109 results about "Quantum image" patented technology

The present invention is directed to a method of integrating information, including real-time information, into a virtual thematic environment using a computer system, including accessing the stored information from a database or downloading the real-time information from a source external to the thematic environment; inserting the real-time information into the thematic environment; and displaying the information to a user within the thematic environment. In one embodiment, the computer system is connected to a holographic projection system such that the images from the thematic environment can be projected as holographic projections. The computer system includes an interactive software application platform having at least one thematic/publishing logic module which contains thematic environment rules; at least one digital content library module which provides content management on the thematic environment; and at least one quantum imaging environment (QIE) module which interprets content such that the content is manipulated and accessed by any device.

An apparatus for generating a shared quantum key between a sender and a receiver comprises a sending apparatus which generates entangled photon pairs, and a receiving apparatus. A shared quantum key can be generated using temporal coincidences between photon detection events. For example, coincidences may be determined between sender and receiver photon detection events using detection data shared through a non-secure communications link between the sender and receiver. The quantum key can be used in encrypted communications. Similar apparatus and methods can be used for quantum imaging.

The invention discloses laser radar based on a highly-correlated quantum imaging principle, which consists of a pulse laser, a parameter down-conversion non-linear device, a receiving lens, a photon detector, an imaging lens, an area-array detector, a time delay correlator and a signal processor. The pulse laser transmits laser pulse to generate two laser beams having different wavelengths and the highly correlation by parameter down-conversion non-linear device, one path of laser beam with long wavelength is irradiated on a measured object and is focused on a photon detector through a receiving lens to detector after being reflected, and a switch signal indicative of the detecting result of the photon is output; the other path of laser beam with short wavelength is irradiated to the area-array detector through an imaging lens to acquire a two-dimension photon image signal; and two paths of signals are correlated and integrated by the signal processor to acquire image and distance information of the measured object. The laser radar effectively solves the problem of transmission loss by using the laser with the long wavelength in an atmosphere window to realize the ultra-long distance detection and realize the super-resolution detection by using the highly-correction effect.

A quantum photonic imaging device used in an underwater vehicle for stealthy detection of underwater objects includes a photon generating module that generates an entangled pair of photons that includes a signal photon and an ancilla photon, wherein the ancilla photon is retained within the device; a transmitter that transmits the signal photon towards a region of space for detecting an underwater object; a receiver that detects an incoming photon to the device; and a correlation module that distinguishes the signal photon that is reflected back to the receiver due to a presence of the object from environmental noise photons, wherein the distinguishing includes determining an entanglement correlation of the detected photon with the ancilla photon, and wherein a presence of the entanglement correlation between the detected photon and the ancilla photon indicates that the detected photon is the signal photon reflected back from the object.

Disclosed are a calculated intensity correlated imaging autocollimator and a measurement method. The calculated intensity correlated imaging autocollimator comprises a light source, a digital micromirror device (DMD), a controller, a beam splitter, a lens, a device-under-test (DUT) reflective mirror, a CCD and an intensity correlated calculation module. A synchronous control module of the controller generates a synchronous clock signal which is applied to the DMD and the CCD. The intensity correlated calculation module records a light field modulation matrix generated by a light field modulation module and an echo signal received by the CCD simultaneously, and performs second-order intensity correlated calculation to indirectly calculate a tiny rotation angle of the DUT. The invention introduces a calculated correlated imaging method in quantum imaging technology to the design of the autocollimator, and can be used for effectively reducing the measurement errors caused by air turbulence and other factors and improving the sensitivity and stability of a system.

