Z2 quantum memory implemented on circuit quantum electrodynamics
Kyaw, T. H.
Kwek, Leong Chuan
Date of Issue2014
SPIE 9225, Quantum Communications and Quantum Imaging XII
Institute of Advanced Studies
We present a technique to store and retrieve single- and two-qubit states into a parity-protected quantum memory implemented on a state-of-the-art superconducting circuit architecture. Our proposal relies upon a specific superconducting circuit design that permits a tunable qubit-resonator coupling strength. The latter allows us to adiabatically tune from the weak coupling to the ultrastrong coupling regime of light-matter interaction, where a controllable and well-protected effective two-level system is defined due to the Z2 parity symmetry. Storage and retrieval time of the qubit are in a few nanoseconds timescale, which is far below the effective qubit coherence time.
DRNTU::Engineering::Electrical and electronic engineering::Microelectronics
© 2014 Society of Photo-optical Instrumentation Engineers. This paper was published in Proceedings of SPIE 9225, Quantum Communications and Quantum Imaging XII and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers. The paper can be found at the following official DOI: [http://dx.doi.org/10.1117/12.2062893]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.