Skip to content
6CCVD Research

Improving the Coherence Time of a Quantum System via a Coupling to a Short-Lived System

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2015-03-23
JournalPhysical Review Letters
AuthorsYuichiro Matsuzaki, Xiaobo Zhu, Kosuke Kakuyanagi, Hiraku Toida, Takaaki Shimo-Oka
InstitutionsNational Institute of Information and Communications Technology, National Institute of Informatics
Citations24

Abstract

Section titled ā€œAbstractā€

In this Letter, we propose a counterintuitive use of a hybrid system where the coherence time of a quantum system can be significantly improved by coupling it with a system of a shorter coherence time. Coupling a two-level system with a single nitrogen-vacancy (NV^{-}) center, a dark state of the NV^{-} center naturally forms after the hybridization. We show that this dark state becomes robust against noise due to the coupling even when the coherence time of the two-level system is much shorter than that of the NV^{-} center. Our proposal opens a new way to use a quantum hybrid system for the realization of robust quantum information processing.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 1994 - Properties and Growth of Diamond

Reads Similar to This

Circularly polarized microwaves for magnetic resonance study in the GHz range - Application to nitrogen-vacancy in diamonds Experimental simulation of hybrid quantum systems and entanglement on a quantum computer Qubit dynamics driven by dipole field in thermal noise environment