发明名称 |
GENERATION OF QUANTUM-CORRELATED AND/OR POLARIZATION-ENTANGLED PHOTON PAIRS WITH UNEQUAL WAVELENGTHS |
摘要 |
<p>The invention provides an apparatus and method for generating quantum-correlated and/or polarization-entangled photon pairs with unequal wavelengths. The photon pairs generated collinearly with respect to the pump light via a nonlinear process in a nonlinear optical medium are collected into a single mode fiber and split using a dichroic device. The wavelengths of photons constituting a pair are selected such that, first, their efficient propagation in the same single mode optical fibre, and second, their efficient splitting with high switching ratio, is possible. A detected rate ~10<SUP>5</SUP> - 10<SUP>6</SUP> pairs/s and >98% quantum interference visibility of polarization entanglement is observed. This source, given its performance, robustness and minimum alignment requirements is ideal for quantum communication schemes, in particular for entanglement-based quantum cryptography.</p> |
申请公布号 |
WO2008107852(A1) |
申请公布日期 |
2008.09.12 |
申请号 |
WO2008IB50815 |
申请日期 |
2008.03.06 |
申请人 |
QUTOOLS GMBH;TROJEK, PAVEL;WEINFURTER, DR., HARALD |
发明人 |
TROJEK, PAVEL;WEINFURTER, DR., HARALD |
分类号 |
G02F1/35;H04B10/00;H04L9/08 |
主分类号 |
G02F1/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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