RETRACTED: Near-Deterministic Discrimination of All Bell States with Linear Optics (Retracted article. See vol. 109, pg. 079902, 2012)

被引：12

作者：

Pavicic, Mladen ^{[1
,2
,3
]}

机构：

[1] Univ Zagreb, Fac Civil Engn, Chair Phys, Zagreb 10001, Croatia

[2] Harvard Univ, Dept Phys, Inst Theoret Atom Mol & Opt Phys, Cambridge, MA 02138 USA

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 08期

基金：

美国国家科学基金会;

关键词：

QUANTUM; INTERFEROMETRY; INTERFERENCE; GENERATION; PAIRS;

D O I：

10.1103/PhysRevLett.107.080403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For a reliable implementation of quantum teleportation, a near-deterministic (close to 100%) discrimination of all four Bell states of entangled qubits is required. One can carry it out with linear optical elements only if conditional dynamics are allowed. Here we present a setup in which we repeatedly disentangle and reentangle photons in three of four states, so as to separate photons in one of them, conditioned on keeping the other two at bay. The efficiency of a realistic implementation of our setup with current technology is over 90% for an ideal source of photons on demand.

引用

页数：5

共 30 条

[1] Beating the channel capacity limit for linear photonic superdense coding [J].