Scientist

Ignacio Cirac

1965– · Quantum information, Quantum optics, Quantum computing
Spanish theoretical physicist, pioneer of quantum computing and quantum information. Together with Peter Zoller, he developed a scheme for a quantum computer based on trapped ions. He proposed the concepts of quantum repeaters for long-distance quantum communication and methods of quantum simulation. Director of the Max Planck Institute of Quantum Optics.

Biography

He studied at the Complutense University of Madrid. He worked at the University of Castilla-La Mancha, the University of Innsbruck, and since 2001 has headed a department at the Max Planck Institute of Quantum Optics in Garching. Winner of the Wolf Prize (2013), the Prince of Asturias Award (2006), and many others.

Key discoveries

💡 Cirac is known for his modesty: after receiving the Wolf Prize, he said that the main reward is the opportunity to work on what you love. He also actively popularizes science in Spanish-speaking countries.
"He said that quantum mechanics teaches us that information is physical, and we are only beginning to realize the consequences of this."
Concepts
quantum algorithmquantum entanglement
Laws
no-cloning theorem
Scientists
Alain AspectErwin SchrödingerDavid DeutschJohn Stewart BellNiels BohrDavid BohmCharles BennettJohn Clauser

Related articles

Quantum Internet: How Entanglement Became a Data Packet
Quantum computing promises a revolution, but its real power will only unfold in a network. The best “brains” — superconducting qubits — communicate at microwave frequencies. The ideal “couriers” — optical photons — fly at hundreds of terahertz. A direct hookup is impossible.
Quantum Physics2025-10-151 minarXiv:2510.13247express
Quantum Mind? Can't Do Without the Classical
Intelligent action begins with a plan. Just as an architect needs blueprints to evaluate options, any agent with will needs to repeatedly copy data about reality.
Quantum Physics2025-12-031 minarXiv:2512.03659express
Quantum Elections: No One Will Know Your Vote
There's always a risk that someone will peek at your ballot during an election. Physicists have come up with a solution: anonymous voting safeguarded not by people, but by the laws of nature. Their 'magic ballot box' operates with light particles — photons.
Quantum Physics2025-12-091 minarXiv:2512.08429express
Quantum Teleportation: Record Accuracy in Real Time
The idea of quantum teleportation was proposed by Charles Bennett and realized by Anton Zeilinger. It uses entanglement — when two particles are in sync, like two sheets of paper that instantly copy the same drawing. But earlier, the "ink" would blur, ruining the blueprint.
Quantum Physics2026-02-101 minarXiv:2602.09596express
Quantum Internet: From Theory to Reality
Ordinary messages can be intercepted without anyone noticing. Physicists have come up with a way to create a shared secret that instantly breaks if someone so much as glances at it. Instead of paper, they use single particles of light. This quantum communication exploits a rule: any measurement changes a quantum object.
Quantum Physics2026-02-111 minarXiv:2602.10695express
Quantum Copying: Encryption Beats the Ban
A bread recipe written in disappearing ink: while you read, the original fades. That's how qubits behave — any measurement changes them irrevocably. Copying them is forbidden by the 1982 theorem (Вуттерс, Зурек): a qubit contains энтропия — unknown information that can't simply be doubled.
Quantum Physics2026-03-091 minarXiv:2603.08916express
A Message That Cannot Be Copied
In the quantum world, you cannot create a copy of an unknown particle's state – this was established by William Wootters and Wojciech Zurek in 1982, and Charles Bennett turned this prohibition into a data protection tool.