巻号一覧
31 巻, 9 号
選択された号の論文の7件中1～7を表示しています
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「量子光学と量子情報科学」解説小特集号
解説小特集号
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古澤 明2003 年 31 巻 9 号 p. 582-585
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーPDF形式でダウンロード (364K) -
早坂 和弘2003 年 31 巻 9 号 p. 586-591
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーDeterministic generation of single photons is an essential ingredient for quantum information experiments. Controlled emission of single photons into a cavity mode with high efficiency is proposed using a coupled system of an atom and a cavity. This paper reports theoretical discussions on single-photon generation by cavity quantum electrodynamics (Cavity QED) as well as recent progress in experiments with atoms and ions.抄録全体を表示PDF形式でダウンロード (906K) -
笠井 克幸2003 年 31 巻 9 号 p. 592-598
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーThe signal and idler beams from a non-degenerate, above threshold, optical parametric oscillator have a strong quantum correlation, which are called twin beams. This correlation arises from the simultaneous generation of the signal and idler photons in the form of twin pairs of photons through the parametric down conversion, and the generated twin beams have exactly the same photon statistics. As a result, the fluctuations on the difference between the intensities of the twin beams are reduced with respect to the shot noise limit, that is, intensity-difference squeezing. We give a comprehensive overview of the generation of twin beams using the optical parametric oscillator, and the applications exploiting the quantum correlation of twin beams are presented.抄録全体を表示PDF形式でダウンロード (1211K) -
青木 隆朗2003 年 31 巻 9 号 p. 599-604
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーNonlocal correlation of an entangled state enables one to perform quantum communication. Continuous variable bipartite entangled state, or Einstein-Podolsky-Rosen state, has been employed to demonstrate bipartite quantum protocols. By generating multipartite entanglement, it is also possible to perform multipartite quantum protocols. In this paper, we review the generation and verification of continuous variable multipartite entanglement.抄録全体を表示PDF形式でダウンロード (969K) -
市村 厚一2003 年 31 巻 9 号 p. 605-611
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーElectromagnetically induced transparency (EIT) is one of the simplest and most fundamental of schemes to control the quantum-mechanical properties of matter and light, such as the superposition of states, entanglement, and quantum interference, by using light, the nature of which is considerably known. EIT can be employed to realize quantum information processing in applications such as optical quantum logic gates, quantum memories, and quantum computers.抄録全体を表示PDF形式でダウンロード (795K)
一般論文
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岡 潔2003 年 31 巻 9 号 p. 612-617
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーIn the International Thermonuclear Experimental Reactor (ITER), pipe welding/cutting has to be carried out under severe gamma-ray conditions in a limited space inside the pipe. A laser and image transmitting system using a composite-type optical fiber was proposed and tested so as to weld, cut and observe inside a pipe. The composite fiber system consists of one fiber for laser transmission, a number of small fibers for image information transmission located around the laser transmission fiber, and a coupling/distributing device for laser energy and images. As a result, high-power laser transmission for welding/cutting and observation tests using the composite fiber system were successfully carried out. Based on the test results, the proposed laser and image transmission system was determined to be applicable not only in a limited space such as inside the pipe, but also in a human body for medical treatment.抄録全体を表示PDF形式でダウンロード (1314K)
エラータ
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2003 年 31 巻 9 号 p. 625
発行日: 2003年
公開日: 2006/02/03
ジャーナル フリーPDF形式でダウンロード (148K)
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