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.

United States stamps, postal history in April 22 Cherrystone auction – Internet Philatelic Dealers Association Inc

By Charles Snee

Cherrystone Philatelic Auctioneers will present a sale of choice United States stamps and postal history April 22 at the firm’s gallery in New York City.

Among the 740 lots available for bids are stamps from the Richard Carl collection and “nice sections of Stampless covers, Free Franks and Autographed letters, Postmasters’ Provisionals, an excellent range of imperf. Classics and other 19th Century used and unused, including Fancy Cancels, Civil War Patriotics, Territorial covers, 20th Century with Regular Issues and Commemoratives to $5,” according to Cherrystone.

 Bidders will also find modern errors and varieties, airmail and postage due issues, large die proofs, Confederate States, U.S. possessions, and large lots and collections.

Among the 29 lots of 1869 Pictorial items is a used horizontal block of 12 of the 30¢ Shield, Eagle and Flag stamp (Scott 121).

Cherrystone describes the block as having “excellent colors” and being “well centered for a large multiple.” Some minor creases and wrinkles that have been ironed out are present, according to Cherrystone.

A block of 12 is the largest known multiple of the 30¢ Pictorial stamp, and Cherrystone states that “three or four are known.”

The 2021 Scott Specialized Catalogue of United States Stamps and Covers does not value a block of 12 of Scott 121 in unused or used condition, but a used block of four is valued at $3,750. Cherrystone lists the block of 12 in this sale with a minimum bid of $1,500.

One of the more eye-catching items among the 37 lots of modern errors and proof material is a never-hinged example of the 1989 $2.40 Moon Landing Priority Mail stamp with the engraved black omitted (Scott 2419a).

The stamp was issued July 20, 1989, 20 years to the day after Apollo 11 touched down on the surface of the moon to mark one of the most significant achievements of the 20th century.

This particular error of the $2.40 Moon Landing stamp makes the two astronauts planting a U.S. flag on the moon look like white ghosts against the dark blue background.

The Scott Catalogue of Errors on U.S. Postage Stamps states that 60 to 80 examples of Scott 2419a are known and cautions that “no black engraved cross hatching should be visible on the white area of the space suits.”

The error, which is valued at $1,350 in the 2021 Scott U.S. Specialized catalog, is offered with a minimum bid of $280.

The sale can be viewed on the Cherrystone website, with online bidding options available. Information also is available from Cherrystone Philatelic Auctioneers, 119 W. 57th St., Suite 316, New York, NY 10019.

Connect with Linn’s Stamp News: 

    Sign up for our newsletter
    Like us on Facebook
    Follow us on Twitter

Source: View original article

Leave a Reply