Name: quantum state engineering of light with continuous-wave optical parametric oscillators
Uploaded: 2014-05-30T13:00:00
Description: Watch this Scientific Journal Video about Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators at JoVE.com

这项工作是由ERA-NET CHIST-ERA（&#39;量化尺度“项目），并在ERC开始授予&#39;HybridNet&#39;的支持。 F.巴博萨承认从中国北车和FAPESP，和K黄从中国基金会的全国优秀博士学位论文（PY2012004）的作者和中国国家留学基金委的支持的支持。 C.法布尔和J. Laurat是区大学研究所法兰西的成员。

1，光学参量振荡器<ol><li>建立一个4厘米长semimonolithic线性腔（改进的机械稳定性，减少腔内损耗）。输入镜直接涂布在一个面的非线性晶体。 </li><li>选择95％的输入耦合器反射的泵以532纳米和​​高反射为在1064纳米的信号光和闲频光。相反地​​，选择输出耦合器是高反射性的泵和透过率T = 10％的红外线。该OPO的自由光谱范围等于Δω= 4.3 GHz和带宽大约为60兆赫。使空腔三重共振， 即用?...

<ol>
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Lett. 97, (2006).</li><li>Wakui, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Photon+subtracted+squeezed+states+generated+with+periodically+poled+KTiOPO4.">Photon subtracted squeezed states generated with periodically poled KTiOPO4.</a> Opt. Express. 15, 3568-3574 (2007).</li><li>Kumar, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Versatile+wideband+balanced+detector+for+quantum+optical+homodyne+tomography.">Versatile wideband balanced detector for quantum optical homodyne tomography.</a> Optics Com. 285, 5259-5267 (2012).</li><li>Nielsen, A. E. 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这里提出的条件制备技术总是在初始偶资源和由前驱检测器进行测量之间的相互影响。这两种成分强烈影响所产生的状态的量子特性。 首先，将制备的状态的纯度在很大程度上依赖于初始资源中的一个，因此，一个&#39;好&#39;OPO是必需的。什么是“好”的OPO？它的量，逃生效率η接近一致的装置。参数η是由输出耦合器，T的传动比，并且该传输和腔内损耗（从散射或吸收在晶?...

工程师行驶光场量子态的能力对于量子信息科学与技术1，包括量子通信，计算和测量中央的要求。在这里，我们讨论使用作为主要资源由低于阈值操作的连续波光学参量振荡器3,4发出的光的一些特定量子态的制备和表征。具体来说，两个系统将被视为-一个II型相位匹配光参量振荡器和一个I型OPO -分别实现了可靠的新一代的预报单光子和光学相干态叠加（CSS）的形式，即状态|α &gt; - | - α&gt;。这些国家是为各种量子信息协议的实现的重要资源，从线性光学量子计算6光混合协议5,7。显著的处理P<html>这里反感允许获得真空和发射的低混合成良好控制的时空模式。 一般来说，量子态可以根据在相空间中的准概率分布称为Wigner函数W（X，P）8的形状被分类为高斯状态和非高斯状态。对于非高斯状态，维格纳函数可以取负值，非古典的强烈签名。单光子或相干态的叠加态的确非高斯状态。 一种有效的方法，用于产生这样的状态被称为条件制备工艺，其中初始高斯资源是结合了所谓的非高斯测量诸如光子计数9,10,11,12,13。这个总体方案，概率，但预示着，被描绘在图1a。 “FO：内容宽度=”5英寸“FO：SRC =”/ files/ftp_upload/51224/51224fig1highres.jpg“SRC =”/ files/ftp_upload/51224/51224fig1.jpg“/&gt; 图1（a）批准，制备技术的概念方案。 （b）由正交极化光子对（II型OPO）条件制备单光子态分离偏振分束器。（三）有条件通过从压缩真空态减去一个单光子相干态叠加的准备（I型OPO）。 通过测量一个二分纠缠态的一种模式，其他模式被投射到一个状态，这将依赖于这种测量和初始纠缠资源12,13。 什么是需要的，以产生上述的状态所需要的资源和前驱探测器？单光子态可以使用双光束来产生， 即光子数相关联的光束。单p的检测豪腾在一个模式然后预示着在其他模式9,10,14,15的单光子的产生。一个频率简并II型OPO 16,17,18,19的确是一个非常适合源出于此目的。信号和闲散的光子光子数相关，与正交极化发射。检测在一个偏振模式的单光子突出的另一个成单个光子状态， 如图1b所示 。 关于相干态的叠加态，他们可以从获得的压缩真空态20无论是脉冲单通参量下转换11,21或由I型OPO 22,23减去一个单光子产生。减法是通过攻丝的光的一小部分上的分束器和检测单个光子在这种模式下（ 图1c）上进行。压缩真空甚至光子数态的叠加，从而减去一个单光子商机以奇光子数态，因而具有较高的保真度等于和小幅度的两个相干态的线性叠加的叠加。出于这个原因，名称为“薛定谔小猫&#39;有时被赋予这种状态。 用于产生这些状态的一般方法是这样相似，但不同的一次光源。的前驱路径和检测技术过滤是什么OPO的类型所使用的相同。本系列协议的细节如何从连续波光学参量振荡器生成这两个非高斯状态以及如何将它们以高效率的特点。

