optically confined $^{87}$Rb atoms. The ion is held in a linear Paul trap and is immersed in the center of the cold atomic cloud. By controlling a set of parameters, like changing the micromotion energy, we can manipulate the atom-ion collisions and...Go to contribution page
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Mr Manu Bajpai (Institute for Plasma research, Gandhinagar, India)**Estimation of RF heating and cooling rates of an electron-positron plasma confined in a Combined Trap** Manu Bajpai *Institute for Plasma Research, Near Indira Bridge, Gandhinagar - 382 428, INDIA* **Abstract** The cross-sections have been estimated for heating of confined electrons and positrons due to two type of RF driven collisions, (a) elastic collisions between...Go to contribution page
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Mr Zievi Ursin Solèr (ETH Zurich)Ion trap quantum control is among the most advanced in quantum science. This finds application in pioneering work on quantum information processing and quantum simulation. One of the major challenges at present is to scale these systems up, which requires the ability to "wire up" a larger system of traps by moving quantum information around. In our newly-realised cryogenic ion trap...Go to contribution page
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Vera Schäfer (urn:Google)In order for quantum computation to become useful for practical purposes, it is necessary to be able to perform two-qubit entangling gates with fidelities high enough that quantum error correction can be applied. Therefore we have performed a careful analysis of the error sources of our system and by identifying the leading error sources we have decreased our two-qubit gate errors by nearly an...Go to contribution page
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Stefan Knauer (Ernst Moritz Arndt Universität Greifswald)A multipole ring-electrode trap was built for systematic studies of cluster anions. The Coulomb barrier and electron binding energies of multiply-charged metal clusters are experimentally hardly investigated. Because poly anionic metal-clusters do not exist in nature, they have to be produced in laboratories by cluster electron collision. This can be achieved by combinations of cluster sources...Go to contribution page
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Ms Sarah Woodrow (University of Oxford)In the Ion Trap Quantum Computing group at Oxford we are working towards demonstrating the building blocks of a scalable quantum computer. Using hyperfine states of $^{43}\text{Ca}$ ions confined in a linear Paul trap we have demonstrated state preparation, state readout, single qubit operations, and two-qubit entangling gates, all below the fault-tolerant error threshold. An important...Go to contribution page
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Alvaro Oliveira (Univ. Federal do Rio de Janeiro (BR)), Rodrigo Lage Sacramento (Univ. Federal do Rio de Janeiro (BR))We present the Matrix Isolation Sublimation (MISu) technique for generating cryogenic beams of atoms and molecules for high precision spectroscopy. We have produced beams of Cr, Li, H and Li$_2$. We have measured temperatures from $16$ K all the way down to $1$ K, depending on the sublimation regime. The cold beams will be used for high-precision laser spectroscopy and for loading magnetic...Go to contribution page
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Ms Amélia Leite (SPP/Irfu, CEA)The antiprotons will be provided by the ELENA facility at the Antiproton Decelerator, at CERN. They will then be slowed down to 1-10 keV by a decelerator device and focused on a dense positronium cloud, where reactions (1) and (2) will take place . To produce this target cloud, we will use an intense source of positronium that we are developing for the CERN GBAR (Gravitational Behaviour of...Go to contribution page
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Mr Sebastian Grondkowski (Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany)Surface-electrode traps, microwave-quantum-logic techniques, field-insensitive $^{9}$Be$^{+}$ qubit, reconfigurable rf voltages, microwave pulse-shaping, cryogenic ion trapGo to contribution page
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Mr James Tarlton (University of Oxford)Our recent work on performing near-field microwave qubit operations using $^{43}$Ca$^{+}$ ions will be reported. Using intermediate-field “atomic clock” states, we have demonstrated single-qubit preparation, gates and readout each with 99.9% fidelity or better, with operation times much less than the qubit coherence time of $T_{2}^{*} = 50$s [1]. These results were achieved in a...Go to contribution page
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Mr Lavkesh Lachhvani (Institute for Plasma Research)Stability, equilibrium and transport of electron plasmas in cylindrical traps have been comprehensively investigated owing to their exceptional confinement properties[1]. In recent times non-neutral plasmas in various toroidal configurations have also raised considerable interest ascribed to the capability of producing equal mass plasmas in such configurations[2], [3]. Investigations of...Go to contribution page
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Dinko Atanasov (Max-Planck-Institute for Nuclear Physics (DE))The four trap mass spectrometer ISOLTRAP is an experiment primarily dedicated to precision mass measurements of radioactive nuclides. It is located at ISOLDE allowing investigations of ions produced via spallation, fission or fragmentation by impinging a 1.4 GeV proton beam on hot targets. The current ISOLTRAP setup consists of a linear segmented radio-frequency cooler and buncher, a...Go to contribution page
