Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session W50: Quantum in Industry: Quantum Information HardwareIndustrial Invited
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Sponsoring Units: FIAP Chair: Shavindra Premaratne, Intel Corporation Room: Room 320 |
Thursday, March 9, 2023 3:00PM - 3:36PM |
W50.00001: High-level control of spin qubits on an array with 12 quantum dots Invited Speaker: Florian Luthi Quantum computing promises to tackle exciting and computationally challenging problems. Intel is leveraging 50 years of semiconductor manufacturing experience to develop silicon-based spin qubit devices. Quantum chips are produced on the same advanced 300 mm semiconductor processing line as Intel’s next generation of computing technology. Owing to great process control and reliability, thousands of quantum devices are produced every week. With newly developed low-temperature wafer-scale characterization and measurement tools, statistically significant fabrication feedback is generated. This feedback enabled the development of high-quality 12-quantum dot samples that can be brought into the 1/1/…./1 electron occupation. After subjecting these electrons to a magnetic field, their degeneracy-lifted spin states are used as the qubit states. Single- and two-qubit gates are performed by electrically driving the spin resonance and voltage-pulsing the electrostatic barrier between qubits, respectively. Pauli spin blockade facilitates fast and high-fidelity readout of qubits. Control of the quantum chip is orchestrated with in-house built software and control electronics and is set up in a way that allows incorporation with the full algorithmic stack. |
Thursday, March 9, 2023 3:36PM - 4:12PM |
W50.00002: Quantum in the Future Computing Environment Invited Speaker: Markus Brink Quantum Computing has made tremendous progress in recent years, including the quality and quantity of qubits in a quantum processor. To solve large scale problems on a quantum computer and realize its full potential, quantum error correction (QEC) will likely be needed. Unfortunately, QEC requires significant overhead of several orders of magnitude, which won't be available near term. Taking a more scalable path to implement high fidelity quantum circuits and achieve quantum advantage, where a scientifically or business-relevant task can be computed more efficiently, cost effectively, or accurately on a quantum computer, less quantum resource intense approaches can be utilized, such as error mitigation and circuit knitting techniques. While further quantum hardware improvements always help, quantum and classical processors need to be seamlessly integrated in the software stack to exploit these techniques. We call the resulting system a quantum-centric supercomputer, which I will discuss in this talk. |
Thursday, March 9, 2023 4:12PM - 4:48PM |
W50.00003: Topological Quantum Computation with Majorana zero-energy modes Invited Speaker: Roman M Lutchyn Research in quantum computing has offered many new physical insights and a potential to exponentially increase the computational power that can be harnessed to solve important problems in science and technology. The largest fundamental barrier to building a scalable quantum computer is errors caused by decoherence. Topological quantum computing overcomes this barrier by exploiting topological materials which, by their nature, limit errors. In this talk, I will discuss how to engineer topological superconductors supporting Majorana zero-energy modes at the interface of a conventional superconductor (Aluminum) and a semiconductor with spin-orbit interaction (Indium Arsenide). I will present recent results by the Microsoft Quantum team consistent with the emergence of topological superconductivity in proximitized semiconductor nanowires. Finally, I will discuss a proposal for scalable quantum computing involving topological qubits which comprise of superconducting islands in a Coulomb blockade regime hosting aggregates of four or more Majorana zero modes. |
Thursday, March 9, 2023 4:48PM - 5:24PM |
W50.00004: Quantum computing with silicon photonics Invited Speaker: Matthew House PsiQuantum's goal is to build the world's first useful quantum computer using an integrated silicon photonics platform. Photonic qubits are highly coherent, have high fidelity single-qubit operations, can be entangled probabilistically by fusion measurements, and connected over long distances by standard optical fiber. The circuits that create, manipulate, entangle, and measure them can be manufactured in a commercial semiconductor foundry. With this platform we leverage the manufacturing scale, precision, and quality control that has been developed by the industry over decades of research and development. We will discuss PsiQuantum's unique approach to developing hardware that enables fault-tolerant quantum computing. |
Thursday, March 9, 2023 5:24PM - 6:00PM |
W50.00005: Dancing with Ions: Inside the Quantinuum Quantum Computer Invited Speaker: Caroline M Figgatt Quantum computers based on trapped ion qubits are a promising platform for high-performing systems. Quantinuum has progressed this emerging technology by developing quantum computers based on the quantum charge-coupled device (QCCD) architecture. I will discuss details of Quantinuum's next generation of trapped ion hardware, including our QCCD architecture implementation, our native operation set, and the ion transport dance that brings our qubits together to perform gates. Additionally, I will go into some scaling challenges faced by our next generation systems, as well as our long-term outlook to ameliorate them. |
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