Długopolski, Jacek
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Item type:Article, Access status: Open Access , A physical model of quantum bit behavior based on a programmable FPGA integrated circuit(Wydawnictwa AGH, 2024) Długopolski, Jacek; Sadowski, Marcin; Suleja, WawrzyniecThe rapidly developing field of quantum computing and the ongoing lack of widely available quantum computers create the need for scientists to build their simulators. However, mathematical simulation of such circuits usually ignores many aspects and problems found in real quantum systems. In this article, the authors describe a quantum bit emulator based on FPGA integrated circuits. In this case, FPGA technology provides real-time massive parallelism of the modeled physical phenomena. The modeled QUBIT is represented using a Bloch sphere. Its quantum state is set and modified only by precise pulses of an electrical signal, and with the help of similar pulses, it manifests its current state in real time. The constructed QUBIT was additionally equipped with decoherence mechanisms and with circuits that intentionally respond to internal and external noises that distort its current quantum state. This article presents and discusses how such a physically built emulator works.Item type:Article, Access status: Open Access , FPGA-based multi-core processor(Wydawnictwa AGH, 2013) Wójcik, Wojciech; Długopolski, JacekThe paper presents the results of investigations concerning the possibility of using programm able logic devices (FPGA) to build virtual multi-core processors dedicated specifically towards particular applications.The paper shows the designed architecture of a multi-core processor specialized to perform a particular task, and it discusses its computational efficiency depending on the number of cores used. An evaluation of the results is also discussed.Item type:Article, Access status: Open Access , Wykorzystanie łącza 12C oraz informacji lokalizacyjnej do personalizacji działania urządzeń(Wydawnictwa AGH, 2000) Długopolski, JacekThe article refers to the part of the hardware and software research which concerns the problem of personalization of a common used device operation. The proposed solution is based on the ABS system (Active Badge System) developed by ORL (Olivetti research Laboratories) in the United Kingdom, which delivers localization and identification information, and the universal communication interface I2C (Inter Integrated Circuit) developed by PHILIPS. The two above mentioned elements were used to create both the system of the automatic video signal flow control and the system to identify a TV program being currently viewed.