<!--HTML-->The ATIQ project in Germany brings together multiple universities and industries to further develop technologies and methods needed for scalable trapped-ion quantum computers. The Leibniz Universität Hannover is one of three centers for trapped ions within the collaboration, alongside the Universität Siegen and the Johannes Gutenberg Universität Mainz. Each trapped-ion quantum computing center has a different focus in their project, and in the collaboration for Hannover's quantum computer, the focus is to develop integrated waveguides, which are needed in order to scale up the size of trap chips and consequently the number of qubits in a trapped-ion quantum computer. In parallel, the collaborations for Siegen and Mainz focus on the development of an integrated cryogenic digital-to-analog converter and the integration with a high performance computer respectively. This talk will focus on the collaboration between universities, the Physikalisch-Technische Bundesanstalt, and several companies working towards the Hannover-based quantum computer.
<!--HTML-->The ATIQ project in Germany brings together multiple universities and industries to further develop technologies and methods needed for scalable trapped-ion quantum computers. The Leibniz Universität Hannover is one of three centers for trapped ions within the collaboration, alongside the Universität Siegen and the Johannes Gutenberg Universität Mainz. Each trapped-ion quantum computing center has a different focus in their project, and in the collaboration for Hannover's quantum computer, the focus is to develop integrated waveguides, which are needed in order to scale up the size of trap chips and consequently the number of qubits in a trapped-ion quantum computer. In parallel, the collaborations for Siegen and Mainz focus on the development of an integrated cryogenic digital-to-analog converter and the integration with a high performance computer respectively. This talk will focus on the collaboration between universities, the Physikalisch-Technische Bundesanstalt, and several companies working towards the Hannover-based quantum computer.
<!--HTML-->The current status of trapped ions quantum computer development in Europe will be presented from the industry perspective, with focus on main challenges for the next few years. A brief overview of practical aspects related to scaling the number of qubits and improving the performance of quantum computers will be given. Special attention will be devoted to qubit control electronics and a related international initiative ARTIQ/Sinara, which was and continues to be inspired by CERN activities. Examples of industry-academia collaboration on quantum computing development as part of the Quantum Flagship and EuroHPC JU will be mentioned.
<!--HTML-->Trapped ions are one of the leading and furthest developed technologies in quantum computing. However, despite higher quality operations than on any other platform and the absence of variations in qubit quality, the road to fault-tolerant quantum computing remains long and steep. In this talk, I will briefly review the state of the art of the trapped-ion platform, illustrate the current attempts to scaling up to larger numbers of qubits and highlight the challenges faced in control electronics and reliable manufacturing.
In this paper we describe one of the most promising platforms for the construction of a universal quantum computer, which consists of a chain of N ions trapped in a harmonic potential, whose internal states work out as qubits, and are coupled to collective vibrational modes of the chain. From such coupling, it is possible to build interactions between different ions of the chain, that is, qubit-qubit interactions that, together with individual operations on the ions, allow building a quantum computer as first proposed by Cirac and Zoller in the 1990s [Phys. Rev. Lett. 74, 4091 (1995)]. Here we discuss from the physics involved in trapping ions in electromagnetic potentials to the Hamiltonian engineering needed to generate a universal set of logic gates, fundamental for the execution of more complex quantum algorithms. Finally, we present the current state of the art of quantum computing in trapped ion systems, highlighting recent advances made by companies and government projects that use such architecture, such as IonQ and AQTION.
Quantinuum has deployed trapped-ion quantum computers based on a quantum charge-coupled (QCCD) architecture exhibiting high-fidelity operations, mid-circuit measurements, and full connectivity with record performance. Quantinuum recently released its accelerated Roadmap outlining plans to reach thousands of physical qubits while further reducing logical qubit error rates in commercial systems by 2029 [1]. Longerterm scaling of the QCCD device architecture will be enabled by replacing bulk free-space optics with integrated photonics for improved light delivery and detection. To this end, Quantinuum is developing integrated photonics technologies at the visible and ultraviolet wavelengths required for future large-scale trapped-ion quantum computers. This poster presents recent developments in materials (waveguiding materials, transparent conductive materials), visible and ultraviolet integrated photonics components for light routing and control, and the various paths to their implementation. These developments are expected to enable scaling towards larger qubit counts while reducing the physical size of the optical control systems.
Abstract Quantum computing, which is based on the rules of quantum mechanics, has great potential in many fields for its theoretical ability to simulate any natural process based on quantum mechanics. Many types of physical implementations of quantum computers have been developed, and the method based on trapped ions is a promising one. However, there is still a lot of work that need to be done, like how to improve the fidelity and scalability of those quantum computers. Besides laser light, microwave and waveguides have also been used in some experiments.