dorsal/arxiv
View SchemaExperimental investigation of pulsed entangled photons and photonic quantum channels
| Authors | Yoshihiro Nambu, Koji. Usami, Akihisa Tomita, Satoshi Ishizaka, Tohya Hiroshima, Yoshiyuki Tsuda, Keiji Matsumoto, Kazuo Nakamura |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0210147 |
| URL | https://arxiv.org/abs/quant-ph/0210147 |
| DOI | 10.1117/12.483034 |
Abstract
The development of key devices and systems in quantum information technology, such as entangled particle sources, quantum gates and quantum cryptographic systems, requires a reliable and well-established method for characterizing how well the devices or systems work. We report our recent work on experimental characterization of pulsed entangled photonic states and photonic quantum channels, using the methods of state and process tomography. By using state tomography, we could reliably evaluate the states generated from a two-photon source under development and develop a highly entangled pulsed photon source. We are also devoted to characterization of single-qubit and two-qubit photonic quantum channels. Characterization of typical single-qubit decoherence channels has been demonstrated using process tomography. Characterization of two-qubit channels, such as classically correlated channels and quantum mechanically correlated channels is under investigation. These characterization techniques for quantum states and quantum processes will be useful for developing photonic quantum devices and for improving their performances.
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"abstract": "The development of key devices and systems in quantum information technology,\nsuch as entangled particle sources, quantum gates and quantum cryptographic\nsystems, requires a reliable and well-established method for characterizing how\nwell the devices or systems work. We report our recent work on experimental\ncharacterization of pulsed entangled photonic states and photonic quantum\nchannels, using the methods of state and process tomography. By using state\ntomography, we could reliably evaluate the states generated from a two-photon\nsource under development and develop a highly entangled pulsed photon source.\nWe are also devoted to characterization of single-qubit and two-qubit photonic\nquantum channels. Characterization of typical single-qubit decoherence channels\nhas been demonstrated using process tomography. Characterization of two-qubit\nchannels, such as classically correlated channels and quantum mechanically\ncorrelated channels is under investigation. These characterization techniques\nfor quantum states and quantum processes will be useful for developing photonic\nquantum devices and for improving their performances.",
"arxiv_id": "quant-ph/0210147",
"authors": [
"Yoshihiro Nambu",
"Koji. Usami",
"Akihisa Tomita",
"Satoshi Ishizaka",
"Tohya Hiroshima",
"Yoshiyuki Tsuda",
"Keiji Matsumoto",
"Kazuo Nakamura"
],
"categories": [
"quant-ph"
],
"doi": "10.1117/12.483034",
"title": "Experimental investigation of pulsed entangled photons and photonic quantum channels",
"url": "https://arxiv.org/abs/quant-ph/0210147"
},
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