Researchers have designed a new device that can efficiently create multiple frequency-entangled photons, a feat that cannot be achieved with today's optical devices. The new approach could open a path to more powerful quantum communication and computing technologies.

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Phys.org

Researchers developed a quantum-dot device called FrEnGATE that can efficiently generate multiple frequency-entangled photons, overcoming limitations of current optical devices. The device uses a quantum dot in a waveguide as a mediator to correlate photon frequencies, achieving 15% success probability per attempt. Operating at telecom wavelengths (1550nm), it enables scalable multi-photon entanglement compatible with existing fiber infrastructure, potentially advancing quantum communication networks and computing systems with enhanced security and information capacity.

Quantum-dot device can generate multiple frequency-entangled photons