Spin Qubits Candidate in Transition-Metal-Ion doped Halide Double Perovskites.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41507169.
- Also identified by DOI 10.1038/s41467-025-67980-2 and PMC identifier 12796413.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Solid-state spin qubits offer a promising route toward scalable quantum technologies. Here we demonstrate that, despites of a nuclear-spin-rich host of halide double perovskites (HDPs), transition-metal centers (Cr<sup>3+</sup> and Fe<sup>3+</sup> ions) are a good candidate for spin qubits exhibiting long-lived electron spin coherence with <math xmlns="http://www.w3.org/1998/Math/MathML"> <msub><mrow><mi>T</mi></mrow> <mrow><mn>2</mn></mrow> </msub> </math> = 29.5 µs and 21.2 µs at 4 K, respectively. Notably, spin localization facilitates a well-defined electron-nuclear (e-N) spin rotation between the electron spin and the neighboring nuclear spins of <sup>35,37</sup>Cl and<sup>133</sup>Cs. The resulting e-N spin cluster is readily beneficial for a target nuclear-spin sensing. For the Cr<sup>3+</sup> spin centers, the optical transitions associated with Cr<sup>3+</sup> spin centers is spin-selective thereby paving a way for optical addressing of spins. Our findings from these spin ensemble studies establish HDPs as a new promising platform for creating solid-state spin qubits using simple and inexpensive solution-based single crystal growth methods, broadening material applications of halide perovskites.