Demonstration of Unconditional One-Way Quantum Computations for Continuous Variables

被引：117

作者：

Ukai, Ryuji ^{[1
]}

Iwata, Noriaki ^{[1
]}

Shimokawa, Yuji ^{[1
]}

Armstrong, Seiji C. ^{[1
,2
]}

Politi, Alberto ^{[1
,3
,4
]}

Yoshikawa, Jun-ichi ^{[1
]}

van Loock, Peter ^{[5
]}

Furusawa, Akira ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

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

[3] Univ Bristol, Ctr Quantum Photon, HH Wills Phys Lab, Bristol BS8 1UB, Avon, England

[4] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England

[5] Univ Erlangen Nurnberg, Opt Quantum Informat Theory Grp, Max Planck Inst Sci Light, Inst Theoret Phys 1, D-91058 Erlangen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 24期

关键词：

TELEPORTATION;

D O I：

10.1103/PhysRevLett.106.240504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

One-way quantum computation is a very promising candidate to fulfill the capabilities of quantum information processing. Here we demonstrate an important set of unitary operations for continuous variables using a linear cluster state of four entangled optical modes. These operations are performed in a fully measurement-controlled and completely unconditional fashion. We implement three different levels of squeezing operations and a Fourier transformation, all of which are accessible by selecting the correct quadrature measurement angles of the homodyne detections. Though not sufficient, these linear transformations are necessary for universal quantum computation.

引用

页数：4

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