Towards Realizing a Quantum Memory for a Superconducting Qubit: Storage and Retrieval of Quantum States

被引：93

作者：

Saito, Shiro ^{[1
]}

Zhu, Xiaobo ^{[1
]}

Amsuess, Robert ^{[1
,2
]}

Matsuzaki, Yuichiro ^{[1
]}

Kakuyanagi, Kosuke ^{[1
]}

Shimo-Oka, Takaaki ^{[3
]}

Mizuochi, Norikazu ^{[3
]}

Nemoto, Kae ^{[4
]}

Munro, William J. ^{[1
]}

Semba, Kouichi ^{[1
,4
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] TU Wien, Atominst, Vienna Ctr Quantum Sci & Technol, A-1020 Vienna, Austria

[3] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[4] Res Org Informat & Syst, Natl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 10期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.111.107008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have built a hybrid system composed of a superconducting flux qubit (the processor) and an ensemble of nitrogen-vacancy centers in diamond (the memory) that can be directly coupled to one another, and demonstrated how information can be transferred from the flux qubit to the memory, stored, and subsequently retrieved. We have established the coherence properties of the memory and succeeded in creating an entangled state between the processor and memory, demonstrating how the entangled state's coherence is preserved. Our results are a significant step towards using an electron spin ensemble as a quantum memory for superconducting qubits.

引用

页数：5

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