6533b820fe1ef96bd1279a05
RESEARCH PRODUCT
Accelerated stabilization of coherent photon states
Mikko MöttönenJoni Ikonensubject
PhotonDephasingGeneral Physics and Astronomy02 engineering and technologycoherent statescircuit quantum electrodynamics7. Clean energy01 natural sciencesResonatorphoton statesCircuit quantum electrodynamics0103 physical scienceskvanttifysiikka010306 general physicsQuantum computerPhysicsfotonitbusiness.industryResonator mode021001 nanoscience & nanotechnologyquantum information processingtunable electromagnetic environmentsQubitOptoelectronicsCoherent statesquantum state preparationdissipative quantum systems0210 nano-technologybusinessquantum controldescription
| openaire: EC/H2020/681311/EU//QUESS Control and utilization of coherent states of microwave photons is a ubiquitous requirement for the present and near-future implementations of solid-state quantum computers. The rate at which the photon state responds to external driving is limited by the relaxation rate of the storage resonator, which poses a trade-off between fast control and long storage time. Here, we present a control scheme that is designed to drive an unknown photon state to a desired coherent state much faster than the resonator decay rate. Our method utilizes a tunable environment which acts on an ancillary qubit coupled to the resonator. By periodically resetting the qubit and tuning it into resonance with the resonator, possible photon loss and dephasing of the resonator mode are corrected without measurements or active feedback. In general, our method is suitable for accelerating the control of coherent states in high-fidelity resonators. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-10-31 |