Disclosed is a quantum image encryption method based on image association dissection. A quantum-state superposition and measurement principle is used to establish correlation between image pixels. An image is dissected into superposition of a series of characteristic sub-images. Conversion operations are performed on the characteristic sub-images stored in a complete binary-tree digit group through use of a random phase door and a quantum rotating door and then a plurality of superpositions are performed on all the images through quantum-state superposition so as to obtain a cipher image. Schmidt orthogonal dissection is performed on the quantum random phase door, the quantum rotating door, a coefficient matrix and the cipher image so as to obtain a standard orthogonal ground state which is then used as a key. The quantum image encryption method based on the image association dissection has a larger key space so that strong attacks can be resisted and combination of a quantum-mechanical theory and an image encryption technology is realized. The method has classical information theory security and quantum information theory security so that quantum image encryption surpasses restriction of classical image encryption and compared with classical images, quantum images are higher in security.

The invention relates to a quantum image matching method. In combination with quantum calculation and classic computer image matching techniques, the method comprises steps as follows: S0, the size of a quantum reference image is set to be 2<n>*2<n>, and the size of a quantum template image is set to be 2<m>*2<m>; S1, the quantum reference image is prepared and stored in an NEQR manner, and an NEQR expression shown in the specification of the quantum reference image is obtained; S2, a quantum route U0 of the quantum reference image is designed, and the output state, shown in the specification, of the quantum reference image is obtained; S3, the quantum template image is prepared and stored in a classic image processing manner, a quantum route of the quantum template image is designed according to independent basic state expressions adopted for pixel point coordinates and corresponding pixel values, and the output state, shown in the specification, of the quantum template image is obtained; S4, quantum image matching is conducted according to the output state, shown in the specification, of the quantum reference image, the output state, shown in the specification, of the quantum template image as well as two added auxiliary quantum bits. Quantum image matching is realized by use of basic quantum bit gates and modular quantum routes, the matching efficiency is high, and the application range is wide.

A wavelet fractal based on remotely sensed image interplation method adopts wavelet analysing and fractal technology adjoint to realize remotely sensed image interplation. It contains firstly making wavelet conversion to remotely sensed image to obtain remotely sensed image one low-frequency component and three high frequency component, dividing each high frequency component into mutually exclusive subimage block, utilizing image fractal character to calculate each subimage block fractal parameter and making self adaptive fractal interplation to every subimage block, then merging high frequency component subimage block and original image after fractal interplation, finally making inverse wavelet conversion to merged image to obtain high resolution remotely sensed image processed by wavelet fractal interplation.

A strength related quantum imaging microscope is characterized by including a pulsed light source. The light beams generated by the pulse light source are divided into transmission light beams and reflectance light beams by a beam splitter; an object to be measured, an object arm imaging lens and an object arm detector are arranged in sequence at the transmission light beam direction to constitute an object arm, a virtual plane, a reference arm imaging lens and a reference arm detector are arranged in sequence at the reflection light beam direction to constitute a reference arm; the object arm detector and the reference arm detector are respectively connected to the computer through a first data acquisition card and a second data acquisition card, the computer is provided with a strength related arithmetic software, the computer is respectively connected to the pulse light source, the object arm detector and the reference arm detector through a synchronizing signal generator, and the reference arm imaging lens is provided with high numerical aperture. The invention can obtain a high resolutions image by increasing the numerical aperture of the reference arm imaging lens.

The invention discloses a hyperchaotic system based quantum image encryption method. The method comprises: finishing quantum image encryption by utilizing CNOT operation to realize XOR operation of a quantum image, namely, generating a hyperchaotic sequence by a Chen's hyperchaotic system, controlling unit transformation and NOT gate by a processed hyperchaotic sequence to construct CNOT transformation, and then, utilizing the CNOT operation to realize the XOR operation of the quantum image, thereby finishing the quantum image encryption. According to the method, the XOR operation of the quantum image is constructed for the first time and applied to the quantum image encryption, so that the attack resistance and security of an encryption algorithm can be enhanced; an initial condition of the Chen's hyperchaotic system serves as a secret key of the encryption algorithm, so that the effect of expanding secret key space is achieved; and the algorithm can resist strong attack, so that the secret key is easier to allocate, store and memorize.