Quantum computation with cat qubits
| Autor: | Guillaud, Jérémie, Cohen, Joachim, Mirrahimi, Mazyar |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | SciPost Phys. Lect. Notes 72 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.21468/SciPostPhysLectNotes.72 |
| Popis: | These are the lecture notes from the 2019 Les Houches Summer School on "Quantum Information Machines". After a brief introduction to quantum error correction and bosonic codes, we focus on the case of cat qubits stabilized by a nonlinear multi-photon driven dissipation process. We argue that such a system can be seen as a self-correcting qubit where bit-flip errors are robustly and exponentially suppressed. Next, we provide some experimental directions to engineer such a multi-photon driven dissipation process with superconducting circuits. Finally, we analyze various logical gates that can be implemented without re-introducing bit-flip errors. This set of bias-preserving gates pave the way towards a hardware-efficient and fault-tolerant quantum processor. Comment: Submitted to SciPost Lecture Notes. To appear in 'Quantum Information Machines; Lecture Notes of the Les Houches Summer School 2019', eds. M. Devoret, B. Huard, and I. Pop" |
| Databáze: | arXiv |
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