1) Bell operator measurement
Bell算子测量
2) Bell operators
Bell算子
1.
On the one hand, a special classof Bell operators is introduced and it is shown that in this case the states which maxi-mally violate the Bell s inequality are locally unitary equivalent to the GHZ states; onthe other hand, we present the proof of that in the general case, the states that maxi-mally violate the Bell s inequality for two spin-s particles must be Bell states or.
一方面,引入了一类特殊的多体Bell算子,证明了最大违背态与GHZ态局域酉等价;另一方面,证明了一般情形下,最大违背两体自旋s体系Bell不等式的量子态只有Bell态或者由Bell态通过局域酉变换得到的态。
3) Bell state measurement
Bell基测量
1.
The second is performing joint Bell state measurements on the particle that will be teleported and one parti.
实现经典量子隐形传态通常包括三个步骤:一、EPR纠缠源的制备;二、对需要传送的粒子与EPR纠缠源中的发送者拥有的粒子实施联合Bell基测量;三、对EPR纠缠源中接收者拥有的粒子实行相应的幺正变换。
4) Bell-state measurement
Bell基测量
1.
Teleportation of a three-particle W state without the Bell-state measurement;
利用非Bell基测量实现三粒子W态的隐形传送
2.
The scheme does not require direct Bell-state measurement,but contains Bell-state measurement and is insensitive to the cavity decay and thermal field.
在传送过程中包含着对原子的Bell基测量,但不需要直接进行Bell基测量,而且最终能成功实现传送的几率为1。
5) Bell-state measurement
Bell测量
6) Bell state measurement
Bell测量
1.
In order to realize the teleportation,the sender Alice needs to perform Bell state measurements on her qubit pairs and all the spatially-separated supervisors should make a Hadamard transformation and a Von Neumann measurement on their own qubit,respectively.
提出一种多人控制的三粒子GHZ纠缠态的量子隐形传送方案,为了实现传送,Alice需要对自己的三对粒子实施Bell测量并将结果通知Bob,异地的众多监控者对各自的控制位粒子实施Hadamard变换和投影测量。
补充资料:凹算子与凸算子
凹算子与凸算子
concave and convex operators
凹算子与凸算子「阴~皿d阴vex.耳阳.勿韶;.留叮.肠疽“‘.小啊j阅雌口叹甲司 半序空间中的非线性算子,类似于一个实变量的凹函数与凸函数. 一个Banach空间中的在某个锥K上是正的非线性算子A,称为凹的(concave)(更确切地,在K上u。凹的),如果 l)对任何的非零元x任K,下面的不等式成立: a(x)u。(Ax续斑x)u。,这里u。是K的某个固定的非零元,以x)与口(x)是正的纯量函数; 2)对每个使得 at(x)u。续x《月1(x)u。,al,月l>0,成立的x‘K,下面的关系成立二 A(tx))(l+,(x,t))tA(x),0
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