Famous double-slit experiment holds up when stripped to its quantum essentials

CaptionSchematic of the MIT experiment: Two single atoms floating in a vacuum chamber are illuminated by a laser beam and act as the two slits. The interference of the scattered light is recorded with a highly sensitive camera depicted as a screen. Incoherent light appears as background and implies that the photon has acted as a particle passing only through one slit.   Credits:Credit: Courtesy of the researchers

MIT physicists have performed an idealized version of one of the most famous experiments in quantum physics. Their findings demonstrate, with atomic-level precision, the dual yet evasive nature of light. They also happen to confirm that Albert Einstein was wrong about this particular quantum scenario.

The experiment in question is the double-slit experiment, which was first performed in 1801 by the British scholar Thomas Young to show how light behaves as a wave. Today, with the formulation of quantum mechanics, the double-slit experiment is now known for its surprisingly simple demonstration of a head-scratching reality: that light exists as both a particle and a wave. Stranger still, this duality cannot be simultaneously observed. Seeing light in the form of particles instantly obscures its wave-like nature, and vice versa.

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Physicists Catch Light in 'Imaginary Time' in Scientific First

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For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time'.

When you shine light through almost any transparent material, the gridlock of electromagnetic fields that make up the atomic alleys and side streets will add a significant amount of time to each photon's commute.

This delay can tell physicists a lot about how light scatters, revealing details about the matrix of material the photons must navigate. Yet until now, one trick up the theorist's sleeve for measuring light's journey – invoking imaginary time – has not been fully understood in practical terms.

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Scientists Turn Light Into a Never-Before-Seen Solid With Reality-Bending Quantum Properties

In a groundbreaking scientific achievement, researchers have managed to transform light into a super solid material, marking a revolutionary step in understanding states of matter. This pioneering development merges the characteristics of solid and superfluid states, unlocking new pathways for studying quantum mechanics and presenting vast implications for technological advancements. 

As we delve deeper into this extraordinary discovery, it becomes clear that the transformation of light into a super solid is more than just a scientific curiosity; it represents a paradigm shift in how we understand and manipulate the fundamental properties of matter.

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Light Travels in Both Time and Space

A groundbreaking achievement by physicists from Imperial College London has brought new insights into quantum physics by recreating the famous double-slit experiment in the dimension of time. 

Led by Professor Riccardo Sapienza from the Department of Physics, this research team explored how light interacts with a material whose optical properties can change within a few femtoseconds, revealing more about the fundamental nature of light.

The original double-slit experiment, first performed in 1801 by Thomas Young, showed that light behaves as a wave. Later experiments demonstrated that light also behaves as particles, revealing its quantum nature. 

In this classic experiment, light was passed through two physical slits, creating an interference pattern that displayed light’s wave properties. This experiment became crucial in understanding not just light but also the quantum behavior of particles like electrons and atoms.     READ MORE...

Trillion Frames Per Second Camera

A new camera developed at MIT can photograph a trillion frames per second.

Compare that with a traditional movie camera which takes a mere 24. This new advancement in photographic technology has given scientists the ability to photograph the movement of the fastest thing in the Universe, light.

The actual event occurred in a nano second, but the camera has the ability to slow it down to twenty seconds.

For some perspective, according to New York Times writer, John Markoff, "If a bullet were tracked in the same fashion moving through the same fluid, the resulting movie would last three years."  READ MORE...