What is a Fluxonium qubit?
The superconducting fluxonium circuit is an RF-SQUID-type flux qubit that uses a large inductance built from an array of Josephson junctions or a high kinetic inductance material. This inductance suppresses charge sensitivity exponentially and flux sensitivity quadratically.
What is a photonic qubit?
a device which uses photons to interface qubits that otherwise could not interact. However, current approaches require photons indistinguishable in frequency—a major challenge for sys- tems experiencing different local environments or of different physical compositions altogether.
What’s the difference between a transmon and a XMON qubit?
In one sense, the Xmon qubit is a transmon qubit, in that they both operate in the $E_J>>E_c$ regime of the CPB Hamiltonian and take advantage of the exponentially suppressed charge noise vs. polynomial decrease in anharmonicity effect discussed in (Koch, 2007).
Why is a transmon a charge qubit in quantum mechanics?
A transmon looks far more like a classic LC circuit. It is often depicted as a Josephson junction in parallel with a very large capacitor and thus it is manipulated using microwave frequencies, not gate voltages. However, in all literature I can find it is called a special case of a charge qubit.
Who is the creator of the transmon qubit?
In quantum computing, and more specifically in superconducting quantum computing, a transmon is a type of superconducting charge qubit that was designed to have reduced sensitivity to charge noise. The transmon was developed by Robert J. Schoelkopf, Michel Devoret, Steven M.
Is the charge qubit insensitive to the ratio?
The charge qubit (top) is normally operated at the cause less energy shift, and the anharmonicity is maximal. Transmon (bottom) energy levels are insensitive to ratio, achieved by shunting the Josephson junction with an additional large capacitor. Here