Feng Lab Quantum Communications Photon (IMAGE) University of Pennsylvania Caption With only two levels of superposition, the qubits used in today’s quantum communication technologies have limited storage space and low tolerance for interference. The Feng Lab’s hyperdimensional microlaser (above) generates qudits, photons with four simultaneous levels of information. The increase in dimension makes for robust quantum communication technology better suited for real-world applications. Credit Haoqi Zhao Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.