Poster (Plenary/Keynote)

FZJ-2024-07017

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Parasitic-Free Gate: An Error-Protected Cross-Resonance Switch in WeaklyTunable Architectures

Xu, X.FZJ* ; Ansari, M.FZJ*

2024

Abstract: We propose a switch between two qubits that on adjusted parameters take a pair of qubits into idle and cross-resonance (CR) modes without accumulating residual ZZ interaction in either mode. Our detailed theoretical results show that these error-free modes do not necessarily require largely tunable circuits, such as magnetic modulation of qubits or couplers. We obtain the operational gate on weakly tunable circuits as well and show that switching between them is remarkably fast.

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Contributing Institute(s):

1. Theoretische Nanoelektronik (PGI-2)

Research Program(s):

1. 5214 - Quantum State Preparation and Control (POF4-521) (POF4-521)
2. 5223 - Quantum-Computer Control Systems and Cryoelectronics (POF4-522) (POF4-522)
3. 5221 - Advanced Solid-State Qubits and Qubit Systems (POF4-522) (POF4-522)
4. Verbundprojekt: German Quantum Computer based on Superconducting Qubits (GEQCOS) - Teilvorhaben: Charakterisierung, Kontrolle und Auslese (13N15685) (13N15685)

Appears in the scientific report 2024

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