Accelerated stabilization of coherent photon states

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • University of Jyväskylä

Abstract

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.

Details

Original languageEnglish
Article number103047
Number of pages9
JournalNew Journal of Physics
Volume20
Issue number10
Publication statusPublished - 31 Oct 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • quantum control, tunable electromagnetic environments, quantum state preparation, dissipative quantum systems, circuit quantum electrodynamics

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