Quantum technology has promising potential to revolutionize how large and complex amounts of information are processed. While already in use primarily in laboratory and research settings globally, quantum technologies are in a transition phase for broader industry applications across many economic sectors.
In researching fundamental aspects of quantum physics, or the behavior of nature at the smallest scales—involving atoms, electrons and photons—a study led by Cal Poly Physics Department Lecturer Ian Powell analyzed how a changing magnetic field can make matter behave in unusual ways.
Powell and student researcher Louis Buchalter, who graduated with a Cal Poly bachelor’s degree in physics in 2025, published the article “Flux-Switching Floquet Engineering” in the journal Physical Review B, highlighting how changing magnetic fields over time can create quantum states that do not exist in any stationary material (remaining in the same state as time elapses).
A new sound-based laser could measure gravity with unprecedented precision and reshape navigation technology.
Since their introduction in the 1960s, lasers have fueled major advances in science and everyday technology, from supermarket scanners to eye surgery. Traditional lasers operate by controlling photons, which are particles of light. Over the past two decades, researchers have expanded this concept to other particles, including phonons, which represent tiny units of vibration or sound. Learning to control phonons could unlock new capabilities, including access to unusual quantum effects such as entanglement.
A new quantum-inspired algorithm is reshaping how scientists approach some of the most complex materials known, enabling rapid analysis of structures that were previously beyond computational reach.
A new study links the universe’s expansion to quantum topology, suggesting that hidden mathematical structures may stabilize the cosmological constant in ways previously unrecognized.
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CHAPTERS 0:00 Why Universe is inside an Atom 1:29 What is an atom? 4:44 Louis de Broglie finds waves! 6:28 Electromagnetic force explained 7:24-Sponsor InVideo 8:35 Strong Force explained, color charges! 12:33 Weak Force explained 14:58 Why is Weak Force called a \.
Researchers at the National Institutes for Quantum Science and Technology (QST), Japan, and The University of Tokyo, Japan, in collaboration with Kyushu University, Japan, have developed a new class of biocompatible molecular quantum nanosensors (MoQNs) that operate inside living cells.
The study demonstrates that these nanosensors enable absolute temperature measurements with subcellular spatial resolution and detect radical-related spin signals in both the cytoplasm and nucleus of living cancer cells. The study was published in the journal Science Advances.
What if the most basic assumptions about reality, that objects are separate, and distance is real… are completely wrong? For centuries, classical physics described a predictable, local universe where nothing influenced anything faster than light. Then, quantum entanglement arrived, breaking our entire assumption of reality and terrifying even the most brilliant minds, including Albert Einstein.
00:00 Quantum Entanglement Theory That Breaks Reality. 01:32 The Theory of Quantum Entanglement. 10:58 The Collapse of Local Realism. 20:44 Why Reality Doesn’t Look Quantum. 23:35 The Psychological Consequence of a Nonlocal Reality.
Aperture explores the ideas shaping how we think — philosophy, psychology. and the hidden forces behind human behavior. New perspectives, every week.
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The Delayed Choice Quantum Eraser explained simply provides a shocking answer to whether the future affects the past. Could it be possible that that the future can influence the present? An enhanced version of the famous double slit experiment, called the delayed choice quantum eraser implies exactly that mind blowing scenario – that future events can influence past results.
What exactly is a delayed choice quantum eraser, and how can it possibly show that the future is affecting the past? In 1978, a physicist by the name of John Archibald Wheeler proposed a thought experiment, called delayed choice. Wheeler’s idea was to imagine light from a distant quasar being gravitationally lensed by a closer galaxy. Wheeler noted that this light could be observed on earth in two different ways. This is called a delayed choice because the observer’s choice of selecting how to measure the particle is being done billions of years from the time that the particle left the quasar.
But how could this be?…the light began its journey billions of years ago, long before we decided on which experiment to perform. It would seem as if the quasar light “knew” whether it would be seen as a particle or wave billions of years before the experiment was even devised on earth. Does this prove that somehow the particle’s measurement of its current state has influenced its state in the past? The act of measurement gives reality to the quantum particle. So in the delayed-choice experiment, this means the quantum doesn’t become “real” until you measure it. So this experiment does not prove that the present has influenced the past because the light could have been a wave and particle at the same time, and only become real when it was measured.
However, another more recent experiment set up used a more complicated method to determine this idea of the future influencing a past. It introduced something called the quantum eraser to the delayed choice. So it is called the Delayed Choice Quantum Eraser designed by Kim, Kulik, Shih and Scully in 1999.
It is a complicated construction that introduced entangled pairs of photons to Wheeler’s delayed choice experiment.
I am going to show you a much simpler set up that will illustrate this concept in easier-to-understand terms. The results of this experiment are pretty amazing — because Here’s what happens. It tells us that when the which way information is known, that is, when the detector can ascertain which slit the photon came from, it always presents as a particle. But when the detector cannot ascertain which slit the photon came from, that is, when the which way information is erased, then the photon acts like a wave.
