Caltech Undergraduate Research Journal

CURJ is Caltech's award-winning undergraduate research journal, dedicated to highlighting the accomplishments of the numerous undergraduates conducting research at Caltech during the SURF program and throughout the academic year.

Featured Article

Measurement-based quantum computing using polarization-path qubits

Gabriel J. Mendoza and Jeremy O'Brien

An image for the article on display.

The holy grail of quantum information science may be the construction of a scalable quantum computer, a computer that utilizes quantum mechanical phenomena to solve problems. In principle, quantum computers can efficiently solve certain problems that would currently take the fastest PCs longer than the age of the universe to solve. However, quantum computers are notoriously difficult to build; they operate using tiny quantum particles, qubits, which are very fragile. Unwanted disturbances from the environment, or noise, easily destroy these qubits, making it difficult to stitch many of them together. In this article we explore how special properties of photons can be used to increase the number of qubits in a quantum computer without increasing the noise level.