Science communicators, highly recommend Orbit!
What's necessary to understand quantum mechanics is to break away from conventional thinking!
A guide to the fundamental concepts of quantum physics to help you navigate the bizarre world of quantum physics!

The 2025 Nobel Prize in Physics will be awarded to John Clarke, Michel Deboret, and John Martinis.
Their achievement was the 'discovery of macroscopic quantum mechanical phenomena', that is, the proof that various quantum mechanical phenomena can be observed in the macroscopic world.
This has made it easier to develop more advanced technologies that utilize the principles of quantum mechanics (quantum physics), such as quantum computers and quantum cryptography.
All the science in this world is fascinating, but quantum mechanics, whose field expands every year and new discoveries and developments are made, feels mysterious and strange, as if it were not of this world.
And it's even difficult.

This book is a basic conceptual guide to understanding quantum mechanics (quantum physics), a strange, beautiful, and difficult subject to understand the more you try to understand it.
However, this does not mean that there are formulas full of incomprehensible symbols or lengthy theoretical explanations.
This book helps you break away from conventional thinking to easily understand quantum mechanics.
Florian Aigner, author of "Why We Can't Walk Through Walls," is a science critic who writes extensively to popularize science. This time, he explains quantum theory, the most fascinating scientific theory ever devised by mankind, using various metaphors and descriptions.
You will be able to experience quantum mechanics from a new perspective that has never been seen before!

“A quantum landscape where familiar reality expands into infinite possibilities,
Entering into that splendid chaos, we come face to face with the deep essence of the world!”
- YouTube [Science That Won't Work] host, Orbit

"Particles moving left and right at the same time are against our common sense! So what this means is that quantum theory is truly strange and absolutely incomprehensible to our human understanding! No one will ever truly understand quantum physics!" But in reality, this statement is meaningless, doesn't explain anything, and doesn't help anyone.
It just creates an unexplained tension and doesn't provide any useful knowledge.
… (omitted)… There are rules in the universe that we can believe in.
Whether you are a human or an atom, a cat or a laser beam, everything follows the laws of nature.
This law also applies to the world of particles.
We have to accept that the rules of quantum theory work a little differently than the rules of our everyday lives.
And that's exactly what we're trying to do here.
We go beyond our familiar everyday experiences to delve into the strange rules of quantum theory, one step at a time, and try to better understand why they're not so strange.
--- "Chapter 1: Waves, Particles, and Quantum Flicker"

The wave-like properties of quantum particles are different.
Measurement inevitably affects the object of measurement.
Anyone who finds this confusing can rest assured.
Even Albert Einstein didn't want to believe it.
Measurement results that depend on whether or not one is observed seemed impossible to him.
So Einstein also believed for a very long time that if we could just create a more sophisticated measurement system, we could clearly observe the actual path of the particle through the double slit, and that this would not affect the experiment.
But Einstein was wrong.
--- "Chapter 2: Only When No One Measures"

In a sense, the former could be said to be closer to the cherry flavor than the cherry itself.
In some parts of the room where there are cherries, the cherry scent is strong and full, while in other parts, the cherry scent is faint.
I'm sure that 100 meters away from a cherry, you can no longer smell anything resembling a cherry.
But this comparison alone does not fully capture the essence.
Even though the cherry scent spreads like a cloud throughout the room, its source is clear and localized.
It's cherry.
And the source always has an exact location.
The former is different.
There is no spatially distributed origin of 'electromagnetism'.
There is only spatially distributed electrons themselves.
There are places where electrons are somewhat more abundant than others.
And this distributed electron is called an electron.
We can no longer answer this question.
There is no answer to the question, “Where are the particles actually located?”
Just as there are no answers to questions like, “What color is the number 4?” or “If all zebras were liquid, how much would Sunday weigh?”
--- "Chapter 4: A New Kind of Coincidence"

Aren't atoms also made mostly of empty space? While most of the atomic mass resides in the nucleus, it only occupies a tiny fraction of the total volume.
Surrounding it is an electron field, billions of times larger in size.
There is a striking analogy to this size ratio.
If the nucleus were the size of a cherry, the entire atom would be the size of a football field, with electrons orbiting somewhere in the stands outside the football field.
But if humans are made of such empty atoms, why can't we simply pass through each other like the two galaxies mentioned earlier? Why does it hurt when we try to break through a wall into the next room? And why can't we just sit in the seat already occupied on a crowded train?
--- "Chapter 7: Why Can't We Pass Through Walls?"

Teleportation had no real scientific basis at the time.
But it's an interesting example of a science fiction technology that has gained some real scientific basis over time.
Teleportation is now a reality.
Not quite like the Enterprise from Star Trek, but at least in the form of quantum teleportation of individual particles.
But we need to be honest about what this means.
Quantum teleportation is not some science fiction technology that involves converting matter into pure light and then converting it back into matter particles at another location.
In 'quantum teleportation', what is transferred from one location to another is information.
The state of one particle is transferred to another particle.
Therefore, in quantum teleportation, it can be said that only the properties of the particle are transferred, not the particle itself.

--- "Chapter 9 Teleportation and Anti-Eavesdropping Code"