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Jurek Eisinger (Johannes Gutenberg University Mainz)07/09/2026, 15:20Quantum Information & ComputingLong Talk (20min)
Trapped-ion quantum computers mature to larger qubit numbers, but their computational capability is limited by architectural and control constraints. We present a framework for quantifying and optimizing the computational capabilities of trapped-ion processors. Using compiler techniques from classical computer science, we show how arbitrary quantum circuits can be mapped to hardware-efficient...
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Qifeng Lao (Komaba Institute for Science (KIS), The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan)07/09/2026, 15:45Quantum Information & ComputingShort Talk (15min)
Large-scale trapped-ion quantum processors require highly integrated control architectures capable of supporting high-fidelity gate operations. An all-electronic control platform offers significant advantages in on-chip integration, scalability, and operational fidelity. Recently, a near-field gradient-based entangling method has demonstrated the highest two-qubit gate fidelity among all...
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Ms Ellis Ainley (University of Oxford)07/09/2026, 16:05Quantum Information & ComputingLong Talk (20min)
One approach towards a utility scale quantum computer uses smaller processors that are linked via a quantum network. In such systems, both computation and error correction must be performed across these nodes. Here, we demonstrate quantum error detection across a distributed trapped-ion network. Logical qubits are encoded in physical qubits that are spatially separated across two ion traps,...
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Isabelle Savill-Brown (The Australian National University)07/09/2026, 16:30Quantum Information & ComputingShort Talk (15min)
Conventional two-qubit gate mechanisms feature high connectivity between spatially-separated qubits, mediated by collective vibrations of ions within a single trap. However, controlling off-resonant excitation of spectator modes becomes increasingly challenging as the length of the chain increases, reducing gate speeds and fidelities. Modern architectures circumvent this challenge by...
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Iver Romvig Øvergaard (University of Oxford)09/09/2026, 15:20Quantum Information & ComputingShort Talk (15min)
Error mitigation is a key tool for improving the performance of near-term quantum devices, but its efficacy depends strongly on the structure of the underlying noise [1]. In realistic systems, errors can exhibit temporal and spatial correlations, which determine which suppression strategies are effective. Virtual distillation (VD) is a promising approach, where exponential error suppression in...
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Adrien Amour (University of Sussex)09/09/2026, 15:40Quantum Information & ComputingLong Talk (20min)
Control over the internal states of trapped ions makes them the ideal system to generate single
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and two-photon states. Coupling a single ion to an optical cavity enables efficient emission of single
photons into a single spatial mode and grants control over their temporal shape, phase and frequency.
Using the long coherence time of the ion’s internal states and employing a scheme to protect... -
Kratveer SINGH (Palacky University Olomouc)09/09/2026, 16:05Quantum Information & ComputingLong Talk (20min)
Understanding the collective interaction of light with quantum emitters is of paramount importance in quantum optics and a wide range of applications. Trapped-ion systems provide an ideal platform for studying light–matter interaction at the level of a few atomic scatterers, offering precise control over both electronic and motional degrees of freedom, and enabling access to a regime where...
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Tenzan Araki (University of Oxford)09/09/2026, 16:30Quantum Information & ComputingShort Talk (15min)
Scaling quantum devices while preserving coherence remains a central challenge for practical quantum computation. Quantum error correction (QEC) addresses this, but its implementation depends critically on hardware constraints. By the threshold theorem, errors can be suppressed arbitrarily by increasing the number of physical qubits if physical error rates fall below a code-dependent...
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Emma Vandrey (University of Oxford)10/09/2026, 09:30Quantum Information & ComputingShort Talk (15min)
Trapped ions are a promising hardware platform for quantum computing as they unite properties such as long coherence times, high gate fidelities, low state preparation and measurement errors, and networking capabilities. While running algorithms composed of long gate sequences on trapped-ion quantum computers, it is essential to cool the ions' motional modes in order to minimise errors caused...
