消相干

消相干时间随电容C1的增大而减小。（4）得出了驱动场导致的消相干时间和量子比特本征消相干时间之间的关系。

The decoherence time decreases as the capacitance increase . ( 4 ) We found the relations between the field-dependent decoherence time and the intrinsic decoherence time .

基于EIT原子体系的量子存储及其绝热条件双模多光子纠缠态与多原子体系的消相干

Quantum Memory and the Adiabatic Condition Based on Atoms Ensemble with Electromagnetically Induced Transparency ; The Decoherence of the Double-mode Multi-photon Entangled State and the Polyatomic System

原子消相干对四能级EIT系统中非线性效应的影响

The Influence of Dephasing Rate on Nonlinearity in a Four-Level EIT System

我们介绍了如何利用无消相干子空间（DFS）制备原子纠缠态并且实现原子之间的受控非门操作。

Here the operation inside the DFS can be used to prepare atomic entangled states and implement a quantum logic gate .

此方案不受原子退相位噪声的影响，且光子的损失只影响实验的成功率，不影响保真度。（2）基于腔QED系统提出了如何在无消相干空间中实现量子密集编码。

The scheme is immune to dephasing and the loss of photon only affects the successful probability but has no influence on the fidelity . ( 2 ) We propose a scheme of how to implement quantum dense coding in decoherence-free subspace based on cavity QED system .

在量子通信过程中，基于量子Zeno效应人们主要研究的是量子态保存，纠缠态保护，纠缠制备和纯化，量子纠错以及克服消相干效应等，并提出了许多新颖的可行方案。

During quantum communication process , based on quantum Zeno effect , scientists mainly studied quantum state preservation , entangled state protection , preparation and purification of entanglement , quantum error correction as well as control of decoherence effect and so on .

压缩真空场中量子存储单元的消相干特性

Decoherence Properties of Quantum Memory Cell in Squeezed Vaccum Reservoir

如何克服系统的消相干已经成为许多科学家共同关注的目标。

How to resist decoherence has become the aim of many physicist .

量子纠缠和消相干是量子信息中最重要的两个基本概念。

Quantum entanglement and decoherence are fundamental concepts in quantum information theory .

双模多光子纠缠态与多原子体系的消相干双水相体系萃取粗状假丝酵母脂肪酶的研究

The Decoherence of the Double-mode Multi-photon Entangled State and the Polyatomic System

噪声环境中两粒子纠缠态的纠缠消相干

Entanglement decoherence of two-particle entangled states in a noisy environment

然而纠缠态在大气信道中传送的过程中，由于存在消相干，纠缠度会降低。

However , the degree of entanglement will decrease in atmospheric channel .

量子纠错码是迄今为止克服量子消相干最佳的有效方法之一。

Quantum error-correcting code is one of good methods to get over decoherence .

基于无消相干子空间的量子避错码设计

Quantum error avoiding code based on the decoherence-free subspace

热辐射场中两能级原子的消相干

Decoherence of Two-level Atoms in Thermal Radiation Field

在量子系统中，信道噪声主要源于消相干效应和量子门的不精确性。

In quantum system , noise primary results from decoherence and imperfect quantum gates .

无消相干子空间的几何量子计算方案

Geometric Quantum Computation in a Decoherence-Free Subspace

我们发现电路元件之间的互感耦合效应对消相干的影响效果是很复杂的。

The influence on decoherence of the mutual inductance coupling between the circuit components is complicated .

结果表明，即使在考虑消相干的情况下此方案也能以较高的保真度实现。

It is found that the gate can be implemented with high fidelity even when these decoherence processes are considered .

并且研究原子自发辐射和腔与光纤的光子泄漏等消相干过程带来的影响。

The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity is also investigated .

在量子信息理论中，量子消相干泛指一切使得系统的末态偏离理想态的过程。

In quantum information theory , quantum decoherence means the process in which quantum states depart from the ideal states .

量子消相干是用来解释量子理论中最基本的量子&经典跃迁问题，同时也是实现量子信息处理的主要困难。

Quantum decoherence is introduced in the quantum measurement theory to give an explanation for the fundamental quantum-classical transition problem .

为了克服量子消相干，人们提出了各种用多体量子纠缠态来编码信息的方案。

To suppress the decoherence effects , people has proposed many quantum codes to encode quantum information into multipartite entangled states .

如果仅考虑振幅阻尼，结果表明热辐射与量子噪声对量子位的消相干产生影响。

The results show the thermal radiation and quantum noise can influence the qubits'decoherence when amplitude damping be included in the consideration .

当外加驱动场的演化规律满足一定的条件时，可使两能级原子的消相干被消除。

The two level atom ′ s decoherence is suppressed when the time evolution properties of an external driving field satisfy certain conditions .

在量子计算和量子通信中，由于存在量子错误和量子消相干，量子信息在量子信道传输过程中会发生改变。

Because there exist quantum errors and quantum decoherences , the quantum information will be changed as the information transmitting through a quantum channel .

在整个克隆的过程中，腔场只是处于虚激发状态，因而大大延长了有效的消相干时间。

In the whole cloning process , cavity field is just in virtual inspire state , which can greatly extend the efficient decoherent time .

当外加驱动场消除消相干时，得到驱动场所必须满足的约束方程。

The restriction equation that must be satisfied by the external controllable driving field when the decoherence is to be eliminated is also derived .

在这个方案中，光子是中性粒子，因此和其他粒子相比，它与环境有较长的消相干时间。

In this scheme , the photon is neutral particles , therefore , compared with other particles it has longer decoherence time with its surroundings .

我们的结果对有效的量子自旋信道提出了新的要求，并且有助于更清楚地认识和抑制多体量子系统的消相干效应。

Our results put forward new constraints on the quantum spin channels , and will help to understand and suppress the decoherence of many-body systems . 3 .