# Category Archives: Quantum physics

## Quantum Thermodynamics I: Foundations and concepts

Both thermodynamics and quantum mechanics are very important theories, but they are applicable to very different kinds of systems. Thermodynamics describes macroscopic systems where the number of particles is huge (around Avogadro’s number: 6.022×1023). On the other hand, […]

## Entangled through a wormhole

A lot of ink has been wasted in the last decades discussing whether string theory is a good description of nature or merely a mathematica construct with no connection at all with reality. However, the answer to this question actually […]

## The Oxford Questions on the foundations of quantum mechanics

Quantum mechanics and relativity constitute the two main revolutions in physics on the twentieth century. Furthermore, the counterintuitive character of quantum mechanics yields to a rich branch of different possible interpretations, and there are still many open questions. Not solving, […]

## Quantum mechanics in biological systems (II): Gecko´s adhesion

The gecko, a climber´s hero, a lizard able to get a grip even face down on the smoothest ceiling or on the most vertical slippery surfaces. That, the adherence is one of the most striking features in most of the […]

## Massive quantum entanglement

Entanglement is a fundamental tool in quantum computing and several quantum information protocols, such as quantum teleportation, quantum cryptography and quantum key distribution. The basic unit of entanglement is the entangled bit (ebit), represented by a maximally entangled […]

## Quantum mechanics in biological systems (I): Introduction

Quantum mechanics, a term continously repeated during the last twenty years, related with everything, only deeply known and understood by a few, is therefore covered in a mystic and magic halo. Halo profited by some to trick people using any […]

## Is D-Wave a Quantum Computer?

Quantum computing is one of the most interesting fields of study nowadays, both from theoretical and pragmatic point of views. A universal quantum computer can potentially solve certain problems, as factorizing numbers, much faster and with fewer resources than a […]

## Solid state physics could teach us how to quantize gravity: Horava’s theory

One of hottest topics in theoretical physics today is, of course, quantum gravity. The fact that, almost a hundred years after the born of the quantum theory, we still not have a functional theory that describes gravity at a microscopic […]

## Satellite based quantum cryptography

Cryptography is, beyond any doubt, an important technology. Keeping the privacy of communications has many applications in modern societies. For instance, being able to send a message, as your credit card number, with the confidence that no one will understand […]

## Closer to quantum Internet

Quantum computers are one of the most promising technologies under development, and all their promises are completely justified. Quantum systems are extremely expensive to compute, where “expensiveness” can be measured either by the memory or the computational time required in […]