How do scientists explain quantum entanglement? In the video below, Caltech faculty members take a stab at explaining entanglement.

One of the fundamental principles of quantum mechanics, superposition explains how a quantum state can be represented as the sum of two or more states.

Entanglement: This is a phenomenon that occurs when two or more objects are connected in such a way that they can be thought of as a single system, even if they are very far apart. The state of one …

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And that's what we do in particle physics. We're zooming in on smaller and smaller structures, smaller and smaller scales. What is quantum gravity? KZ: What we've been doing over the last hundred …

What causes earthquakes? The tectonic plates that make up the earth's crust are moving constantly. As the edges of these plates slide against each other in fault zones, friction can slow them down, …

New technologies that use properties of quantum mechanics have the potential to change how we think about encryption and computer cryptography in two main ways.

The human immune system has evolved to remember the pathogens, such as viruses and bacteria, it has fought off in the past. Through this immunological memory, the immune system can often …

For more than a century, Caltech has marshaled the resources of research and education to fuel knowledge and innovation that benefit humanity. We believe that science lends essential perspective …

You might not be able to see that particle, but it might have been deposited inside the house on flat surfaces, on windowsills, on the floor. And we went back to the lab and we measured the …