A quantum image searching method is proposed based on the probability distributions of the readouts from the quantum measurements. It is achieved by using low computational resources which are only a single Hadamard g...A quantum image searching method is proposed based on the probability distributions of the readouts from the quantum measurements. It is achieved by using low computational resources which are only a single Hadamard gate combined with m + 1 quantum measurement operations. To validate the proposed method, a simulation experiment is used where the image with the highest similarity value of 0.93 to the particular test image is retrieved as the search result from 4 × 4 binary image database. The proposal provides a basic step for designing a search engine on quantum computing devices where the image in the database is retrieved based on its similarity to the test image.展开更多
为了进一步验证QRMW(Quantum representation of multi-wavelength images)模型的正确性,在IBM量子计算框架Qiskit上分别制备了2×2大小与和32×32大小的QRMW量子图像的量子态,提出了一种QRMW图像的颜色通道交换算子和QRMW图像...为了进一步验证QRMW(Quantum representation of multi-wavelength images)模型的正确性,在IBM量子计算框架Qiskit上分别制备了2×2大小与和32×32大小的QRMW量子图像的量子态,提出了一种QRMW图像的颜色通道交换算子和QRMW图像的颜色置乱算子,并给出了它们实现的量子线路,进而在IBM Qiskit环境下对新提出的算子进行了仿真实现。研究结果证实了QRMW模型的可行性以及所提出算子的可行性与正确性。展开更多
A framework that introduces chromatic considerations to earlier descriptions of movies on quantum computers is proposed. This chromatic framework for quantum movies （CFQM） integrates chromatic components of individu...A framework that introduces chromatic considerations to earlier descriptions of movies on quantum computers is proposed. This chromatic framework for quantum movies （CFQM） integrates chromatic components of individual frames （each a multi-channel quantum image - MCQI state） that make up the movie, while each frame is tagged to a time component of a quantum register （i.e., a movie strip）. The formulation of the CFQM framework and properties inherent to the MCQI images facilitate the execution of a cortege of carefully formulated transformations including the frame-to-frame （FTF）, color of interest （COI）, and subblock swapping （SBS） operations that are not realizable on other quantum movie formats. These innovative transformations are deployed in the creation of digital movie-like montages on the CFQM framework. Future studies could explore additional MCQI-related operations and their use to execute more advanced montage applications.展开更多
In this paper, we propose a novel quantum secret image-sharing scheme which constructs m quantum secret images into m+1 quantum share images. A chaotic image generated by the logistic map is utilized to assist in the ...In this paper, we propose a novel quantum secret image-sharing scheme which constructs m quantum secret images into m+1 quantum share images. A chaotic image generated by the logistic map is utilized to assist in the construction of quantum share images first. The chaotic image and secret images are expressed as quantum image representation by using the novel enhanced quantum representation. To enhance the confidentiality, quantum secret images are scrambled into disordered images through the Arnold transform. Then the quantum share images are constructed by performing a series of quantum swap operations and quantum controlled-NOT operations. Because all quantum operations are invertible, the original quantum secret images can be reconstructed by performing a series of inverse operations. Theoretical analysis and numerical simulation proved both the security and low computational complexity of the scheme, which has outperformed its classical counterparts. It also provides quantum circuits for sharing and recovery processes.展开更多
文摘A quantum image searching method is proposed based on the probability distributions of the readouts from the quantum measurements. It is achieved by using low computational resources which are only a single Hadamard gate combined with m + 1 quantum measurement operations. To validate the proposed method, a simulation experiment is used where the image with the highest similarity value of 0.93 to the particular test image is retrieved as the search result from 4 × 4 binary image database. The proposal provides a basic step for designing a search engine on quantum computing devices where the image in the database is retrieved based on its similarity to the test image.
文摘针对量子图像增强问题,提出一种基于彩虹编码的量子图像伪彩色增强方法。首先,使用NEQR(Novel Enhanced Quantum Representation)模型表示灰度图像,接着设计和优化RGB三通道颜色转换模块的量子线路,最后用QRMW(Quantum Representation of Multi Wavelength Images)模型表示伪彩色图像。为了验证所提方法的有效性,在IBM量子计算框架Qiskit上制备2×2大小与32×32大小的NEQR灰度图像,通过对量子线路测量坍缩后生成对应大小的QRMW伪彩色图像。实验结果表明,与经典和已有的量子图像伪彩色增强方法相比,该方法在处理大小为2n×2n、色深为2q的图像时,所需的量子基本门个数为958,时间复杂度仅为常数级O(1),空间复杂度为O(2n+2q+3),显著降低了量子成本,并且处理后图像的信息熵和清晰度指标良好。
文摘A framework that introduces chromatic considerations to earlier descriptions of movies on quantum computers is proposed. This chromatic framework for quantum movies （CFQM） integrates chromatic components of individual frames （each a multi-channel quantum image - MCQI state） that make up the movie, while each frame is tagged to a time component of a quantum register （i.e., a movie strip）. The formulation of the CFQM framework and properties inherent to the MCQI images facilitate the execution of a cortege of carefully formulated transformations including the frame-to-frame （FTF）, color of interest （COI）, and subblock swapping （SBS） operations that are not realizable on other quantum movie formats. These innovative transformations are deployed in the creation of digital movie-like montages on the CFQM framework. Future studies could explore additional MCQI-related operations and their use to execute more advanced montage applications.
基金Project supported by the National Key Research and Development Plan(Grant Nos.2018YFC1200200 and 2018YFC1200205)the National Natural Science Foundation of China(Grant No.61463016)the "Science and Technology Innovation Action Plan" of Shanghai in 2017(Grant No.17510740300)
文摘In this paper, we propose a novel quantum secret image-sharing scheme which constructs m quantum secret images into m+1 quantum share images. A chaotic image generated by the logistic map is utilized to assist in the construction of quantum share images first. The chaotic image and secret images are expressed as quantum image representation by using the novel enhanced quantum representation. To enhance the confidentiality, quantum secret images are scrambled into disordered images through the Arnold transform. Then the quantum share images are constructed by performing a series of quantum swap operations and quantum controlled-NOT operations. Because all quantum operations are invertible, the original quantum secret images can be reconstructed by performing a series of inverse operations. Theoretical analysis and numerical simulation proved both the security and low computational complexity of the scheme, which has outperformed its classical counterparts. It also provides quantum circuits for sharing and recovery processes.
