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Stephen J. Wiesner (1942 – August 12, 2021) [1] was an American-Israeli research physicist, inventor and construction laborer. As a graduate student at Columbia University in New York in the late 1960s and early 1970s, he discovered several of the most important ideas in quantum information theory, including quantum money [2] (which led to ...
Stephen J. Wiesner (1942 – August 12, 2021) was an American-Israeli research physicist, inventor and construction laborer.
Mar 10, 2023 · Wiesner was Stephen Wiesner, who in the late 1960s was a graduate student at Columbia University who was later credited with formulating some of the basic principles of quantum information theory. Wiesner’s key contribution was a paper that was initially spurned.
research physicist. Learn about this topic in these articles: association with Bennett. In Charles H. Bennett. …became friends with fellow student Stephen Wiesner. They kept in touch while Wiesner went to graduate school at Columbia, and Wiesner told Bennett about his idea for using quantum mechanics to create money that could not be counterfeited.
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Before she became a theoretical physicist, Stephanie Wehner was a hacker. Like most people in that arena, she taught herself from an early age. At 15, she spent her savings on her first dial-up modem, to use at her parents’ home in Würzburg, Germany. And by 20, she had gained enough street cred to land a job in Amsterdam, at a Dutch Internet provider started by fellow hackers.
A few years later, while working as a network-security specialist, Wehner went to university. There, she learnt that quantum mechanics offers something that today’s networks are sorely lacking — the potential for unhackable communications. Now she is turning her old obsession towards a new aspiration. She wants to reinvent the Internet.
The ability of quantum particles to live in undefined states — like Schrödinger’s proverbial cat, both alive and dead — has been used for years to enhance data encryption. But Wehner, now at Delft University of Technology in the Netherlands, and other researchers argue that they could use quantum mechanics to do much more, by harnessing nature’s uncanny ability to link, or entangle, distant objects, and teleporting information between them. At first, it all sounded very theoretical, Wehner says. Now, “one has the hope of realizing it”.
Proponents say that such a quantum internet could open up a whole universe of applications that are not possible with classical communications, including connecting quantum computers together; building ultra-sharp telescopes using widely separated observatories; and even establishing new ways of detecting gravitational waves. Some see it as one day displacing the Internet in its current form. “I’m personally of the opinion that in the future, most — if not all — communications will be quantum,” says physicist Anton Zeilinger at the University of Vienna, who led one of the first experiments on quantum teleportation1, in 1997.
A team at Delft has already started to build the first genuine quantum network, which will link four cities in the Netherlands. The project, set to be finished in 2020, could be the quantum version of ARPANET, a communications network developed by the US military in the late 1960s that paved the way for today’s Internet.
•Quantum ‘spookiness’ passes toughest test yet
•Quantum-teleportation experiments turn 20
- Davide Castelvecchi
- 2018
Sep 22, 2022 · In 1968, Stephen Wiesner, then a graduate student at Columbia University, developed a new way of encoding information with polarized photons. Among other things, Wiesner proposed that the...
Feb 16, 2018 · Stephen Wiesner, then a young physicist at Columbia University in New York City, saw potential in one of the most basic principles of quantum mechanics: that it is impossible to measure a...
