Ultra-long Coherence Times Amongst Room-temperature Solid-state Spins

Overview

Journal Nat Commun

Specialty Biology

Date 2019 Aug 30

PMID 31462631

Citations 19

Authors

E D Herbschleb

H Kato

Y Maruyama

T Danjo

T Makino

S Yamasaki

I Ohki

K Hayashi

H Morishita

M Fujiwara

N Mizuochi

Affiliations

Soon will be listed here.

Abstract

Solid-state single spins are promising resources for quantum sensing, quantum-information processing and quantum networks, because they are compatible with scalable quantum-device engineering. However, the extension of their coherence times proves challenging. Although enrichment of the spin-zero C and Si isotopes drastically reduces spin-bath decoherence in diamond and silicon, the solid-state environment provides deleterious interactions between the electron spin and the remaining spins of its surrounding. Here we demonstrate, contrary to widespread belief, that an impurity-doped (phosphorus) n-type single-crystal diamond realises remarkably long spin-coherence times. Single electron spins show the longest inhomogeneous spin-dephasing time ([Formula: see text] ms) and Hahn-echo spin-coherence time (T ≈ 2.4 ms) ever observed in room-temperature solid-state systems, leading to the best sensitivities. The extension of coherence times in diamond semiconductor may allow for new applications in quantum technology.

Citing Articles

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