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Quantum Everything

In Focus

Quantum Everything

Harvard scientists are advancing cutting-edge technologies that harness the properties of quantum physics to improve computers, medicine, and a whole universe of other possibilities.

Quantum physics explained
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What is quantum physics?

Students and faculty from across Harvard explain the basics of quantum physics and why it’s so important.

Learn more about quantum physics from short student videos

Quantum leaps of the near future


Three researchers working on a quantum computer

More powerful computers

Quantum computers have the potential to revolutionize our understanding of the world around us. The technology could enable the rapid design and development of life-saving drugs, clean energy, and optimized commerce.

Harvard scientists are working on detecting and removing errors in quantum computers, improving the accuracy of the calculations quantum computers perform, and utilizing light to carry quantum information.

Learn more about the future of quantum computing

Mikhail Lukin and Can Knaut next to a quantum computer

Faster, safer internet

Harvard scientists established the practical makings of the first quantum internet by entangling two quantum memory nodes separated by an optical fiber link. This work, combined with electro-optic modulators and photon routers, points the way to a next-generation quantum internet capable of sending highly complex, hacker-proof information around the world at ultra-fast speeds.

Learn more about the future of the internet

A person logging into their locked phone

Stronger cybersecurity

As quantum computers become more powerful, they threaten to undermine current cryptographic defenses. Quantum-resistant cybersecurity is possible, but it still needs time to be developed and tested.

Learn more about the future of cybersecurity

Entangled in quantum physics

Harvard students, faculty, and researchers—including the Harvard Quantum Computing Club—are exploring the possibilities of quantum technologies.


Studying quantum sources of light
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Aaron Day

As a Ph.D. student in applied physics, Aaron’s work revolves around studying spin defects—quantum sources of light—and how they could someday be used within a quantum internet.

Learn more about Aaron’s work

The ripples of quantum waves

Research into quantum physics and the technology that it makes possible has a far reaching impact.


Researchers looking in at an array with wires and lasers

The coldest experiment ever

Harvard researchers cooled a Fermi-Hubbard system made of neutral atoms down a hundred billion times below room temperature, colder than ever before, creating what Greiner calls “the most pristine artificial quantum system ever.” In so doing, the researchers have made it possible to simulate materials in ways that normal computers can’t.

The coldest experiment ever

A new phase of matter using a quantum processor

The chamber of a quantum processor
A new phase of matter using a quantum processor

The ethical and legal implications of quantum technologies in medicine

A quantum computer
The ethical and legal implications of quantum technologies in medicine

Using quantum properties to measure the smallest things

Two researchers working at a blackboard
Using quantum properties to measure the smallest things

International cooperation and regulation around quantum computing

A quantum computer with equations written behind it
International cooperation and regulation around quantum computing

How quantum computing will transform the design of data centers

A data center with plants growing
How quantum computing will transform the design of data centers

The unexpected kinship between quantum physics and theology

An illustrated view of the constellations
The unexpected kinship between quantum physics and theology

Our corner of the quantum universe

Harvard has created a vibrant quantum research community across our campus, from high school mentorship programs and student clubs to first-of-their-kind degree programs.