Quantum optics is a field of quantum physics that deals specifically with the interaction of photons with matter.As the property of the light involved in these devices became more important, quantum optics began being used as the term for this specialized field of study.Light emitted from these devices are in a coherent state, which means the light closely resembles a classical sinusoidal wave but in this coherent state, the quantum mechanical wave function is distributed equally.This is a field of research that uses quantum-mechanical and semi-classical physics to investigate phenomena involving light and their interactions with matter at submicroscopic levels.
We know that the light particles and the photons don’t interact with each other but if two photons collide in a vaccum, they simply interact with each other.By an experimental technology that promises large speedups on some types of calculations. The efficient way to make photons interact with new prospects for both classical optics and with qauntum computing. Recently researchers describe a new technique for enabling photon-photon interactions at room temperature, by using a silicon crystal with distinctive patterns etched into it.Generally physicists have enabled photon-photon interactions by using atoms of very rare elements that is cooled to very low temperatures.
Generally a quantum computer maintains the sequence of qubits, a pair of qubits can be in any quantum superposition of four states, a single qubit can represent a one or a zero or any quantum superposition of two qubit states and the three qubits in any superposition of eight states. The most experimental qubits use ions trapped in oscillating magnetic fields superconducting circuits and the defects in the crystal structure of diamonds with all these technologies , superpositions are very difficult to maintain.And the quantum state of one of the photons can be thought of as controlling the quantum state of the other. When a light wave passes close to a dielectric, electric field will slightly displace the electrons of the dielectric’s atoms.
Although the device can be configured so that the dramatic shift in resonance frequency occurs only if the photons attempting to enter and it have particular quantum properties.Basically the size and spacing of the holes in the device are tailored to a specific light frequency and that device is generally known ” RESONANCE FREQUENCY “.Generally it works at room temperature, it’s compatible with semiconductor manufacturing and it’s solid state. The specific combinations of polarization or phase, and the basic requirement for a quantum gate.