dorsal/arxiv
View SchemaPauli Tomography: complete characterization of a single qubit device
| Authors | Francesco De Martini, Andrea Mazzei, Marco Ricci, Giacomo Mauro D'Ariano |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0207143 |
| URL | https://arxiv.org/abs/quant-ph/0207143 |
Abstract
The marriage of Quantum Physics and Information Technology, originally motivated by the need for miniaturization, has recently opened the way to the realization of radically new information-processing devices, with the possibility of guaranteed secure cryptographic communications, and tremendous speedups of some complex computational tasks. Among the many problems posed by the new information technology there is the need of characterizing the new quantum devices, making a complete identification and characterization of their functioning. As we will see, quantum mechanics provides us with a powerful tool to achieve the task easily and efficiently: this tools is the so called quantum entanglement, the basis of the quantum parallelism of the future computers. We present here the first full experimental quantum characterization of a single-qubit device. The new method, we may refer to as ''quantum radiography'', uses a Pauli Quantum Tomography at the output of the device, and needs only a single entangled state at the input, which works on the test channel as all possible input states in quantum parallel. The method can be easily extended to any n-qubits device.
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"abstract": "The marriage of Quantum Physics and Information Technology, originally\nmotivated by the need for miniaturization, has recently opened the way to the\nrealization of radically new information-processing devices, with the\npossibility of guaranteed secure cryptographic communications, and tremendous\nspeedups of some complex computational tasks. Among the many problems posed by\nthe new information technology there is the need of characterizing the new\nquantum devices, making a complete identification and characterization of their\nfunctioning. As we will see, quantum mechanics provides us with a powerful tool\nto achieve the task easily and efficiently: this tools is the so called quantum\nentanglement, the basis of the quantum parallelism of the future computers. We\npresent here the first full experimental quantum characterization of a\nsingle-qubit device. The new method, we may refer to as \u0027\u0027quantum\nradiography\u0027\u0027, uses a Pauli Quantum Tomography at the output of the device, and\nneeds only a single entangled state at the input, which works on the test\nchannel as all possible input states in quantum parallel. The method can be\neasily extended to any n-qubits device.",
"arxiv_id": "quant-ph/0207143",
"authors": [
"Francesco De Martini",
"Andrea Mazzei",
"Marco Ricci",
"Giacomo Mauro D\u0027Ariano"
],
"categories": [
"quant-ph"
],
"title": "Pauli Tomography: complete characterization of a single qubit device",
"url": "https://arxiv.org/abs/quant-ph/0207143"
},
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