Engineering Quantum Technology (Radar, Compass, Network, Quantum Computer and Nano-Satellite) in Türkiye

Bogeyman 

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Quantum nano satellites
One of TÜBİTAK BİLGEM's first publications on quantum nano satellites

An application was made on January 6, 2020 for the article to be accepted. This shows that 1 or 1.5 years have passed since the project. An important point for the history of quantum satellite project in Turkey
 
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Brief history of quantum radars. In the article released on September 25, 2020, it is stated that Quantum radars cannot yet overcome stealth technologies.
 

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Quantum Entanglement Drones​


Quantum Entanglement Drones: We are now on the verge of the dawn of a new age. Technological development and scientific studies do not slow down. We have a lot of data to move forward. Drones are one of the leading inventions that are at the forefront of the subject and the technologies that shape our future. Now, drones have begun to be used for the development of quantum technology. One of the drones' new missions was the transmission of a quantum signal in a one kilometer orbit. It also successfully completed this. Two different drones were used in the experiment. Their task would be to produce and distribute photon pairs in structures belonging to quantum communication systems. The trial was successful. Quantum Entanglement Drones were once again tested, and this communication was groundbreaking according to scientists.

Broadcast waves from cell phones, radio stations and Wi-Fi centers are full of information. These waves can transmit quantum encrypted messages to our computers in the future.

The trial was made between two ground stations located 1 km from each other. Two different drones are used for this. With this experiment, it will be possible to establish a quantum network on our residential areas. The fact that drones are mobile will also allow us to reach a very flexible structure.

In an environment where communication is secure on the Internet and cyber attacks are experienced so intensely, data security becomes more and more important every passing minute. Especially the fact that bank employees now work from their homes makes data security incredibly important in this regard. Quantum communication system promises secure communication to the technology world.

What is Quantum Entanglement?​

It is planned to use particles that have a quantum-mechanical relationship in the quantum communication system. Thanks to entangled photons, encrypted messages will be able to travel securely from one place to another.

One of the most widely used systems among the communication systems we are in is fiber optic infrastructures. However, in fiber optic cabling systems, most of the photons have scattering problems before they reach the target. In a sense, we have the trouble of encountering weak signals. Thanks to Quantum Entanglement and Drones, the first steps of a completely different era are before us.

A photon can be sent to the users with the structures consisting of quantum pairs, that is, quantum bits. The loss of entanglement of photons can also create a unique security advantage in terms of cybersecurity. In other words, communication will stop from time to time, which will reduce leakage to communication lines.

Just as the Chinese provided quantum communication in 2018, when quantum data is sent via the atmosphere, problems such as scattering will not be too much, data communication will be more effective. This trial in 2018 took place between China and Austria.

The current record in a fiber optic based quantum encryption is also a record of 421 km.

Ref: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.190502

However, the disadvantage is that communication satellites are expensive for now and their adaptation to changing demands also puts the cost elements forward.

Small drones carrying optical equipment can also provide a flexible solution that can connect multiple users in a quantum network.

Scientists also inform that when communication is required, drones will be used depending on time and location and fixed base stations can be avoided. It is also a fact that existing communication systems also harm the ecosystem.
Studies on Quantum Communication systems continue in various parts of the world. We should also say that drones were used in these studies. In early 2020, Chinese scientists produced data using an 8-bladed drone.

One of the infrared photon pairs produced in this experiment was directed to a ground station named Alice and the other to another ground station named Bob.

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The data of the incoming photons were also collected with a 26mm diameter telescope. We of course also state that the telescope is naturally a telescope with a photon detector.

Diffraction is the leading phenomenon that adversely affects data health in optical communication systems. If the aperture of the telescopes that collect them during the propagation of the photons and as a result of their progress is less than the aperture of the transmitted wave, it will reduce the chance of data collection. In order to eliminate this negativity, a gap of 200 meters between two stations was chosen.

The distance between the drones, that is, between Alice and Bob, was a total distance of 1 km, with the drones of 200 meters and the ground stations 400 meters. The main reason for using two different drones was to separate the stations from each other and to make the experiment more unique and to transfer the data to the other telescope by focusing it.

In the experiment, the Alice detector recorded about a quarter of the photons that came to it, while the Bob detector was recording about four percent of the photons sent to it.

The team performed a different version of the Bell's Inequality test by comparing the photon polarizations taken in Alice and Bob.

Let's talk a little bit about the Bell inequality test. It is a well-known physics experiment designed to test the theory of quantum mechanics in relation to Albert Einstein's concept of local realism.

The theorem is usually proven by considering a quantum system made up of two entangled qubits with original tests as was done on photons.

The most common examples relate to systems of particles circulating in spin or polarization. Quantum mechanics allows predictions of correlations that can be observed when the turns or polarizations of these two particles are measured in different directions.

Bell also demonstrated that if a local latent variable theory is applicable, these correlations must also meet certain constraints called Bell inequalities.