<table border="0" cellpadding="0" cellspacing="0" width="623">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Pump laser</td>
			<td style="width:71px;">Innolight</td>
			<td style="width:119px;">Diabolo</td>
			<td style="width:217px;">Dual output, IR and 532 nm</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">KTP and PPKTP crystal</td>
			<td style="width:71px;">Raicol</td>
			<td style="width:119px;"></td>
			<td>Available from other vendors</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">Interferential filters</td>
			<td style="width:71px;">Barr associates</td>
			<td style="width:119px;"></td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">High efficiency photodiodes</td>
			<td style="width:71px;">Fermionics</td>
			<td style="width:119px;"></td>
			<td>Quantum efficiency above 97%</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Oscilloscope&#160;</td>
			<td style="width:71px;">Lecroy</td>
			<td style="width:119px;">Wave runner 610 Zi</td>
			<td>Used for data acquisition</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Spectrum analyser</td>
			<td style="width:71px;">Agilent</td>
			<td style="width:119px;">N9000A</td>
			<td>Available from other vendors</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Faraday rotator</td>
			<td style="width:71px;">Qioptic</td>
			<td style="width:119px;">FR-1060-5SC</td>
			<td>Available from other vendors</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">PZT</td>
			<td style="width:71px;">PI</td>
			<td style="width:119px;">P-016.00H</td>
			<td>Available from other vendors</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Superconducting single-photon detectors</td>
			<td style="width:71px;">Scontel</td>
			<td style="width:119px;">SSPD</td>
			<td>low dark counts</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Optical switch</td>
			<td style="width:71px;">Thorlabs</td>
			<td style="width:119px;">OSW12-980E</td>
			<td>Available from other vendors</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;"></td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td></td>
		</tr>
	</tbody>
</table>

quantum state engineering of light with continuous-wave optical parametric oscillators

工程电磁场的非经典态是一个中央寻求量子光学1,2。超出了他们的根本意义，这样的状态确实实现各种协议，从加强计量量子通信和计算资源。各种装置可被用来产生非经典状态，如单发射器，光与物质的界面或非线性系统3。我们在这里集中使用连续波光学参量振荡器3,4的。这个系统是基于非线性χ2晶体的光学腔内插入，并且它现在众所周知，作为非经典光，如单模或多取决于晶体双模压缩真空一种非常有效的源相位匹配。 压缩真空是一个高斯状态为正交分布遵循高斯统计。然而，已经表明，一些协议需要非高斯西安国5。直接产生这样的状态是一个艰巨的任务，需要强大的χ3非线性。另一个程序，概率但预示，组成为，通过对高斯态操作条件制备技术使用测量诱导的非线性。在这里，两个非高斯状态，单光子态和相干态的叠加，使用两个不同的相位匹配参量振荡器作为第一资源，我们的细节这一代的协议。这项技术使实现高逼真度与良好控制的时空模式的目标状态和发电状态的。

对于II型OPO和高保真单光子态的产生： 在预示着状态的断层重建示于图2，其中所显示的重建的密度矩阵和相应的Wigner函数的对角元素。没有任何损失改正的，预示着国家呈现出单光子成分高达78％。考虑到整体的检测亏损（15％），状态达到91％与单光子状态的保真度。双光子元件，其导致从多光子对产生的下变频的过程中，被限制在3％左右。 对于I型OPO和CSS...

Watch this Scientific Journal Video about Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators at JoVE.com

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

我们描述了可靠的新一代移动光学领域，包括单光子态和相干态的叠加态，使用的非经典光通过光学参量振荡器发出的操作条件制备方法的非高斯状态。 I型和II型相位匹配的振荡器被认为与通用程序，例如所需要的频率滤波或零差检波的高效率的量子状态的表征，是详细。

光与连续波光学参量振荡器的量子态工程

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Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

通过硅直接晶圆粘接制造均匀纳米级腔

Measurements of the heat capacity and superfluid fraction of confined 4He have been performed near the lambda transition using lithographically patterned ...

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

外腔半导体激光器的原子物理的构建与鉴定

Since their development in the late 1980s, cheap, reliable external cavity diode lasers (ECDLs) have replaced complex and expensive traditional dye and ...

Fabrication and Testing of Microfluidic Optomechanical Oscillators

制造和微流控光机振荡器测试

Cavity optomechanics experiments that parametrically couple the phonon modes and photon modes have been investigated in various optical systems including ...

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

硅表面润湿性的选择区域改性脉冲紫外激光照射在液体环境

The wettability of silicon (Si) is one of the important parameters in the technology of surface functionalization of this material and fabrication of ...

Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

基于扫描光散射分析器（SLPS）的方法来量化评估来自眼内镜的前向和后向光散射

The scanning light scattering profiler (SLSP) methodology has been developed for the full-angle quantitative evaluation of forward and backward light ...

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

用于材料分析的高速连续波受激布里渊散射光谱仪

Recent years have witnessed a significant increase in the use of spontaneous Brillouin spectrometers for non-contact analysis of soft matter, such as ...