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Myneni Niranjan (Raman Research Institute, Bangalore)We present a combined ion-atom trap which consists of a linear Paul trap and a magneto optical trap (MOT). It traps ions and atoms simultaneously with spatial overlap, and enables us to study interaction between the trapped ions and cold atoms.[1] In the experimental configuration described above, cooling of ions has been unambiguously established even for equal mass of ion and the atom due...Go to contribution page
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Jan Christoph Heip (Physikalisch-Technische Bundesanstalt)Molecular ions have a rich level structure and therefore are useful for applications ranging from precision measurements to quantum information processing. Besides the motional degrees of freedom, they exhibit also vibrational and rotational degrees of freedom, rendering direct laser cooling a challenge. We demonstrate sympathetic motional ground state cooling of a $^{24}$MgH$^+$ molecular ion...Go to contribution page
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Fabian Wolf (Physikalisch-Technische Bundesanstalt, Braunschweig, Germany)Compared to atoms, molecules offer a rich level structure, permanent dipole moment, large internal electric field and additional symmetries. Therefore, molecular quantum systems are well suited for many applications such as quantum computing, high precision spectroscopy, test of fundamental physics, as well as quantum chemistry and astrochemistry. However, in general direct laser cooling...Go to contribution page
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Ms Christine Maier (IQOQI Innsbruck)The key to explaining and controlling a range of quantum phenomena is to study how information propagates around many-body systems. Quantum dynamics can be described by particle-like carriers of information that emerge in the collective behaviour of the underlying system, so called quasiparticles. These elementary excitations are predicted to distribute quantum information in a fashion...Go to contribution page
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Dr Balint Radics (RIKEN)Poster is presented on CTMC simulation and antihydrogen level population calculation results. Ref: Phys. Rev. A 90, 032704 (2014)Go to contribution page
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Mr Rodney Orford (McGill University/Argonne National Lab)The Canadian Penning trap (CPT) is currently located at Argonne National Laboratory in the CARIBU facility where intense beams of neutron-rich nuclei are produced from the spontaneous fission of $^{252}$Cf. The focus of the current CPT campaign is to provide precision mass measurements of nuclides involved in the astrophysical r-process. To date more than 110 nuclides have been measured to an...Go to contribution page
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Mr William Cairncross (JILA, NIST and University of Colorado, and Department of Physics, University of Colorado)Trapped molecular ions have the potential to provide several significant advantages in precision measurement experiments due to the ease with which they can be trapped and the long coherence times possible in ground or metastable states. Here we demonstrate precision spectroscopy using clouds of HfF$^+$ confined in a Paul trap for stringent tests of time-reversal symmetry by measuring the...Go to contribution page
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Christa Flühmann (eduGAIN - ETHZ - ETH Zurich)In our laboratory, we focus on quantum state engineering with beryllium and calcium ions, including recent demonstrations of squeezed states and spin-motion entangled state interferometry by combining reservoir engineering with unitary operations [(Kienzler et al.)][1]. In order to improve the quality with which we control our ions, we are currently working to upgrade the system. One of the...Go to contribution page
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Peter Micke (Physikalisch-Technische Bundesanstalt)P. Micke$^{1,2}$, T. Leopold$^1$, L. Schmöger$^{1,2}$, M. Schwarz$^{1,2}$, O. O. Versolato$^{1,2}$, M. Kohnen$^{1,3}$, J. H. Ullrich$^{1,2}$, J. R. Crespo López-Urrutia$^2$, and P. O. Schmidt$^{1,3}$ $^1$ Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany, $^2$ Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany, $^3$ Leibniz Universität Hannover, 30167...Go to contribution page
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Mr Matteo Marinelli (ETH Zurich)One of the major challenges in quantum computation with trapped ions is to scale the system up to large number of ions. In our experiment, we work on the quantum CCD architecture [1], making use of a segmented trap which can load both beryllium and calcium at the same time. The trap has multiple qubit control zones in which we aim to achieve parallel sequences of operations. We have now...Go to contribution page
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Klemens Schueppert (UIBK)Klemens Schueppert$^1$, Florian Ong$^1$, Bernardo Casabone$^1$, Konstantin Friebe$^1$, Konstantin Ott$^2$, Jakob Reichel$^2$, Rainer Blatt$^{1,3}$ and Tracy Northup$^1$ $^1$ Institute of Experimental Physics, University Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria $^2$ Laboratoire Kastler Brossel, ENS / UPMC-Paris 6 / CNRS, 24 rue Lhomond, 75005 Paris, France $^3$...Go to contribution page
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Ms Teresa Feld (Institut für Quantenoptik, Leibniz Universität Hannover)CPT test, g-factor measurement, quantum logic operations, optical manipulation system, imaging systemGo to contribution page
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Richard Charles Thompson
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