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What Silicon Carbide Color Centers are
To understand Silicon Carbide Color Centers, the material Silicon Carbide (SiC) must first be introduced. SiC belongs to a group of materials called complementary metal-oxide semiconductor compatible materials (CMOS). These materials are used in a broad range of electronic devices, especially in integrated chips and circuits.

Silicon Carbide Color Centers are point defects in the crystal lattice of SiC, which are known as color centers.

Fabrication of defects in Silicon Carbide Color Centers
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Types of Defects in SiC
There are multiple types of defects in SiC, some of which are listed below:


 * Vsi(-) (TV1-TV3)


 * DV(0)
 * Ky5
 * CAV (Carbon anti-site-vacancy pair)
 * SiC(D1)
 * NCVSi(-)
 * TM Color Centers
 * TI(0)
 * Cr3+
 * V(-), V(0)
 * Mo(0)
 * Er3+

More details are available in the article Silicon carbide color center for quantum applications by Stefania Castelletto and Alberto Boretti.

Applications of Silicon Carbide Color Centers
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Photonics
Point defects in the crystal lattice of Silicon Carbide (SIC), known as color centers, have recently emerged as one of the most promising single-photon emitters for non-classical light sources. (reword)

Semiconductor
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Optically and Electrically Driven Single Photon Sources (SPS)
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Metrology
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Quantum Sensing
When the color centers are first brought to an excited state, a photon can be emitted from the decay from the excited state to the ground states. This photon can then interact with other sources of static and variable magnetic fields. As the result of this, the spin transition frequency and the coherence time is altered, which this effected is used in Quantum Sensing.

Quantum Properties of Silicon Carbide Color Centers
When studied at the single defect level, single emitters could be isolated. As the result of this, Silicon Carbide Color Centers can be used for applications in quantum cryptography protocols.

It is also important to note that quantum entanglement between the electron spin state and the single photon quantum state when two conditions are met:


 * 1) The quantum state of a single photon can be correlated to the electron spin state of the Silicon Carbide Color Centers
 * 2) This correlation is able to be stored in nearby nuclear spins in the Color Centers

This quantum entanglement allows there to be a creation of quantum networks, which leads to quantum communications and quantum memory.

One example of this was a study on nitrogen-vacancy centers in diamond by Romana Schirhagl, Kevin Chang, Michael Loretz, and Christian L. Degen in 2014 that showcased novel results on how in diamonds, the nitrogen-vacancy were color centers, which also are fluorescent impurities that have many applications