A reversible gate moving method for reversible circuit optimization

A circuit and combined technology, which is applied in the field of reversible gate movement for reversible circuit optimization, can solve the problem that reversible circuits cannot obtain ideal optimization effects, and achieve the effects of improved optimization results, strong applicability, and large moving range

Active Publication Date: 2017-09-26
南通大学技术转移中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing reversible gate moving method and gate sequence reduction method are relatively simple, and ideal optimization results cannot be obtained in actual reversible circuit optimization.

Method used

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  • A reversible gate moving method for reversible circuit optimization
  • A reversible gate moving method for reversible circuit optimization
  • A reversible gate moving method for reversible circuit optimization

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Embodiment Construction

[0022] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with existing methods and accompanying drawings. The existing methods are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0023] Reversible gates refer to logic gates with one-to-one correspondence between input and output. Common reversible gates include Toffoli gates, Fredkin gates, and Peres gates. This invention only involves Toffoli gates and reversible gates formed by cascading Toffoli gates. logic circuit.

[0024] Definition 1. For variable domain set X={x 1 ,x 2 ,...,x n}, the multi-control Toffoli gate is shaped like TOF(C; t), where the control line set t=x j is the target line, and The Toffoli keeper enters (x 1 ,x 2 ,...,x n ) maps to The target bit x of the Toffoli gate when all positive (negative) control line values ​​are 1 (0) j v...

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Abstract

The invention discloses a reversible gate moving method for reversible circuit optimization, including the description of the new reversible gate moving method, three sub-sequence simplification methods based on the moving method, and finally gives the reversible circuit based on these methods The specific process of optimization. The reversible gate moving method provided by the present invention has fewer constraints and stronger applicability, and makes the moving range of the reversible gate in the reversible circuit larger, and can move more gates in reducible subsequences together for reduction It solves the problem that some reversible gates cannot be further optimized because they cannot be moved in the simplification of the original reversible circuit. The new reversible gate movement method and the simplification method based on it are effective supplements to the existing reversible gate movement and simplification methods, and can further improve the optimization effect of reversible circuits.

Description

technical field [0001] The invention relates to a reversible gate moving method for reversible circuit optimization. Based on the moving method, three simplification methods for reversible circuit subsequences are given. These methods are mainly used in the optimization problem of reversible logic circuits. Through the reversible gate The movement of the reducible gate sequence can be moved together for reduction, which can effectively reduce the cost of the reversible circuit. Background technique [0002] Reversible logic synthesis is an important content of reversible computing, and has important applications in quantum computing, low-energy design, nanotechnology and other fields. Reversible logic synthesis means that given the input and output values ​​of a reversible logic function, the computer obtains the reversible logic circuit that realizes the function through relevant algorithms and makes the circuit cost as small as possible. Reversible logic synthesis can be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 程学云管致锦朱鹏程马海英陆和萍丁卫平徐明强张义清徐敏朱玲玲何金凤鹿玉徐海
Owner 南通大学技术转移中心有限公司
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