TRICE QFT · TRapped Ion Coherent Execution of Quantum Fourier Transform
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2015-04-01 → 2017-05-15
- Финансиране от ЕС
- 171 461 €
- Участници
- 1
- Схема
- MSCA-IF-EF-ST
Линиите свързват координатора с партньорите.
Накратко на български
Затворените йони се изследват с цел подобряване на точността при изпълнение на квантови алгоритми, като например квантовото преобразуване на Фурие. Това помага за намаляване на грешките от шума и магнитните полета, за да се създадат по-надеждни и мащабни квантови компютри.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
TRapped Ion Coherent Execution of Quantum Fourier Transform
The overall scientific objective of the TRICE QFT project is to develop key ingredients necessary to realize an ion trap based large-scale quantum computer, for which it is imperative to have superior control over the efficiency and reliability of already available quantum operations. Despite certain advantages over other physical systems, qubits based on trapped atomic ion systems are susceptible to decoherence, which describes the phase randomization of a quantum superposition state. This unwanted and uncontrolled mechanism poses a serious obstacle in the realization of conditional quantum logic gates (e.g. CNOT), which are essential constituents of arbitrary quantum algorithms. The fidelity of such gates are reduced dramatically if the time required for the gate operation is significantly longer compared to the coherence time of the physical system that is capable of realizing such gates. While current experiments in the project are performed using a small quantum processor based on a linear string of up to three trapped ions, a longer string with a larger number of ions will be explored towards realization of a large-scale quantum computer. Therefore, as a key prerequisite for the technically challenging future experiments, the basic stability and reliability of the current experiments is required to be enhanced by a careful investigation of the systematic error sources. Noise sources that contribute towards systematic errors are mainly associated with the preparation and detection of states, conditional qubit rotation and decoherence owing to magnetic field fluctuation. The project aims at identification and elimination of these noise sources in order to enhance the fidelity of realizable quantum algorithms, such as a quantum Fourier transform, in the existing experimental setup. A critical aspect of the project, especially for experiments with large number of qubits, is to explore all possible ways to combat decoherence effects, thereby increasing the coherence time available for conditional quantum dynamics, and thus, leading to an improvement in the fidelity of conditional quantum logic operations.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Quantum computers hold the promise to efficiently solve certain computational problems that would be intractable using conventional computers. The latter are not able to efficiently incorporate quantum phenomena arising with superposition of states or entanglement. In order to realize a large-scale quantum computer, it is imperative to have superior control over the efficiency and reliability of already available quantum operations. Trapped ions, being a scalable quantum system, envisage the experimental realization of a large-scale universal quantum computer. The proposed project will demonstrate a novel route to implement a Quantum Fourier Transform (QFT), a crucial component of many quantum algorithms, in a small-scale quantum information processor based on a string of singly charged ytterbium ions confined in a linear Paul trap. In presence of a magnetic field gradient-induced coupling, simultaneous interaction between all pairs of qubits will be exploited for efficient execution of quantum algorithms. Thus, instead of decomposing a given quantum algorithm into its smallest possible elementary constituents (1- and 2-qubit gates), multi-qubit conditional quantum dynamics will be used to implement a QFT. Experiment and theory will collaborate at all stages to streamline the project. New collaborations will be established allowing to combine the tremendous knowledge and expertise already existing in the field. The breakthroughs envisioned in the project are, to explore and implement simultaneous couplings between N ≥ 4 qubits allowing for efficient execution of quantum algorithms, and to implement a Quantum Fourier Transform with N ≥ 4 qubits pointing into the future capability of realizing a large number factorization using a quantum factoring algorithm. In addition, career development plans are proposed to assist the fellow acquire new skills enabling a high level of professional maturity and independence to lead a successful career in academia.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITAET SIEGEN · SiegenКоординаторГермания
Връзки
Данни: CORDIS, © Европейски съюз