Keynote: Superconducting qubits for quantum computation: transmon vs fluxonium
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- Опубліковано 8 сер 2024
- Superconducting qubits are solid state electrical circuits fabricated using techniques adapted from those of conventional integrated microprocessors. They are based on the Josephson tunnel junction, which is so far the only non-dissipative, strongly nonlinear circuit element compatible with low temperature operation. In contrast to microscopic entities such as spins, atoms, or ions, superconducting qubits can be held firmly in one location in space and coupled strongly to their neighbors, an appealing feature for 2-qubit gate array implementation. Recently, the coherence factor of bare superconducting artificial atoms has reached that of the hydrogen atom for its 1S-2P transition (~ 20 million). This opinionated review will compare the prospects of the transmon and fluxonium artificial atoms for large scale quantum information processing.
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Great talk!
What a great lecture!!!
Very very nice looking
I wish i could grasp just 1% of the lecture
Actually I couldn't understand the transition from linearity to non-linearity around 9.10 mins. Why do we need non-linearity?
I know it is because we want to avoid equally spaced energy levels. Suppose the system changes energy and emits a photon. With equally spaced levels, we couldn't be able to tell what energy the system was in just by the energy of the emitted photon, since they were all equally spaced. With unequally spaced levels, the energies between transitions will be unique, and hence the energy of photons would tell us exactly what state the system was in. That is just my best guess though, I am new to all this as well!
We need unique individual energy levels to differentiate. It's easier for representation purpose
@@christiancastruita9053yes u nailed it. U r ryt