De or het kwantumelektronica?

The correct Dutch article is:

de kwantumelektronica

Rule Words ending in -ica: usually de. See the rule
Meaning (Dutch) (natuurkunde, elektronica) deel van de fysica, betreffende de lasers en masers

How to use kwantumelektronica

the kwantumelektronicade kwantumelektronica
this kwantumelektronicadeze kwantumelektronica
that kwantumelektronicadie kwantumelektronica
our kwantumelektronicaonze kwantumelektronica
your kwantumelektronicajouw kwantumelektronica
every kwantumelektronicaelke kwantumelektronica
which kwantumelektronica?welke kwantumelektronica?
a big kwantumelektronica / the big kwantumelektronicaeen grote kwantumelektronica, de grote kwantumelektronica

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).