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芬蘭阿爾托大學(xué)2024年招聘博士后(量子納米力學(xué))

時間:2024-09-13來源:中國博士人才網(wǎng) 作者:佚名

芬蘭阿爾托大學(xué)2024年招聘博士后(量子納米力學(xué))

阿爾托大學(xué)(Aalto University,簡稱:Aalto)位于芬蘭首都赫爾辛基,是一所古老而創(chuàng)新力強的北歐著名高等學(xué)府,為北歐五校聯(lián)盟成員之一。阿爾托大學(xué)校名是為表彰和紀念在科技、經(jīng)濟及藝術(shù)領(lǐng)域作出重大貢獻的芬蘭籍世界著名建筑大師阿爾瓦·阿爾托,F(xiàn)任校長為世界杰出計算機與人工智能領(lǐng)域?qū)<襂lkka Niemelä教授。

Postdoctoral Researchers in Quantum Nanomechanics

Employer

Aalto University

Location

Espoo, Helsinki (FI)

Salary

The salary ranges from 4020 歐元 to 4420 歐元 per month (gross amount)

Closing date

31 Oct 2024

The Quantum Nanomechanics group at the Department of Applied Physics is looking for outstanding

Postdoctoral Researchers

to carry out experimental research on different projects related to quantum micromechanical systems. In our team, we investigate how mechanical oscillators can be utilized for fundamental research probing quantum mechanics in massive systems, or for usage in quantum information processing. The measurements are carried out at deep cryogenic temperatures in a dilution refrigerator. In our research, we have demonstrated quantum entanglement between two micromechanical oscillators realized as vibrating aluminum drumheads [Nature 556, 478 (2018), Science 372, 625 (2021)].

Project 1: Gravitational coupling between nonclassical masses

In this project, the goal is to touch a hundred-year-old mystery of physics: Despite its success at describing phenomena in the low-energy limit, quantum mechanics is incompatible with general relativity that describes gravity and huge energies. The interface between these two has remained experimentally elusive, because only the most violent events in the universe have been considered to produce measurable effects due to the plausible quantum behavior of gravity. We aim at detecting gravitational forces for the first time within a quantum system. We use mechanical oscillators loaded by milligram masses and bring two such gravitationally interacting oscillators into nonclassical motional states. Initially, we will measure the gravitational force between gold particles weighing a milligram, representing a new mass scale showing gravitational forces within a system. This work is part of the ERC Advanced Grant project “GUANTUM: Probing the limits of quantum mechanics and gravity with micromechanical oscillators”.

Project 2: Strong coupling in coherent electromechanics

We realize “microwave optomechanical” devices, where micromechanical membrane oscillators interact with on-chip microwave cavity resonators. Optomechanical techniques allow for both preparing, measuring and manipulation of the mechanical quantum states. Thus far, the preparation of the most interesting quantum states has been limited by small coupling of the vibrations to electromagnetic fields. In this project, the main emphasis is to increase the coupling by creating a nanometer-size vacuum gap connection to the vibrating membrane via nanopositioning. Additionally, the membranes will be realized with a phononic crystal radiation shield, enabling ultrahigh mechanical quality factors. These advancements will facilitate fundamental studies on remote entanglement and teleportation of mechanical quantum states. This work is part of European Union’s Quantera Program project “MQSens: Quantum Sensing with Nonclassical Mechanical Oscillators”, where opto-/electromechanics is utilized to explore how quantum protocols can be adapted to mechanical sensors in the quantum regime for various applications.

Your role

The experimental work in both projects involves design of the samples and of the measurement setups, cleanroom fabrication, running microwave measurements in dilution refrigerators, and data analysis. You are expected to participate in instructing PhD students.

Your experience and ambitions

For this challenging research, we are looking for brilliant and energetic individuals who are motivated in experimental, low-temperature quantum physics. We require the candidates to have a proven track record in experimental research with similar or related topics, cleanroom microfabrication, and strong interest in micromechanical systems. Additionally, the candidates should be excellent team players. Experience with cryogenics and dilution refrigerators, and skill in theoretical understanding of the studied phenomena, are considered significant assets.

We require the candidates to have excellent skills in English. Finnish language is not required. To be eligible, a postdoctoral researcher must hold a PhD degree in a suitable field.

To apply for the position, please submit your application including the attachments mentioned below as one single PDF document in English through our online recruitment system by using the link on Aalto University’s web page ("Apply Now”).

Letter of motivation

CV including list of publications

Degree certificates and academic transcripts

Contact details of at least two referees

The deadline for applications is October 31, 2024.

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