Quantum error correction with molecular spin qudits (July, 10.1039/D2CP01228F, 2022)

被引：0

作者：

Chizzini, Mario ^{[1
,2
]}

Crippa, Luca ^{[1
,3
]}

Zaccardi, Luca ^{[1
,4
]}

Macaluso, Emilio ^{[1
,2
,4
]}

Carretta, Stefano ^{[1
,2
,4
]}

Chiesa, Alessandro ^{[1
,2
,4
]}

Santini, Paolo ^{[1
,2
,4
]}

机构：

[1] Univ Parma, Dipartimento Sci Matemat, Fis & Informat, I-43124 Parma, Italy

[2] INFN, Sez Milano Bicocca, Grp collegato Parma, I-43124 Parma, Italy

[3] IBM Italia spa, Circonvallaz Idroscalo, I-20090 Segrate, Italy

[4] INSTM, UdR Parma, I-43124 Parma, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2022年 / 24卷 / 34期

基金：

欧盟地平线“2020”;

关键词：

Error correction;

D O I：

10.1039/d2cp90132c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thanks to the large number of levels which can be coherently manipulated, molecular spin systems constitute a very promising platform for quantum computing. Indeed, they can embed quantum error correction within single molecular objects, thus greatly simplifying its actual realization in the short term. We consider a recent proposal, which exploits a spin qudit to encode the protected unit, and is tailored to fight pure dephasing. Here we compare the implementation of this code on different molecules, in which the qudit is provided by either an electronic or a nuclear spin (S, I > 1), coupled to a spin-1/2 electronic ancilla for error detection. By thorough numerical simulations we show that a significant gain in the effective phase memory time can be achieved. This is further enhanced by exploiting pulse-shaping techniques to reduce the leakage and/or the impact of decoherence during correction. Moreover, we simulate the implementation of single-qubit operations on the encoded states. © 2022 The Royal Society of Chemistry.

引用

页码：20565 / 20565

页数：1