Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session S02: Going Beyond the Qubit
10:30 AM–12:30 PM,
Thursday, June 2, 2022
Room: Grand Ballroom A
Chair: Andrew Jayich, UCSB
Abstract: S02.00003 : Quantum Simulation and Quantum Computation with Strings of Trapped Ca+ Ions
11:30 AM–12:00 PM
Presenter:
Christian Marciniak
(Univ of Innsbruck)
Author:
Christian Marciniak
(Univ of Innsbruck)
The state-of-the-art of the Innsbruck trapped-ion quantum computer is briefly reviewed. We present an overview on the available quantum toolbox and discuss the scalability of the approach. With 20-50 fully controlled ion qubits we perform quantum simulations investigating quantum transport [1] and emerging hydrodynamics features [2]. Employing the quantum toolbox for entanglement-enhanced Ramsey interferometry, we find optimal parameters for quantum metrology [3]. Quantum computers can be protected from noise by encoding the logical quantum information redundantly into multiple qubits using error-correcting codes. Manipulating logical quantum states by imperfect operations requires that all operations on the quantum register obey a fault-tolerant circuit design to avoid spreading uncontrolled errors. We demonstrate a fault-tolerant universal set of gates on two logical qubits in the trapped-ion quantum computer [4].
[1] C. Maier et al., Phys. Rev. Lett. 122, 050501 (2019)
[2] M. K. Joshi et al., arXiv:2107.00033 (2021)
[3] C. D. Marciniak et al., arXiv:2107.01860 (2021)
[4] L. Postler et al., arXiv:2111.12654 (2021)
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