Ulrich Poschinger
Trapped-ion-based platforms have seen a rapid technological progress, enabling groundbreaking experiments in fields such as quantum computation and quantum simulation. We present a trapped-ion platform based on shuttling ions in a segmented microchip ion trap [1]. Current developments aim at operation with up to 20 qubits, maintaining high fidelities of all required operations. The current state of the art, limitations and future prospects are discussed.
We describe ongoing work on fault-tolerant parity readout sequence for a single plaquette of a [[7,1,3]] color code for quantum error correction, where errors occurring during the readout process are captured by a single additional ‘flag’ ancilla qubit [2].
The possibility to engineer dissipative interactions enables experiments in the emerging field of quantum thermodynamics. We present results on the characterization of a heat engine based on a single spin as working agent [3]. Furthermore, we discuss ongoing work on the detection of a heat leak in a multi-qubit system.
[1] V. Kaushal et al., Shuttling-Based Trapped-Ion Quantum Information Processing, AVS Quantum Sci. 2, 014101 (2020)
[2] A. et al., Assessing the Progress of Trapped-Ion Processors Towards Fault-Tolerant Quantum Computation, Phys. Rev. X 7, 041061
[3] D. von Lindenfels et al., A spin heat engine coupled to a harmonic-oscillator flywheel, Phys. Rev. Lett. 123, 080602 (2019)