Title:
量子回路および量子計算機
Document Type and Number:
Japanese Patent JP4030838
Kind Code:
B2
Abstract:
A quantum circuit and a quantum computer are capable of performing multi-bit quantum computation. In the quantum circuit, a quantum bit is represented by polarization directions of light, a sequence of polarized light pulses representing a quantum bit string is sequentially supplied to the quantum circuit, and an amount of polarization rotation and phase difference applied to a certain light pulse are determined on the basis of a result of a polarization measurement of a preceding input light pulse sequence, thus realizing a controlled-unitary transform. In addition, regarding the light pulses representing the quantum bits, the number of photons included in one pulse is larger than 1, resulting in a reduction of the influence of error.
Inventors:
Akihisa Tomita
Application Number:
JP2002255649A
Publication Date:
January 09, 2008
Filing Date:
August 30, 2002
Export Citation:
Assignee:
Japan Science and Technology Agency
Akihisa Tomita
Akihisa Tomita
International Classes:
G02F3/00; G06E1/00; G06F17/14; G06N99/00
Domestic Patent References:
| JP2001028584A | ||||
| JP2002064480A | ||||
| JP2000324100A |
Other References:
富田章久,光による量子ゲートの実現について,Computer Today,日本,株式会社サイエンス社,2001年 9月 1日,Vol.18 No.5,p17-23
富田章久,半古典的量子フーリエ変換 ショアのアルゴリズムの後半部を実現,数理科学,日本,株式会社サイエンス社,2004年 6月 1日,Vol.42 No.6,p20-24
富田章久,半古典的量子フーリエ変換 ショアのアルゴリズムの後半部を実現,数理科学,日本,株式会社サイエンス社,2004年 6月 1日,Vol.42 No.6,p20-24
Attorney, Agent or Firm:
Mamoru Shimizu