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QPanda3
0.1.0
Supported by OriginQ
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QPanda3
0.1.0
Supported by OriginQ
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In the field of quantum information and quantum computing, quantum channels are mathematical representations of the transformations that a quantum system can undergo. They are crucial for describing the evolution of quantum states, the transmission of quantum information, and various quantum operations. In the current version, QPanda3 realizes five quantum channel representations—Kraus, Choi, SuperOp, Chi, and PTM—through five classes.
The Kraus representation, also known as the operator-sum representation, is a useful way to describe the noise phenomenology in quantum systems
The Choi representation, also known as the Choi-Jamiolkowski isomorphism, is a way to represent a quantum channel as a matrix.
The SuperOp representation, also known as the Liouville superoperator representation, is a way to represent a quantum channel as a linear map acting on the vectorized density matrices.
The Chi representation is another way to represent a quantum channel as a matrix. In this representation. The Chi representation is useful for analyzing certain properties of quantum channels, such as their entanglement-breaking nature, and for performing quantum process tomography in certain experimental setups.
PTM is a matrix that describes the impact of a quantum channel on the input quantum state. Specifically, it represents how the quantum channel maps the Pauli operator of the input quantum state to the Pauli operator of the output quantum state.