Bogoliubov quasiparticles in superconducting qubits
Leonid Glazman, Gianluigi Catelani
Abstract
Extending the qubit coherence times is a crucial task in building quantum information processing devices. In the three-dimensional cavity implementations of circuit QED, the coherence of superconducting qubits was improved dramatically due to cutting the losses associated with the photon emission. Next frontier in improving the coherence includes the mitigation of the adverse effects of superconducting quasiparticles. In these lectures, we review the basics of the quasiparticles dynamics, their interaction with the qubit degree of freedom, their contribution to the qubit relaxation rates, and approaches to control their effect.
Topics & Concepts
QubitCoherence (philosophical gambling strategy)QuasiparticlePhysicsSuperconducting quantum computingPhase qubitSuperconductivityQuantum mechanicsTransmonPhotonQuantum information processingQuantumFlux qubitQuantum computerCharge qubitQuantum informationCoherence timeQuantum technologyCondensed matter physicsCoherent statesQuantum electrodynamicsTask (project management)Quantum Information and CryptographyQuantum and electron transport phenomenaQuantum Computing Algorithms and Architecture