振幅阻尼信道下两量子比特的联合Kraus算子表示(英文)

Quantum Kraus operators of two qubits for amplitude damping

振幅阻尼噪声存在于大量具有能量损失的真实量子比特系统中。利用两原子和单模腔共振相互作用的普遍模型,推导出振幅阻尼信道下两量子比特系统的联合Kraus算子表示。这为解决与量子信息处理相关的具体过程提供了有效方法,例如两量子比特纠缠分发和量子纠错。由于其普适性和计算的简便性,该方法还有助于解决很多实际的物理问题。

Amplitude damping noise exists in many practical qubit systems with the loss of energy. The presentation of quantum Krans operators of two-qubit system in amplitude damping channel was derived by using a common model in which two atoms are interacting with a single mode cavity resonantly. It provides a method by which concrete progress can be made on problems related to quantum information processing, such as bi-particle entanglement distribution and quantum error correction. Owning to its generality and convenience, this means is helpful to deal with real physical problems.