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Atomic device

外国特許コード F110005482
整理番号 K05503US
掲載日 2011年9月6日
出願国 アメリカ合衆国
出願番号 54890304
公報番号 20070158541
公報番号 7459673
出願日 平成16年3月12日(2004.3.12)
公報発行日 平成19年7月12日(2007.7.12)
公報発行日 平成20年12月2日(2008.12.2)
国際出願番号 JP2004003343
国際公開番号 WO2004082027
国際出願日 平成16年3月12日(2004.3.12)
国際公開日 平成16年9月23日(2004.9.23)
優先権データ
  • 特願2003-068764 (2003.3.13) JP
  • 2004JP003343 (2004.3.12) WO
発明の名称 (英語) Atomic device
発明の概要(英語) A trapping position 30 is defined on a substrate 1, and an electrode pattern 2 is formed on the substrate 1, having a first pair of electrodes 21 including electrodes 22 and 23 formed at positions opposite each other with the trapping position 30 placed therebetween along a diagonal x-axis, and a second pair of electrodes 26 including electrodes 27 and 28 formed at positions opposite each other with the trapping position 30 placed therebetween along a y-axis orthogonal to the x-axis.
The atomic device alternately switches between a first state and a second state to trap a neutral atom at the trapping position 30; in the first state, the electrode 22 of the first pair of electrodes 21 is set at a positive potential +V0 with respect to a reference potential and the electrode 23 is set at a negative potential -V0, and in the second state, the electrode 27 of the second pair of electrodes 26 is set at the positive potential +V0 and the electrode 28 is set at the negative potential -V0.
This allows for realizing an atomic device which can facilitate integration of atomic circuits and reduce disturbances or the like.
従来技術、競合技術の概要(英語) BACKGROUND ART
Conventional information processing technology has employed electronics technology in which use is made of electron flows and photonics technology in which photon flows are utilized.
Recently, in contrast to this, discussions have focused on the possibility of realizing an "atomic circuit" in which controlled flows of atoms are coherently operated on a substrate.
Like the development of electronics or photonics in which employed is sophisticated control of electrons or photons, such an atom control technology will be potentially developed as a new information processing technology which may be referred to as "atomtronics."
In particular, particles such as atoms or molecules for use with this technology have a larger number of degrees of interior or exterior freedom resulting from their complicated structure as compared to electrons or photons.
Accordingly, the establishment of the technology in which such particles are coherently controlled for use may be expected to bring profound effects on quantum information processing, quantum computing, ultimate measurement and so forth in the future (e.g., see the document: Donatella Cassettari et al., "Beam Splitter for Guided Atoms", Phys.
Rev. Lett., Vol. 85, pp. 5483-5487 (2000)).

特許請求の範囲(英語) [claim1]
1. An atomic device using a neutral particle which is a neutral atom or a neutral molecule, comprising a first pair of electrodes provided at positions on a substrate with a trapping position disposed therebetween, and along a first axis passing through the trapping position, the trapping position being defined at a predetermined position on the substrate, anda second pair of electrodes provided at positions on the substrate with the trapping position disposed therebetween, and along a second axis provided at a predetermined angle to the first axis and passing through the trapping position, whereinthe atomic device switches between a first state and a second state alternately to trap a neutral particle at the trapping position, one of the electrodes of the first pair of electrodes being set at a positive potential with respect to a reference potential and the other electrode being set at a negative potential in the first state, one of the electrodes of the second pair of electrodes being set at a positive potential with respect to the reference potential and the other electrode being set at a negative potential in the second state.
[claim2]
2. The atomic device according to claim 1, wherein the two electrodes of the second pair of electrodes are set at the reference potential in the first state, and the two electrodes of the first pair of electrodes are set at the reference potential in the second state.
[claim3]
3. The atomic device according to claim 1, wherein the neutral particle is a neutral atom or a neutral molecule having no spin.
[claim4]
4. The atomic device according to claim 1, wherein a group of electrodes made up of the first pair of electrodes and the second pair of electrodes has an electrode spacing of 10 mu m or less.
[claim5]
5. The atomic device according to claim 1, wherein the substrate is a semiconductor substrate on which an electronic device or an optical device is formed.
[claim6]
6. The atomic device according to claim 1, wherein the substrate is a transparent substrate which transmits light of a predetermined wavelength.
[claim7]
7. The atomic device according to claim 1, wherein a plurality of the trapping positions are defined on the substrate, a group of electrodes made up of the first pair of electrodes and the second pair of electrodes is provided for each of the plurality of trapping positions, and a potential of each electrode included in the plurality of groups of electrodes is switched, thereby trapping the neutral particle at the trapping position and moving the neutral particle between the trapping positions adjacent to each other.
[claim8]
8. The atomic device according to claim 7, wherein the atomic device uses the neutral particle to which information is attached, and the plurality of groups of electrodes are formed as an atom shift register for transferring the information by sequentially moving the neutral particle between the trapping positions adjacent to each other.
[claim9]
9. The atomic device according to claim 7, wherein the atomic device uses at least two of the neutral particles to which information is attached, and the plurality of groups of electrodes are formed to be able to provide a quantum correlation to the two neutral particles.
  • 発明者/出願人(英語)
  • KATORI HIDETOSHI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 250/251
  • 257/E29.301
参考情報 (研究プロジェクト等) PRESTO Light and Control AREA
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