This page identifies the person responsible for QuantumExplainer.com, as required by Article 5 of the EU e-Commerce Directive (2000/31/EC) and by Article 5 of the Polish Act on Providing Services by Electronic Means (ustawa o świadczeniu usług drogą elektroniczną). It is the only page on the site that carries a postal address, because it is the page the law asks for it on.
Who publishes this website
Maciej Maczyszyn
Nowotarska 10c
34-500 Zakopane
Poland
The postal address is for legal correspondence. For anything else, email is much faster:
- General enquiries: office@quantumexplainer.com
- Privacy and data protection: privacy@quantumexplainer.com
- Contact form: quantumexplainer.com/contact
QuantumExplainer.com is published by an individual, not by a company. There is no commercial register entry and no VAT identification number, and the publishing activity itself is not subject to a licence or a supervisory authority.
Responsibility for content
The publisher named above is responsible for the editorial content of this website. How that content is researched, drafted, reviewed and corrected is set out in the editorial policy.
The site is educational. It is not investment advice, medical advice or professional advice of any kind; the disclaimer says what that means in practice.
Links to other websites
Articles link to external sources — papers, vendor documentation, company announcements — because a claim you cannot check is not worth much. Those sites are not under our control, and linking to one is not an endorsement of everything else on it. If a link has gone somewhere it should not, tell us and it will be removed.
Copyright
The text, structure and original images on this site are the property of the publisher. You may quote a reasonable extract with attribution and a link to the page. Republishing whole articles, with or without attribution, requires permission — ask through the contact page, and the answer is often yes.
Where an image comes from a third party, the source is credited on the page that uses it.
Complaints and disputes
Nothing is sold through this website, so the consumer dispute resolution rules for online traders do not apply to it. If you have a complaint about the site itself, the contact page reaches a person, and we answer every complaint.
Privacy and cookies
How personal data is handled is described in the privacy policy. Which cookies are set, and how to refuse them, is in the cookie policy for your region, reachable from the consent banner, from the footer, and from the privacy choices page.
Last updated: 24 September 2026.