Purdue Researchers Advance Light-Based Quantum Computer Chips

At a glance

Purdue University engineers have developed ways to solve key problems in building large-scale quantum chips that use photons, or particles of light, as qubits. Photons can move at the speed of light and stay stable at room temperature.

Key points

1. 1

   Photons can move data faster than electronic circuits and need less energy than other qubits that require extremely cold temperatures.

2. 2

   Current chips can handle only a small number of qubits, while practical calculations would need hundreds or thousands.

3. 3

   The team developed a method that emits exactly one photon at room temperature from many spots on a silicon nitride platform each time a laser fires.

4. 4

   The industry's existing method produces single photons inconsistently and with low efficiency, so this approach offers a more reliable source.

Why it matters

Quantum computers can only solve real problems if qubits can be scaled up reliably, and this study tackles one of the key hurdles at that starting point.