Description
Chairperson: Prof Manas Mukherjee (Centre for Quantum Technologies, NUS)
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42. Developing modular microwave trapped-ion quantum computers for operation with millions of qubits20/04/2026, 09:00
Speaker:
Prof Winfried Hensinger
University of SussexAbstract:
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Microwave technology poses a significant opportunity to scale trapped ion quantum computers to system sizes that support utility scale quantum computation within the fault-tolerant regime. I will present progress on making microwave quantum gates faster with errors much below the fault-tolerant threshold by creating... -
20/04/2026, 09:30
Speaker:
Takashi Mukaiyama
Institute of Science TokyoAbstract:
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Atoms in a coherent superposition of different momentum states enable high-precision measurements of physical quantities. Matter-wave interferometers typically exploit the entanglement between an atomic internal and motional states. The accumulated matter-wave phases along different paths are extracted from the... -
Speaker:
Prof Junki Kim
Sungkyunkwan UniversityAbstract:
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There has been significant progress in building trapped-ion quantum computers with dozens of ion qubits; however, a clear blueprint for a fully fault-tolerant, large-scale system remains elusive. In this talk, I present a Shuttling-based Distributed Quantum Computing (SDQC) architecture that combines deterministic qubit... -
Speaker:
Prof Kihwan Kim
Tsinghua UniversityAbstract:
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Quantum coherence fundamentally limits quantum computer and memory performance. While trapped atomic ions theoretically support million-year coherence based on spontaneous emission, experimental demonstrations have fallen orders of magnitude short. This gap raises whether we face fundamental physical limitations or... -
Speaker:
Nigel Lee
Centre for Quantum Technologies, NUSAbstract:
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Mechanical oscillators represented by the bosonic motional modes of trapped ions are a promising candidate to realize continuous-variable quantum information processing. However, universal control of these modes require non-linear operations, such as cubic phase gates, which are challenging to implement on... -
Speaker:
Prof Taehyun Kim
Seoul National UniversityAbstract:
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Trapped-ion systems are among the leading platforms for quantum computing because of their long coherence times, high-fidelity operations, and flexible qubit connectivity. Realizing scalable quantum processors, however, requires progress not only in qubit control but also in trap-chip fabrication, system integration,... -
Speaker:
Prof Kenji Toyoda
Osaka UniversityAbstract:
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Vibrational excitations in trapped ions, or phonons, serve as useful
resources for quantum information processing, including quantum simulation and quantum computing. Localized excitations of the vibrational motion of individual ions (local phonons) offer both large information capacity and straightforward scalability, and... -
54. Crossing the Reusable Entanglement Threshold over Telecom Fibre in Trapped- Ion Quantum Networks
Speaker:
Dr Yong Wan
University of Science and Technology of ChinaAbstract:
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Trapped-ion systems have achieved exceptional performance in local quantum control, with long coherence times and high-fidelity operations routinely demonstrated in single-node processors. Extending these capabilities to longdistance networking, however, introduces a fundamental challenge: exponential... -
Speaker:
Dr Piyaphat Phoonthong
National Institute of Metrology (Thailand)Abstract:
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In this work, we present an evaluation of excess micromotion within a linear, asymmetric segmented Paul trap developed at the National Institute of Metrology, Thailand (NIMT). To characterize the micromotion amplitude, we employ the photon correlation method, which utilizes the correlation... -
Hour-scale lifetime and non-equilibrium steady state of trapped ions in an ultracold atom-ion hybrid trap
Speaker:
Dr Sourav Dutta
Tata Institute of Fundamental Research (TIFR)Abstract:
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Hybrid atom-ion systems offer unique opportunities for ultracold chemistry, precision measurements, and quantum... -
Speaker:
Prof Moonjoo Lee
Pohang University of Science and Technology (POSTECH)Abstract:
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We begin by discussing our experimental study of nonlinear mechanical oscillations in trapped ions. Specifically, we demonstrate the tunability of the Duffing nonlinearity of the ion oscillator, allowing it to transition from the softening to the hardening regime. Furthermore, when the ion... -
Precision at the Extremes: Exploring the Standard Model with Trapped Exotic Ions
Speaker:
Prof Klaus Blaum
Max Planck InstituteAbstract:
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The four fundamental interactions and their symmetries, along with the fundamental constants and properties of elementary particles – such as masses and magnetic... -
Speaker:
Dr Cameron McGarry
University of SydneyAbstract:
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Continuous-variable–discrete-variable (CV–DV) quantum simulators offer a natural route to simulating bosonic dynamics relevant to many branches of physics and chemistry. However, programmable simulation of arbitrary dynamics is an outstanding challenge. In particular, simulating anharmonic dynamics, which is ubiquitous... -
Speaker:
Dr Cameron McGarry
University of SydneyAbstract:
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Continuous-variable–discrete-variable (CV–DV) quantum simulators offer a natural route to simulating bosonic dynamics relevant to many branches of physics and chemistry. However, programmable simulation of arbitrary dynamics is an outstanding challenge. In particular, simulating anharmonic dynamics, which is ubiquitous... -
Speaker:
Prof Manoj Joshi
IQOQI Innsbruck & Singapore University of Technology and Design (SUTD)Abstract:
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Quantum simulators and quantum computers are progressing toward solving complex problems in science. Trapped ions are one of the key platforms, offering unprecedented qubit control. At this conference, I will present recent advancements in quantum simulation using long... -
Scalable and High-Fidelity Quantum Entanglement in Trapped-Ion Systems
Taeyoung Choi
Department of Physics, Ewha Womans UniversityAchieving high-fidelity and scalable entanglement is one of the central challenges in realizing quantum error correction and building a practical quantum computer. Among various...
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Speaker:
Prof Sadiq Rangwala
Raman Research InstituteAbstract:
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We present a new ion trap experiment, with an end cap type Paul trap built for precision spectroscopy and metrology [1,2]. We will discuss the performance of this experiment and then move quickly to the observation of three dimensional trapped ion crystals of Ca+ ions. The crystals form when the ions attain their... -
Superconducting ion traps
Speaker:
Prof Atsushi Noguchi
The University of Tokyo & RIKENAbstract:
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Recent experiments in trapped-ion platforms have demonstrated two-qubit gate fidelities reaching 99.99% using RF-based quantum gates. Because gate fidelity directly determines the achievable performance and scalability of quantum computers, a central... -
Speaker:
Dr Pei Jiang Low
Centre for Quantum Technologies, NUSAbstract:
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Trapped ion quantum computing features advantages such as good gate fidelities, all-to-all qubit connectivity and the ability to operate in room temperature over other quantum computing platforms. Conventionally, trapped ion quantum computers are built in a laser lab environment, where the hardware setup... -
Validating $\bf ^{176}$Lu$\bf ^{+}$ Optical Frequency References at the $\bf{10^{-19}}$ level
K. J. Arnold,∗ M. D. K. Lee, Qin Qichen, Qi Zhao, Zhao Zhang, and N. Jayjong
Centre for Quantum Technologies, NUSM. D. Barrett
Centre for Quantum Technologies, NUS and Department of Physics, NUSThe...
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Ytterbium ion based Optical Clock: Possible way for Redefining SI Second
Speaker:
Prof Subhasis Panja
CSIR-National Physical laboratory
Academy of Scientific & Innovative ResearchAbstract:
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Present definition of time and frequency is based on a microwave transition of laser cooled Cesium atoms. The...