Quantum processing with ensembles of rare-earth ions in a stoichiometric crystal

被引：20

作者：

Ahlefeldt, R. L. ^{[1
]}

Pearce, M. J. ^{[1
]}

Hush, M. R. ^{[2
]}

Sellars, M. J. ^{[1
]}

机构：

[1] Australian Natl Univ, Ctr Quantum Computat & Commun Technol, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

[2] Univ New South Wales, Australian Def Force Acad, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

NUCLEAR-SPIN QUBITS; MAGNETIC-INTERACTIONS; ENTANGLEMENT; STORAGE; MEMORY; PURIFICATION; EU3+-YALO3;

D O I：

10.1103/PhysRevA.101.012309

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a method for creating small quantum processors in a crystal stoichiometric in an optically active rare-earth ion. The crystal is doped with another rare earth, creating an ensemble of identical clusters of surrounding ions, whose optical and hyperfine frequencies are uniquely determined by their spatial position in the cluster. Ensembles of ions in each unique position around the dopant serve as qubits, with strong local interactions between ions in different qubits. These ensemble qubits can each be used as a quantum memory for light, and we show how the interactions between qubits can be used to perform linear operations on the stored photonic state. We also describe how these ensemble qubits can be used to enact, and study, error correction.

引用

页数：11

共 61 条

[11] Ensemble quantum computing by NMR spectroscopy [J].