Two interesting recent news related to quantum photonics:
Quantum Photonics article tells that Researchers from Nanjing University, Beijing Institute of Aerospace Control Devices, and Southeast University, Nanjing, in China have demonstrated the creation of entangled photons and their manipulation on a single chip. The researchers used lithium niobate (LN) as the material for the chip. LN is a material with a highly nonlinear response to light. LN is also widely used material in cellphones and modulators in telecommunications. Because of these optical properties it allows the integration of a number of quantum devices, and it is becoming the material of choice for the fabrication of photonic chips. The group reported this research last week in Physical Review Letters.
Scientists Create Solid Light article tells that electrical engineers at Princeton University have created solid-light. In Physical Review X, the researchers reveal that they have locked individual photons together so that they become like a solid object. “This is a new behavior for light.” The researchers constructed what they call an “artificial atom” made of 100 billion atoms engineered to act like a single unit. In one of the almost incomprehensible behaviors unique to the quantum world, the atom and the photons became entangled so that properties passed between the “atom” and the photons in the wire. The photons started to behave like atoms, correlating with each other to produce a single oscillating system. As some of the photons leaked, the system started producing quantum divergent behavior.