Drive-induced nonlinearities of cavity modes coupled to a transmon ancilla
Yaxing Zhang, Jacob C. Curtis, Christopher S. Wang, Robert Schoelkopf, S. M. Girvin
Abstract
When microwave cavity modes and transmon qubits are coupled, the cavity modes inherit nonlinearity from the transmons. Here, the authors investigate how a driving field affects this nonlinearity, comparing analytical, numerical, and experimental results. They show that an off-resonant driving field can even be used to cancel the dominant nonlinearity, extending the time before a quantum state stored in the cavity suffers phase collapse.
Topics & Concepts
TransmonQubitNonlinear systemPhysicsField (mathematics)Microwave cavityMicrowaveResonant cavityQuantumPhase (matter)Quantum electrodynamicsQuantum mechanicsMathematicsPure mathematicsLaserQuantum Information and CryptographyMechanical and Optical ResonatorsQuantum optics and atomic interactions