334 citations · 1.1k across the 17 of their papers we have counts for
15 papers · 1 filter
Observing Time-Dependent Energy Level Renormalisation in an Ultrastrongly Coupled Open System
Alessandra Colla, Florian Hasse, Deviprasath Palani +3
Understanding how strong coupling and memory effects influence the energy levels of open quantum systems is a complex and challenging problem. Here, we show these effects by probin…
Phase-Stable Traveling Waves Stroboscopically Matched for Super-Resolved Observation of Trapped-Ion Dynamics
Florian Hasse, Deviprasath Palani, Robin Thomm +2
In quantum technologies, it is essential to understand and exploit the interplay of light and matter. We introduce an approach, creating and maintaining the coherence of four oscil…
High-Fidelity Transport of Trapped-Ion Qubits in a Multi-Layer Array
Deviprasath Palani, Florian Hasse, Philip Kiefer +4
A variety of physical platforms are investigated for quantum control of many particles, and techniques are extended to access multiple dimensions. Here, we present our experimental…
Floquet-engineered vibrational dynamics in a two-dimensional array of trapped ions
Philip Kiefer, Frederick Hakelberg, Matthias Wittemer +4
We demonstrate Floquet engineering in a basic yet scalable 2D architecture of individually trapped and controlled ions. Local parametric modulations of detuned trapping potentials…
Particle pair creation by inflation of quantum vacuum fluctuations in an ion trap
Matthias Wittemer, Frederick Hakelberg, Philip Kiefer +5
The creation of matter and structure in our universe is currently described by an intricate interplay of quantum field theory and general relativity. Signatures of this process dur…
Interference in a Prototype of a two-dimensional Ion Trap Array Quantum Simulator
Frederick Hakelberg, Philip Kiefer, Matthias Wittemer +2
Quantum mechanics dominates various effects in modern research from miniaturizing electronics, up to potentially ruling solid-state physics, quantum chemistry and biology. To study…
Hybrid setup for stable magnetic fields enabling robust quantum control
Frederick Hakelberg, Philip Kiefer, Matthias Wittemer +2
Well controlled and highly stable magnetic fields are desired for a wide range of applications in physical research, including quantum metrology, sensing, information processing, a…
Probing Quantum Memory Effects with High Resolution
Matthias Wittemer, Govinda Clos, Heinz-Peter Breuer +2
Trapped atomic ions enable a precise quantification of the flow of information between internal and external degrees of freedom by employing a non-Markovianity measure [H.-P. Breue…
Motional-Mode Analysis of Trapped Ions
Henning Kalis, Frederick Hakelberg, Matthias Wittemer +3
We present two methods for characterization of motional-mode configurations that are generally applicable to the weak and strong-binding limit of single or multiple trapped atomic…
Freely configurable quantum simulator based on a two-dimensional array of individually trapped ions
Manuel Mielenz, Henning Kalis, Matthias Wittemer +7
A custom-built and precisely controlled quantum system may offer access to a fundamental understanding of another, less accessible system of interest. A universal quantum computer…
Time-resolved observation of thermalization in an isolated quantum system
Govinda Clos, Diego Porras, Ulrich Warring +1
We use trapped atomic ions forming a hybrid Coulomb crystal, and exploit its phonons to study an isolated quantum system composed of a single spin coupled to an engineered bosonic…
Microwave Near-Field Quantum Control of Trapped Ions
U. Warring, C. Ospelkaus, Y. Colombe +5
Microwave near-field quantum control of spin and motional degrees of freedom of 25Mg+ ions can be used to generate two-ion entanglement, as recently demonstrated in Ospelkaus et al…
Individual-Ion Addressing with Microwave Field Gradients
U. Warring, C. Ospelkaus, Y. Colombe +3
Individual-qubit addressing is a prerequisite for many instances of quantum information processing. We demonstrate this capability on trapped-ion qubits with microwave near-fields…
Reduction of anomalous heating in an in-situ-cleaned ion trap
D. A. Hite, Y. Colombe, A. C. Wilson +7
Anomalous heating of trapped atomic ions is a major obstacle to their use as quantum bits in a scalable quantum computer. The physical origin of this heating is not fully understoo…
Microwave quantum logic gates for trapped ions
C. Ospelkaus, U. Warring, Y. Colombe +4
Control over physical systems at the quantum level is a goal shared by scientists in fields as diverse as metrology, information processing, simulation and chemistry. For trapped a…