My Blog

This is a space where I share my thoughts on numerous topics, press articles and interviews, and delve into some of the more complicated and frequently asked scientific questions.

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Physics Does Not Need Observers

Nothing in physics requires observers. This belief creates artificial problems like quantum measurement paradoxes. Physical systems are sufficient “observers” – entanglement does the work traditionally attributed to observation.

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Higgledy-Piggledy

John Wheeler, one of the legends of modern physics, used to say that “everything comes from higgledy-piggledy”. This was his usual reply to the question “Why quantum?”, to which no one has so far found an answer. Why is Nature fundamentally quantum mechanical, especially when it seems that there are so many other things that it could have been and so many different ways the laws of Nature could have come out to be?

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As quantum mechanics turns 100, a new revolution is under way

One hundred years ago on a quiet, rocky island, German physicist Werner Heisenberg helped set in motion a series of scientific developments that would touch nearly all of physics. There, Heisenberg developed the framework of quantum mechanics. At the time, quantum theory was just a loose collection of ideas about the quirks of physics on the scale of atoms.

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purple bubbles on liquid

The bold attempt to solve the toughest mystery at the heart of physics

Physics is tough. Want to spot a ripple in space-time? You just need a detector capable of seeing a length change less than one-millionth the size of an atom. Want to find a Higgs boson? No problem – so long as you have $7 billion, 14 years and 6000 scientists to hand. Still, one experiment is so hard as to make even the cheeriest physicist gulp: testing the idea that gravity is quantum.

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It’s Only the Sound of a Rainbow (But I Like It)

A Zen koan is a statement (such as “what’s the sound of one hand clapping?”) meant to lead to a complete cessation of thinking. The whole point of Zen is to get us to be at one with the universe (“all is one and one is all”).

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Only the soul gets teleported

One of the inventors of quantum teleportation, the late Israeli physicist Asher Peres, was once asked by a journalist if a human being was to be quantum teleported, “Would the whole being be teleported with the soul or only the body?” His witty reply was: “No, only the soul gets teleported!”

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