389 citations · 1.2k across the 17 of their papers we have counts for
17 papers
A monolithic segmented 3D ion trap fabricated from fused silica by selective laser-induced etching
Edgar Brucke, Martin Wagener, Moritz Fontboté-Schmidt +10
We present the design, fabrication, and characterization of a monolithic, segmented, three-dimensional linear Paul ion trap for quantum science applications. The trap is fabricated…
State-dependent Gaussian gate set using an optical tweezer for trapped ions
Philip Leindecker, Luka Milanovic, Tanja Behrle +5
We demonstrate a state-dependent Gaussian gate set on the motional modes of trapped Ca ions, realized with an optical tweezer. Dynamic control of the tweezer intensity a…
Long-term laser frequency stabilization with an FPGA-controlled scanning cavity
R. Forti, R. Panza, A. Muzi Falconi +5
We present an FPGA-based implementation of a scanning transfer cavity lock (STCL) for laser frequency stabilization, allowing for the simultaneous stabilization of multiple laser s…
Direct observation of the optical Magnus effect with a trapped ion
Philip Leindecker, Louis P. H. Gallagher, Edgar Brucke +7
We directly observe and spatially map an optical analog of the Magnus effect, where intrinsic spin-orbit-like coupling of light generates a spin-dependent transverse displacement o…
Low-excitation transport and separation of high-mass-ratio mixed-species ion chains
Francesco Lancellotti, Stephan Welte, Matteo Simoni +6
We demonstrate low-excitation transport and separation of two-ion crystals consisting of one beryllium and one calcium ion, with a high mass ratio of . The full separation inv…
A phonon laser in the quantum regime
T. Behrle, T. L. Nguyen, F. Reiter +7
We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species co-trapped in a Paul trap. By controlling coherent spin-os…
Encoding a qubit in a trapped-ion mechanical oscillator
Christa Flühmann, Thanh Long Nguyen, Matteo Marinelli +3
The stable operation of quantum computers will rely on error-correction, in which single quantum bits of information are stored redundantly in the Hilbert space of a larger system.…
Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register
Vlad Negnevitsky, Matteo Marinelli, Karan Mehta +3
Quantum error correction will be essential for realizing the full potential of large-scale quantum information processing devices. Fundamental to its experimental realization is th…
Sequential modular position and momentum measurements of a trapped ion mechanical oscillator
C. Flühmann, V. Negnevitsky, M. Marinelli +1
The non-commutativity of position and momentum observables is a hallmark feature of quantum physics. However this incompatibility does not extend to observables which are periodic…
Quantum harmonic oscillator state control in a squeezed Fock basis
D. Kienzler, H. -Y. Lo, V. Negnevitsky +3
We demonstrate control of a trapped-ion quantum harmonic oscillator in a squeezed Fock state basis, using engineered Hamiltonians analogous to the Jaynes-Cummings and anti-Jaynes-C…
Cooling atomic ions with visible and infra-red light
F. Lindenfelser, M. Marinelli, V. Negnevitsky +2
We demonstrate the ability to load, cool and detect singly-charged calcium ions in a surface electrode trap using only visible and infrared lasers for the trapped-ion control. As o…
Observation of quantum interference between separated mechanical oscillator wavepackets
D. Kienzler, C. Flühmann, V. Negnevitsky +4
The ability of matter to be superposed at two different locations while being intrinsically connected by a quantum phase is among the most counterintuitive predictions of quantum p…
Time-dependent Hamiltonian estimation for Doppler velocimetry of trapped ions
L. E. de Clercq, R. Oswald, C. Flühmann +7
The time evolution of a closed quantum system is connected to its Hamiltonian through Schroedinger's equation. The ability to estimate the Hamiltonian is critical to our understand…
Fast quantum control and light-matter interactions at the 10,000 quanta level
J. Alonso, F. M. Leupold, Z. U. Soler +5
Fast control of quantum systems is essential in order to make use of quantum properties before they are degraded by decoherence. This is important for quantum-enhanced information…
Parallel transport quantum logic gates with trapped ions
Ludwig E. de Clercq, Hsiang-Yu Lo, Matteo Marinelli +6
We demonstrate single-qubit operations by transporting a beryllium ion with a controlled velocity through a stationary laser beam. We use these to perform coherent sequences of qua…
Spin-motion entanglement and state diagnosis with squeezed oscillator wavepackets
Hsiang-Yu Lo, Daniel Kienzler, Ludwig de Clercq +4
Mesoscopic superpositions of distinguishable coherent states provide an analog to the Schrödinger's cat thought experiment. For mechanical oscillators these have primarily been rea…
Quantum harmonic oscillator state synthesis by reservoir engineering
D. Kienzler, H. -Y. Lo, B. Keitch +6
The robust generation of quantum states in the presence of decoherence is a primary challenge for explorations of quantum mechanics at larger scales. Using the mechanical motion of…