Distinguishing between statistical and systematic errors in quantum process tomography

التفاصيل البيبلوغرافية
العنوان:	Distinguishing between statistical and systematic errors in quantum process tomography
المؤلفون:	Sabine Wölk, Theeraphot Sriarunothai, Gouri S Giri, Christof Wunderlich
المصدر:	New Journal of Physics, Vol 21, Iss 1, p 013015 (2019)
بيانات النشر:	IOP Publishing
سنة النشر:	2019
المجموعة:	Directory of Open Access Journals: DOAJ Articles
مصطلحات موضوعية:	quantum process tomography, hypothesis test, open quantum system, Science, Physics, QC1-999
الوصف:	It is generally assumed that every process in quantum physics can be described mathematically by a completely positive map. However, experimentally reconstructed processes are not necessarily completely positive due to statistical or systematic errors. In this paper, we introduce a test for discriminating statistical from systematic errors which is necessary to interpret experimentally reconstructed, non-completely positive maps. We demonstrate the significance of the test using several examples given by experiments and simulations. In particular, we demonstrate experimentally how an initial correlation between the system to be measured and its environment leads to an experimentally reconstructed map with negative eigenvalues. These experiments are carried out using atomic ^171 Yb ^+ ions confined in a linear Paul trap, addressed and coherently manipulated by radio frequency radiation.
نوع الوثيقة:	article in journal/newspaper
اللغة:	English
تدمد:	1367-2630
Relation:	https://doi.org/10.1088/1367-2630/aaf5f2; https://doaj.org/toc/1367-2630; https://doaj.org/article/25a5d89394954d94835129e54533cb67
DOI:	10.1088/1367-2630/aaf5f2
الاتاحة:	https://doi.org/10.1088/1367-2630/aaf5f2 https://doaj.org/article/25a5d89394954d94835129e54533cb67
رقم الانضمام:	edsbas.AC837719
قاعدة البيانات:	BASE

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الوصف
تدمد:	13672630
DOI:	10.1088/1367-2630/aaf5f2