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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">科学家用激光照射量子点成功获得成对光子 </h1> <p class="xg1"> 时间：2013-4-27 16:03<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1588)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>奥地利因斯布鲁克大学的科学家借助微型半导体结构，用激光照射量子点首次获得了成对的光子。这一成果可进一步推动量子的应用研究，并可用于量子计算机的开发。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">奥地利因斯布鲁克大学的科学家借助微型<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">半导体</a>结构，用<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>照射量子点首次获得了成对的光子。这一成果可进一步推动量子的应用研究，并可用于量子计算机的开发。<BR><BR>量子点是准零维的<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a><a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>，由少量的原子构成。单个原子很难被“固定”，而量子点比较容易“被集成到半导体芯片中”。研究人员在实验中采用了砷化铟中的量子点。这种量子点每个有约一万个原子组成，由于其特殊的结构，它们的活动与单一原子十分相似。<BR><BR>研究人员首先用液态氦对嵌入在一个微型半导体结构中的量子点进行冷却，然后用激光照射以提高<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>能量状态，最终能量便以光子形式得到释放。因斯布鲁克大学实验<a href="http://theory.oecr.com" target="_blank" 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