Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit

被引：138

作者：

Mouradian, Sara L. ^{[1
]}

Schroeder, Tim ^{[1
]}

Poitras, Carl B. ^{[2
]}

Li, Luozhou ^{[1
]}

Goldstein, Jordan ^{[1
]}

Chen, Edward H. ^{[1
]}

Walsh, Michael ^{[1
]}

Cardenas, Jaime ^{[2
]}

Markham, Matthew L. ^{[3
]}

Twitchen, Daniel J. ^{[3
]}

Lipson, Michal ^{[2
]}

Englund, Dirk ^{[1
]}

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA

[3] Element Six, Santa Clara, CA 95054 USA

来源：

PHYSICAL REVIEW X | 2015年 / 5卷 / 03期

基金：

美国国家科学基金会;

关键词：

SPIN COHERENCE TIME; NUCLEAR-SPIN; ONE; 2ND; DIAMOND; ENTANGLEMENT; FLUORESCENCE; INFORMATION; CENTERS; QUBITS; MASKS;

D O I：

10.1103/PhysRevX.5.031009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a photonic circuit with integrated long-lived quantum memories. Precharacterized quantum nodes-diamond microwaveguides containing single, stable, negatively charged nitrogen-vacancy centers-are deterministically integrated into low-loss silicon nitride waveguides. These quantum nodes efficiently couple into the single-mode waveguides with >1 Mcps collected into the waveguide, have narrow single-scan linewidths below 400 MHz, and exhibit long electron spin coherence times up to 120 mu s. Our system facilitates the assembly of multiple quantum nodes with preselected properties into a photonic integrated circuit with near unity yield, paving the way towards the scalable fabrication of quantum information processors.

引用

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