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quantum cryptography

Stephanie Wehner in a red suit standing in a glass-paneled corridor at Delft University of Technology in the Netherlands. Her reflection appears in the glass to the right and left.
Q&A

To Invent a Quantum Internet

September 25, 2019

Fifty years after the current internet was born, the physicist and computer scientist Stephanie Wehner is planning and designing the next internet — a quantum one.

Photo of Urmila Mahadev
quantum computing

Graduate Student Solves Quantum Verification Problem

October 8, 2018

Urmila Mahadev spent eight years in graduate school solving one of the most basic questions in quantum computation: How do you know whether a quantum computer has done anything quantum at all?

Computer Science

A New Design for Cryptography’s Black Box

September 2, 2015

A recent cryptographic breakthrough has proven difficult to put into practice. But new advances show how near-perfect computer security might be surprisingly close at hand.