Scalable quantum memory in the ultrastrong coupling regime

Scientific Reports
T H KyawL-C Kwek

Abstract

Circuit quantum electrodynamics, consisting of superconducting artificial atoms coupled to on-chip resonators, represents a prime candidate to implement the scalable quantum computing architecture because of the presence of good tunability and controllability. Furthermore, recent advances have pushed the technology towards the ultrastrong coupling regime of light-matter interaction, where the qubit-resonator coupling strength reaches a considerable fraction of the resonator frequency. Here, we propose a qubit-resonator system operating in that regime, as a quantum memory device and study the storage and retrieval of quantum information in and from the Z2 parity-protected quantum memory, within experimentally feasible schemes. We are also convinced that our proposal might pave a way to realize a scalable quantum random-access memory due to its fast storage and readout performances.

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Citations

Dec 22, 2015·Scientific Reports·J ZhangLeong-Chuan Kwek
Oct 21, 2015·Scientific Reports·J S PedernalesE Solano
May 21, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Arnau Sala, M Blaauboer
Jan 11, 2020·Physical Review Letters·Connor T HannLiang Jiang
Feb 15, 2020·Physical Review Letters·Simone Felicetti, Alexandre Le Boité
Jan 5, 2019·Physical Review Letters·A DareauA Rauschenbeutel
Aug 11, 2018·Physical Review Letters·D MarkovićB Huard
Jun 25, 2017·Scientific Reports·F A Cárdenas-LópezG Romero

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