Details

Autor(en) / Beteiligte

• Chen, Yu
• Neill, C
• Roushan, P
• Leung, N
• Fang, M
• Barends, R
• Kelly, J
• Campbell, B
• Chen, Z
• Chiaro, B
• Dunsworth, A
• Jeffrey, E
• Megrant, A
• Mutus, J Y
• O'Malley, P J J
• Quintana, C M
• Sank, D
• Vainsencher, A
• Wenner, J
• White, T C
• Geller, Michael R
• Cleland, A N
• Martinis, John M

Titel

Qubit Architecture with High Coherence and Fast Tunable Coupling

Ist Teil von

• Physical review letters, 2014-11, Vol.113 (22), p.220502-220502, Article 220502

Ort / Verlag

United States

Erscheinungsjahr

2014

Link zum Volltext

Quelle

American Physical Society

Beschreibungen/Notizen

• We introduce a superconducting qubit architecture that combines high-coherence qubits and tunable qubit-qubit coupling. With the ability to set the coupling to zero, we demonstrate that this architecture is protected from the frequency crowding problems that arise from fixed coupling. More importantly, the coupling can be tuned dynamically with nanosecond resolution, making this architecture a versatile platform with applications ranging from quantum logic gates to quantum simulation. We illustrate the advantages of dynamical coupling by implementing a novel adiabatic controlled-z gate, with a speed approaching that of single-qubit gates. Integrating coherence and scalable control, the introduced qubit architecture provides a promising path towards large-scale quantum computation and simulation.