The concept and uses of quantum mechanics in the world of today and tomorrow

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The concept and uses of quantum mechanics in the world of today and tomorrow

What Is Quantum Mechanics? Quantum Physics Defined, Explained

Causality tells us that if you flick a light switch, the bulb will illuminate. However, these principles break down in the quantum realm. Perhaps the most famous example is quantum entanglement, which says that particles on opposite sides of the universe can be intrinsically linked so that they share information instantly—an idea that made Einstein scoff.

But inphysicist John Stewart Bell proved that quantum physics was in fact a complete and workable theory. Here are five of the most intriguing: Clocks synchronize our technological world, keeping things like stock markets and GPS systems in line.

Today, the most precise clocks in the world, atomic clocksare able to use principles of quantum theory to measure time. They monitor the specific radiation frequency needed to make electrons jump between energy levels. The quantum-logic clock at the U. And the NIST strontium clock, unveiled earlier this yearwill be that accurate for 5 billion years—longer than the current age of the Earth.

Such super-sensitive atomic clocks help with GPS navigation, telecommunications and surveying.

The concept and uses of quantum mechanics in the world of today and tomorrow

The precision of atomic clocks relies partially on the number of atoms used. Kept in a vacuum chamber, each atom independently measures time and keeps an eye on the random local differences between itself and its neighbors.

Common Handwaves

If scientists cram times more atoms into an atomic clock, it becomes 10 times more precise—but there is a limit on how many atoms you can squeeze in. Entangled atoms would not be preoccupied with local differences and would instead solely measure the passage of time, effectively bringing them together as a single pendulum.

That means adding times more atoms into an entangled clock would make it times more precise. Entangled clocks could even be linked to form a worldwide network that would measure time independent of location.

Observers will have a tough time hacking into quantum correspondence. A sender uses one key to encode information, and a recipient uses another to decode the message. This can be fixed using potentially unbreakable quantum key distribution QKD.

Magic Ink: Information Software and the Graphical Interface

In QKD, information about the key is sent via photons that have been randomly polarized. This restricts the photon so that it vibrates in only one plane—for example, up and down, or left to right. The recipient can use polarized filters to decipher the key and then use a chosen algorithm to securely encrypt a message.

The secret data still gets sent over normal communication channels, but no one can decode the message unless they have the exact quantum key.


In Switzerland tried out an ID Quantique product to provide a tamper-proof voting system during an election. And the first bank transfer using entangled QKD went ahead in Austria in So far, entangled photons have been transmitted over a maximum distance of about 88 miles.

Closeup of a D-Wave One computer chip.

The concept and uses of quantum mechanics in the world of today and tomorrow

Super-Powerful Computers A standard computer encodes information as a string of binary digits, or bits. Quantum computers supercharge processing power because they use quantum bits, or qubits, which exist in a superposition of states—until they are measured, qubits can be both "1" and "0" at the same time.

This field is still in development, but there have been steps in the right direction. Keeping a sharp eye on entanglement. This type of microscope fires two beams of photons at a substance and measures the interference pattern created by the reflected beams—the pattern changes depending on whether they hit a flat or uneven surface.

Using entangled photons greatly increases the amount of information the microscope can gather, as measuring one entangled photon gives information about its partner.

The Hokkaido team managed to image an engraved "Q" that stood just 17 nanometers above the background with unprecedented sharpness. Similar techniques could be used to improve the resolution of astronomy tools called interferometers, which superimpose different waves of light to better analyze their properties.

Interferometers are used in the hunt for extrasolar planets, to probe nearby stars and to search for ripples in spacetime called gravitational waves. The European robin may be a quantum natural. One leading theory suggests that birds like the European robin use the spooky action to keep on track when they migrate.Table 2, based on the Army's 77 BCT program, shows the changes in terms of Army battalions.

The Army's decision to increase the number of maneuver companies in its modular heavy BCT battalions from three to four makes it necessary to consider the number of combat maneuver companies as well as the number of battalions.

Chris Skinner is best known as an independent commentator on the financial markets through his blog, the, as author of the bestselling book Digital Bank, and Chair of the European networking forum the Financial Services Club. Significant Energy E vents in Earth's and Life's History as of Energy Event.

Timeframe. Significance. Nuclear fusion begins in the Sun. c. billion years ago (“bya”) Provides the power for all of Earth's geophysical, geochemical, and ecological systems, with .

FTL. Faster than light. This is by far the most important item of HANDWAVIUM technology in Space SF, and is absolutely necessary for the communications, TRADE, and WARFARE of the KNOWN one, after all, wants to take decades or centuries to get anywhere.

For this reason, even HARD SF usually makes an exception for FTL. You just can't leave home without it. Quantum mechanics is the body of scientific laws that describe the wacky behavior of photons, electrons and the other particles that make up the universe.

Quantum mechanics is the branch of. The World of Tomorrow loomed large in Hugo Gernsbeck began publication in April of "Amazing Stories," the first pulp magazine devoted exclusively to science fiction (or "scientifiction.

Quantum mechanics - Wikipedia