Optimal control can generate high-fidelity, charge-robust microwave pulses for heavy-fluxonium and 0-pi protected superconducting qubits, in simulation, by temporarily routing population through excited states.
The high-coherence fluxonium qubit
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We report superconducting fluxonium qubits with coherence times largely limited by energy relaxation and reproducibly satisfying T2 > 100 microseconds (T2 > 300 microseconds in one device). Moreover, given the state of the art values of the surface loss tangent and the 1/f flux noise amplitude, coherence can be further improved beyond 1 millisecond. Our results violate a common viewpoint that the number of Josephson junctions in a superconducting circuit -- over 100 here -- must be minimized for best qubit coherence. We outline how the unique to fluxonium combination of long coherence time and large anharmonicity can benefit both gate-based and adiabatic quantum computing.
fields
quant-ph 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Universal gates for protected superconducting qubits using optimal control
Optimal control can generate high-fidelity, charge-robust microwave pulses for heavy-fluxonium and 0-pi protected superconducting qubits, in simulation, by temporarily routing population through excited states.