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Ingrid H. Zimmermann (University of Colorado Boulder)10/09/2026, 09:50Quantum Information & ComputingShort Talk (15min)
Quantized motional states of trapped ions are a quantum degree of freedom that is emerging as a platform for applications such as quantum computing and quantum simulation that involve bosonic degrees of freedom. One important tool, useful for example in quantum error correction, is parity measurement. Non-destructive measurements of the parity of a motional state enable mid-circuit projections...
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Gabriel Gregory (University of Oregon)10/09/2026, 10:10Quantum Information & ComputingShort Talk (15min)
We experimentally demonstrate transitions between electronic angular momentum states with a difference in magnetic quantum numbers $\Delta m_J$ = 3, 4, and 5 via resonant four- and six-photon stimulated Raman transitions in a single trapped atom. Derivation of the corresponding Rabi frequencies, which are verified experimentally, follows the standard treatment of two-photon transitions...
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Armin Winkler (Universität Innsbruck)10/09/2026, 10:30Quantum Information & ComputingShort Talk (15min)
Quantum networks of registers of atoms have promising applications in cryptography, distributed computing, sensing, and clock synchronization. The realization of such networks requires the establishment of entanglement between atoms tens of kilometers apart. We recently performed an experiment to entangle two trapped atomic ions separated by 50 km of spooled optical fiber. Preliminary analysis...
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Prachi Nagpal (University of Sydney)10/09/2026, 14:30Quantum Information & ComputingShort Talk (15min)
Extending the computational Hilbert space, we encode qudits in the magnetically insensitive hyperfine states in the 3D1 manifold of Lutetium ions. Equipped with error-suppressing pulses through optimized dynamical modulation of optically driven couplings, this is designed to implement universal control for qudit quantum information processing. Additionally, the system can co-trap ytterbium...
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Sophie Decoppet (University of Oxford)10/09/2026, 14:50Quantum Information & ComputingShort Talk (15min)
The leading approach to increase the computational capabilities of an ion-trap quantum computer is to increase the number of ions in the device. Employing multi-level systems, however, also significantly increases the Hilbert space dimension but with less hardware overhead. In trapped ions, multi-level systems can be made, for example, by using more atomic states or by harnessing the harmonic...
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Alexander Onkes (Leibniz Universität Hannover, Physikalisch-Technische Bundesanstalt)11/09/2026, 11:15Quantum Information & ComputingShort Talk (15min)
Our group develops scalable ion-trap quantum computers based on the Charge-Coupled Quantum Device (QCCD) architecture. To realize elementary quantum gate operations on the trapped-ion qubits, we employ the microwave near-field approach [1] which uses microwave conductors embedded in the trap structure and the resulting amplitude gradients of the microwave magnetic field. This poster reports on...
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Phoebe Grosser (Universität Innsbruck)11/09/2026, 11:35Quantum Information & ComputingShort Talk (15min)
Mid-circuit measurement and readout (MCMR) are essential requirements for fault-tolerant trapped-ion quantum computers, as they enable syndrome measurement and feedback in quantum error correction protocols. Implementing these operations on auxiliary qubits in single-species trapped ion crystals remains challenging, as photon absorption due to resonance-fluorescence detection can introduce...
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Kai Shinbrough (University of Oxford)11/09/2026, 11:55Quantum Information & ComputingShort Talk (15min)
Squeezing and displacement of a bosonic mode are well-known operations with a wide range of applications in quantum information processing (QIP), from two-qubit gates [1] to precision metrology [2]. Generalized, higher-order spin-dependent squeezing interactions in hybrid spin-oscillator systems have recently come under experimental control [3,4], and represent a novel, rich, and...
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James Rumbold (Johannes Gutenberg University)11/09/2026, 12:15Quantum Information & ComputingShort Talk (15min)
To enhance the capabilities of trapped-ion quantum computers, systems possessing hundreds of qubits are required. In pursuit of this objective, our system combines single-ion addressing with the transport of ion chains in a micro-segmented Paul trap [1]. Our setup will feature two independent laser addressing zones, each capable of performing quantum gates, while shuttling facilitates...
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