Quantification of multidimensional entanglement stored in a crystal

被引：36

作者：

Tiranov, Alexey ^{[1
]}

Designolle, Sebastien ^{[1
]}

Cruzeiro, Emmanuel Zambrini ^{[1
]}

Lavoie, Jonathan ^{[1
,3
,4
]}

Brunner, Nicolas ^{[1
]}

Afzelius, Mikael ^{[1
]}

Huber, Marcus ^{[1
,2
]}

Gisin, Nicolas ^{[1
]}

机构：

[1] Univ Geneva, Grp Phys Appl, CH-1211 Geneva, Switzerland

[2] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-1090 Vienna, Austria

[3] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[4] Univ Oregon, Oregon Ctr Opt Mol & Quantum Sci, Eugene, OR 97403 USA

来源：

PHYSICAL REVIEW A | 2017年 / 96卷 / 04期

基金：

欧洲研究理事会; 瑞士国家科学基金会; 加拿大自然科学与工程研究理事会; 奥地利科学基金会;

关键词：

HIGH-DIMENSIONAL ENTANGLEMENT; STATES;

D O I：

10.1103/PhysRevA.96.040303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The use of multidimensional entanglement opens new perspectives for quantum information processing. However, an important challenge in practice is to certify and characterize multidimensional entanglement from measurement data that are typically limited. Here, we report the certification and quantification of two-photon multidimensional energy-time entanglement between many temporal modes, after one photon has been stored in a crystal. We develop a method for entanglement quantification which makes use of only sparse data obtained with limited resources. This allows us to efficiently certify an entanglement of formation of 1.18 ebits after performing quantum storage. The theoretical methods we develop can be readily extended to a wide range of experimental platforms, while our experimental results demonstrate the suitability of energy-time multidimensional entanglement for a quantum repeater architecture.

引用

页数：6

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