According to the results obtained in the experiment, it was confirmed that the photons were entangled. In other words, this experiment excited the whole scientific community in a way.

Now scientists are expanding the scale of the experiment and planning to experiment with multiple drone systems in much larger areas.

Going back to the initial costs of the system, quantum communication systems require special fiber networks or very expensive satellite connections. Considering that drones also add to the cost of these existing systems, it is a fact that there is a long way to go.

Martin Bohmann, a quantum information expert at the Austrian Academy of Sciences, states that one of the advantages of the drone system is that it can be communicated globally, not on the same line with the points to be contacted.

It points to the need to reduce photon transmission losses to make a multi-drone system competitive with other quantum network technologies, but believes such improvements are possible.
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A different quantum network experiment was conducted in Germany in the context of aviation applications. With an airplane flying at 290 km / h speed, data transmission was realized at 145 bit/h from a distance of 20 km.
 
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Quantum Warfare: Definitions, Overview and Challenges​




I found the graphic's article. They've studied everything about quantum wars in detail. There's even quantum electronic warfare. I've made a series on it myself. I downloaded and reloaded articles that interested me. Note that some articles are not in the main article
 

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I have faith that quantum radars will make the invisible visible and we will have them in due time.
 

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Noise-Tolerant Object Detection and Ranging Using Quantum Correlations​

Imaging, detection and ranging of objects in the presence of significant background noise is a fundamental challenge in optical sensing. Overcoming the limitations imposed in conventional methods, quantum light sources show higher resistance against noise in a time-correlation-based quantum illumination. Here, we introduce the advantage of using not only time correlations but also polarization correlations in photon pairs in the detection of an object that is embedded in a noisy background. In this direction, a time- and polarization-correlated photon pair source using the spontaneous parametric down-conversion process is exploited. We found that the joint measurement of correlated pairs allows distinguishing the signal from the noise photons and that leads to an improved signal-to-noise ratio. Our comparative study revealed that using polarization correlations in addition to time correlations provides improved noise rejection. Furthermore, we show that polarization correlation allows undoing the detector limitation where high background often leads to detector saturation.


@drkadirdurak
Academician Kadir Durak new article
https://twitter.com/drkadirdurak
 

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The first products of ASELSAN's quantum studies appeared

ASELSAN established the Quantum Research Laboratory (KUANTAL) approximately 1 year ago in order to carry out studies in the field of quantum technologies.

KUANTAL, which prepares Turkey for the technologies of the future, is taking firm steps towards becoming the country's first center in this field.

With the projects to be carried out in the laboratory implemented on the TOBB University of Economics and Technology campus, it is aimed to increase Turkey's knowledge and technology readiness level in quantum technologies and transform them into local and national systems through ASELSAN.

The laboratory is aimed to be the only research laboratory in the country and one of the few in the world, in terms of the experimental capabilities and research opportunities it will have.

It is planned to carry out high-impact research and prototype development activities at KUANTAL, with experimental infrastructures and academic collaborations with many universities.

Focusing on the basic technologies in this field, ASELSAN is strengthening its muscles in one of the technologies of the future such as quantum. It is aimed to benefit from the gains here in all technology fields.

While the basic science studies were completed in the laboratory, which constitutes one of the facets of ASELSAN for the civilian field, a series of engineering studies began to be carried out.

Almost all of these studies have application opportunities for all areas in which ASELSAN operates.

In the laboratory, which is in the process of "pre-competitive joint work and cooperation", studies are carried out with researchers and academicians at home and abroad, and with enterprises and companies that have talent in this field.

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Higher performance products will be created


Studies are being carried out in the laboratory to develop products that work at higher performance than today using quantum technologies.

There are a number of special test environments in the laboratory for these studies. During the work, "absolute zero" degree conditions are created to minimize the effect of thermal noise. For this purpose, work is carried out at temperatures close to -273 degrees. In the laboratory, studies are carried out on the energy level of the particles that make up light.

Research in the quantum field will enable sensors or devices in existing products to work better. In this way, capabilities in areas such as communication, perception, information systems and cryptology will further increase.

With quantum systems; Structures that cannot be confused, cannot be imitated, and are noticed in case of intervention are achieved. When external eavesdropping and measurement attempts are made, the system is prevented from functioning properly and it is revealed that eavesdropping is taking place.

The first products emerged within the scope of ASELSAN's studies on quantum technologies. These include the quantum random number generator and the first quantum integrated circuits.

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Stopped brain drain

The laboratory also plays an important role in stopping brain drain and reverse brain drain in an area where trained human resources are quite limited.

KUANTAL enabled quantum researchers from Turkey, who received invitations from different parts of the world, to stay in the country. Some Turkish scientists who have been working in this field abroad thanks to the laboratory have also put returning to the country on their agenda.

ASELSAN aims to contribute to the creation of Turkey's Quantum Strategy Road Map through KUANTAL in the future.

 

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