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Max Bergerhoff (Saarland University)07/09/2026, 13:50Quantum TechnologiesLong Talk (20min)
The quantum repeater (QR) [1] is a fundamental building block for the realization of large, long-distance quantum networks. By dividing a transmission link into segments of entangled quantum memories and cells generating asynchronously entangled photons [2], it is possible to overcome the exponential loss of direct transmission.
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We report on the implementation of a quantum repeater cell with... -
Sophie Najwa Al-Zaki (Leibniz Universität Hannover)07/09/2026, 14:15Quantum TechnologiesLong Talk (20min)
Surface electrode ion traps are a promising platform for building quantum computers. In our cryogenic experiments, we encode qubit states in a first-order magnetic field insensitive hyperfine transition. The qubit control is implemented with microwave conductors that are integrated into the chip, following the microwave near-field approach, which reduces the number of lasers required.
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Christian Flasch (Infineon Technologies Austria AG, Villach, Austria; Physikalisch-Technische Bundesanstalt, Braunschweig, Germany)07/09/2026, 14:40Quantum TechnologiesShort Talk (15min)
For applications of ion traps in quantum computing and metrology, understanding the origins of anomalous heating and dc stray fields is highly relevant. Anomalous heating and stray fields can both be linked to effects occurring on the ion trap surface e.g., adsorbate movement, fluctuating dipoles, two level fluctuators for anomalous heating and laser-induced charging, surface contaminations...
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Peter Drmota (University of Oxford)08/09/2026, 15:20Quantum TechnologiesLong Talk (20min)
Solving the electrostatic problems governing the potentials in ion traps is typically performed using numerical finite element methods. However, these simulations are slow due to the large number of mesh points needed to accurately approximate the potential. It has been recognised that translationally invariant [1] and axisymmetric [2] geometries can be solved analytically using the conformal...
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Vinay Shankar (Stockholm University)08/09/2026, 15:45Quantum TechnologiesLong Talk (20min)
Trapped Rydberg ions are a unique platform for quantum information processing, metrology and simulations [1,2] as they combine the exceptional control over trapped ions with the tunable, long-range interactions of Rydberg states. Rydberg ions have been used to demonstrate sub-microsecond entangling gates [3] but one of the biggest challenges while working with Rydberg ions is double ionisation...
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Max Koppelstätter (University of Innsbruck)08/09/2026, 16:10Quantum TechnologiesShort Talk (15min)
The QCosmo team studies quantum states and dynamics in trapped polyatomic molecular ions with quantum logic spectroscopy (QLS). This method maps molecular transitions to a co-trapped atomic logic ion via a shared motional mode, enabling robust and efficient state readout. We focus on novel spectroscopy techniques, rovibronic state preparation and control, and the possibilities and limitations...
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SAVELII DUDOLADOV (Okinawa Institute of Science and Technology)08/09/2026, 16:30Quantum TechnologiesLong Talk (20min)
Scalability remains one of the central challenges to achieve fault-tolerant quantum computation in trapped-ion systems. A modular approach, where multiple ion trap modules are interconnected using optical photons [1] is a promising route to tackle this endeavor. In this context, efficient coupling of ions to well-defined optical modes is essential for achieving the remote-entanglement rates...
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Sam Bishop (MIT)10/09/2026, 11:15Quantum TechnologiesLong Talk (20min)
Large-scale quantum processors will likely require modular architectures, and photon-mediated entanglement is a promising route to achieving high-fidelity interconnection using trapped ions. Current implementations rely on bulk photon-collection and interference optics, where mode-matching constraints and system-to-system variability impede scalability and limit the rates at which entangled...
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Catherine Challoner (University of Oxford)10/09/2026, 11:40Quantum TechnologiesLong Talk (20min)
To achieve high rates of entanglement generation in trapped ion quantum networks [1], the Purcell enhancement offered by optical cavities can be used to reach near-unit photon collection efficiency [2]. In this work, we address the challenges of fabricating and characterizing microcavity mirrors with ultralow, Å-level roughness, necessary to achieve high cooperativity in ion-cavity systems. We...
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Shuma Oya (Okinawa Institute of Science and Technology)10/09/2026, 12:05Quantum TechnologiesLong Talk (20min)
Distributed quantum computing with trapped ions is expected to rely on modular architectures in which many small ion registers are connected by photonic links [1]. In such a network, efficient ion–cavity coupling is crucial because it increases photon collection into a well-defined cavity mode and fiber channel, thereby boosting the remote-entanglement rate between modules. Short fiber...
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Christian Haen (Universität des Saarlandes)10/09/2026, 15:30Quantum TechnologiesLong Talk (20min)
Large-scale quantum networks provide the basis for many potential quantum communication applications, such as quantum key distribution (QKD) and distributed quantum computing. Due to the widespread availability of telecom fibers used in classical communication, these could serve to implement such networks over potentially several hundred kilometers by encoding and sending quantum information...
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Ryosuke Nishimoto (University of Osaka)10/09/2026, 15:55Quantum TechnologiesLong Talk (20min)
Our group has demonstrated the trapping of parallel chains of ${}^{40}\mathrm{Ca}^+$ ions using a planar-electrode ion trap. By applying two radio-frequency (RF) voltages, a double-well potential is generated, and the distance between ion chains can be controlled by adjusting the ratio of these RF voltages. Ideally, the trapping potential is perfectly harmonic for a one-dimensional ion chain....
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Salvi Mohandas (Johannes Gutenberg-Universität Mainz,Germany)10/09/2026, 16:20Quantum TechnologiesShort Talk (15min)
Quantum computing with X- junction for 2D navigation of trapped ion qubits
*> S. Mohandas, A. Conta, J. Müller, U. G. Poschinger, and F. Schmidt-
Kaler*
QUANTUM, Institute of Physics, 55128 Mainz, Germany
Trapped-ion quantum processors are currently transitioning from proof-of-concept laboratory...
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Caleb Burhan (University of Sussex)10/09/2026, 16:40Quantum TechnologiesShort Talk (15min)
Static magnetic field gradients can be used to couple the spin and motional states of trapped-ions, allowing for two-qubit gates using long-wavelength radiation. The use of permanent magnets to create such gradients give rise to much better noise specifications than the use of current carrying wires (CCWs), enabling much higher entanglement fidelities while reducing the required power...
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