Demonstration of a simple entangling optical gate and its use in Bell-state analysis

被引：215

作者：

Langford, NK ^{[1
]}

Weinhold, TJ

Prevedel, R

Resch, KJ

Gilchrist, A

O'Brien, JL

Pryde, GJ

White, AG

机构：

[1] Univ Queensland, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Dept Phys, Brisbane, Qld 4072, Australia

[3] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.95.210504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a new architecture for an optical entangling gate that is significantly simpler than previous realizations, using partially polarizing beam splitters so that only a single optical mode-matching condition is required. We demonstrate operation of a controlled-z gate in both continuous-wave and pulsed regimes of operation, fully characterizing it in each case using quantum process tomography. We also demonstrate a fully resolving, nondeterministic optical Bell-state analyzer based on this controlled-z gate. This new architecture is ideally suited to guided optics implementations of optical gates.

引用

页数：4

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