tellmarcosIn the age of rapid technological advancement, the concept of a quantum internet has captured the imagination of scientists and researchers worldwide. Unlike the classical internet we use today, a quantum internet promises to revolutionize communication by harnessing the strange and counterintuitive properties of quantum mechanics. In this article, we'll delve into the fascinating world of the quantum internet, exploring its potential applications, challenges, and the current state of research. tellhappystar tellgamestopWhat is the Quantum Internet? tellgamestop telldunkin.clickTo understand the quantum internet, we must first grasp the fundamental principles of quantum mechanics. Quantum mechanics describes the behavior of matter and energy at the smallest scales, where classical physics no longer applies. Key features of quantum mechanics include superposition and entanglement, which form the foundation of quantum communication. tellculvers tellcitybbqSuperposition: In quantum mechanics, particles can exist in multiple states simultaneously. This property allows quantum bits or qubits to represent both 0 and 1 at the same time, significantly increasing computational power. tellcaribou tellbrueggersEntanglement: When two quantum particles become entangled, their properties become correlated in such a way that the state of one particle instantaneously affects the state of the other, regardless of the distance separating them. This property is at the heart of quantum teleportation and quantum cryptography. tellbostonmarket The Quantum Internet's Potential Applications: Ultra-Secure Communication: One of the most promising applications of the quantum internet is quantum cryptography, which enables perfectly secure communication. Any attempt to eavesdrop on quantum-encrypted messages would disrupt the entangled particles, alerting both the sender and receiver to the intrusion. Quantum Teleportation: Although it won't lead to instantaneous transportation as seen in science fiction, quantum teleportation allows the transfer of quantum states between distant locations, making it a crucial tool for quantum computing and communication. Quantum Computing: The quantum internet will pave the way for quantum computing, which has the potential to solve complex problems exponentially faster than classical computers. This could revolutionize fields like drug discovery, cryptography, and optimization. Challenges and Current Research: Building a quantum internet is no easy task and is fraught with challenges. Some of the key hurdles include: Quantum Decoherence: Quantum systems are extremely delicate and susceptible to external interference, leading to decoherence, which disrupts quantum states. Researchers are working on developing error-correction techniques to mitigate this issue. Quantum Repeaters: As entangled particles lose their coherence over distance, the development of quantum repeaters is crucial to extend the range of quantum communication. This involves creating intermediate nodes that re-establish entanglement between distant qubits. Practical Implementation: Transforming theoretical concepts into practical, scalable technologies is a significant challenge. Researchers are exploring various physical systems, such as trapped ions, superconducting circuits, and photon-based approaches, to create viable quantum communication devices. The quantum internet holds immense promise for the future of communication and computing. While many challenges remain to be overcome, researchers are making rapid progress in developing the necessary technologies. As the quantum internet inches closer to reality, it has the potential to transform industries, enhance security, and unlock new frontiers in science and technology, ushering in an era of truly quantum communication.

Croatia Issued Stamps on Strictly Protected Floral Species – Internet Philatelic Dealers Association Inc

Snake’s head:Snake’s head is a strictly protected plant species from the lily family (Liliaceae). This perennial bulbous monocotyledon rarely grows higher than 20 cm and flowers in early spring, usually producing a single large flower. The snake’s head is a widespread species found almost in entire Europe and in western Asia, but is becoming increasingly rare in some regions due to habitat loss. It is thus featured in the Croatian Red Book as a vulnerable species (VU). Snake’s head is threatened mainly by human activity, including habitat destruction due to agriculture and urbanization, but also habitat neglect due to discontinuation of mowing and vegetation succession.Entire-petalled gorse:Entire-petalled gorse is a strictly protected plant species from the pea family (Fabaceae). This low-lying, very ramified shrub is only about 15 cm tall and sports silvery, fluffy young shoots. Unlike most species in its genus, entire-petalled gorse has no thorns and its leaves are not simple, but composed of three leaflets. Its inflorescences usually also comprise three golden-yellow flowers, with a build typical of the pea family. The entire-petalled gorse is in bloom between May and July. In Croatia, this relict North Illyrian endemic species inhabits sun-kissed, bora-swept grasslands from Gorski kotar to Southern Velebit, where its range ends. Entire-petalled gorse has also been found in Slovenia and Italy, but much more rarely than in Croatia, where it is a part of several endemic plant communities, and even entirely dominant in places. In spite of its relatively large range, the species is categorised as data deficient (DD) in the Croatian Red Book and in IUCN’s Red Lists.

Tommasini’s sandwort:Tommasini’s sandwort is a strictly protected plant species from the carnation family (Caryophyllaceae). The stenoendemic sandwort named in honour of Muzio Tommasini (1794-1879), botanist and Mayor of Trieste, as well as its close relative, the more widespread mossy sandwort (Moehringia muscosa), resemble a moss at the first glance. This frail, turfy perennial plant usually grows no higher than 10 cm. It is in bloom in April and May, when it produces small flowers with four white petals each. It resides in the cracks and on the shelves of wet and shady limestone outcrops in Kvarner and Liburnija as a part of equally endemic plant communities of the so-called karst edge at the north of the Istrian Peninsula.

Issue Date:20.03.2020 Designer:Dean Roksandić, designer from Zagreb Printer:AKD d.o.o., Zagreb Process:Offset Colours:Multicoloured Size:29.82 x 35.50 mm

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