2011 – PICO http://ltl.tkk.fi/PICO/wordpress Sat, 10 Jul 2021 19:25:43 +0000 en-GB hourly 1 https://wordpress.org/?v=4.9.18 http://ltl.tkk.fi/PICO/wordpress/wp-content/uploads/penguin-smooth.png 2011 – PICO http://ltl.tkk.fi/PICO/wordpress 32 32 Quantum Technology Finland awards Bayan Karimi http://ltl.tkk.fi/PICO/wordpress/?p=3474 Fri, 21 Aug 2020 09:43:35 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=3474 Read more]]> PhD student wins prize for her groundbreaking research achievements.
This year the Quantum Technology Finland Centre of Excellence (QTF) annual discovery prize is being awarded to Bayan Karimi. She was first author on this year’s Nature Communications paper “Reaching the ultimate energy resolution of a quantum detector” (https://dx.doi.org/10.1038/s41467-019-14247-2). In the work, Bayan as part of the PICO group in the Department of Applied Physics, developed a nanocalorimeter with record sensitivity. The device aims to measure energy differences in qubits at the sensitivity limits imposed by nature.

The €1,000 prize is awarded by the QTF for the best discovery made by one of its members in the last year. The judging panel consisted of Mikko Merimaa (VTT), Elisabetta Paladino (University of Catania), Martti Kauranen (Tampere University). The judges praised the paper for successfully tackling fundamental questions in quantum calorimetry and opening up new experimental directions fo the field. They also specifically praised Karimi for her role as main author of the work.

‘We have a bigger goal in mind,’ says Karimi. ‘It’s great to have developed this detector, but now that we have it, the real research actually begins!’ The team in the PICO group are aiming to do experimental work to get data to help the wider research community make more advances in quantum thermodynamics. ‘This detector is a beautiful testbed for quantum thermodynamics. We’re now looking to answer many long-standing questions. The dream would be to detect single microwave photons from superconducting qubits.’

Karimi says that part of the key of her work were the facilities and infrastructure at Aalto, particularly that the cleanroom and equipment at OtaNano have been really valuable. ‘This prize is a recognition to all our research group PICO and coauthors, and I want to thank especially my supervisor Prof. Jukka Pekola for his support and continuous collaboration.’

Karimi works in QTF and Marie Curie training network QuESTech. The work for the Nature Communications paper was funded through Academy of Finland, the European Union’s Horizon 2020 research and innovation program under the European Research Council program and Marie Sklodowska-Curie actions.

https://www.aalto.fi/en/news/quantum-technology-finland-awards-bayan-karimi

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Simon Memorial Prize 2020 to Prof. Jukka Pekola http://ltl.tkk.fi/PICO/wordpress/?p=3468 Fri, 21 Aug 2020 09:30:23 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=3468 For fundamental achievements in quantum thermodynamics, metrology and cryogenics based on nanoscale electronic devices.
https://www.iop.org/physics-community/special-interest-groups/low-temperature-group/simon-memorial-prize

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2020 http://ltl.tkk.fi/PICO/wordpress/?p=3403 Wed, 22 Jan 2020 16:09:16 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=3403 Realization of Maxwell demon (video) http://ltl.tkk.fi/PICO/wordpress/?p=1928 Mon, 09 Feb 2015 13:12:47 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=1928 Read more]]> The video about the successful collaboration of PICO group members, namely, Jonne Koski, Ville Maisi, and Prof. Jukka Pekola with Prof. Dmitri Averin (Stony Brook University) and Prof. Takahiro Sagawa (Tokyo University) in realization of Maxwell Demon has been published on YouTube.
Please see video below:

For more information please see the underlain papers:

  • Jonne V. Koski, Ville F. Maisi, Takahiro Sagawa, Jukka P. Pekola
    Experimental study of mutual information in a Maxwell Demon
    arXiv:1405.1272, Physical Review Letters 113, 030601.
  • Jonne V. Koski, Ville F. Maisi, Jukka P. Pekola, Dmitri V. Averin
    Experimental realization of a Szilard engine with a single electron
    arXiv:1402.5907, PNAS 111, 13786.
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    Best Physics Doctoral Dissertation of 2014 Award http://ltl.tkk.fi/PICO/wordpress/?p=1851 Fri, 19 Dec 2014 13:00:28 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=1851 Read more]]> Best Doctoral Physics Dissertation Awards 2014

    PhD Ville Maisi from the O.V. Lounasmaa Laboratory was awarded for the best physics doctoral dissertation in 2014 by the Aalto School of Science (SCI). The award was acknowledged for the first time for three outstanding doctoral dissertations in physics in Aalto University on 18 December, 2014.
    Ville Maisi currently works at the ETH Zurich. Others awarded were PhD Patrick Grahn and PhD Miikka Heikkinen who defended their dissertation in the Department of Applied Physics.
    Please see more detailed information here.

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    Doctoral Dissertation Awards 2013 at Aalto SCI http://ltl.tkk.fi/PICO/wordpress/?p=1529 Sat, 01 Feb 2014 16:43:02 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=1529 Read more]]> Doctoral Dissertation Awards 2013 at Aalto SCI

    PhD Olli-Pentti Saira from the O.V: Lounasmaa Laboratory was awarded for the best doctoral dissertation in 2013 by the Aalto School of Science (SCI). The award is presented in the annual get together of the Doctoral Programme of SCI on 18 March, 2014. Saira currently works at the Kavli Institute of Nanoscience Delft. Others awarded were PhD Mari Ijäs who defended her dissertation in the Department of Applied Physics and PhD Jefrey Lijffit from the Department of Information and Computer Science. For preliminary information on the annual get together, please see in Inside

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    The information is taken from http://physics.aalto.fi/blog/2014/01/28/doctoral-dissertation-awards-2013-at-aalto-sci/

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    Entropy Production in a Single-Electron Box published in Nature Physics http://ltl.tkk.fi/PICO/wordpress/?p=1384 Tue, 02 Jul 2013 13:22:06 +0000 http://ltl.tkk.fi/PICO/wordpress/?p=1384 Read more]]> Our paper entitled “Distribution of Entropy Production in a Single-Electron Box” has been published as a Letter in Nature Physics.

    Congratulations to Jonne Koski and co-authors!

    Here is the paper abstract:

    Recently, the fundamental laws of thermodynamics have been reconsidered for small systems. The discovery of the fluctuation relations has spurred theoretical and experimental studies. The concept of entropy production has been extended to the microscopic level by considering stochastic trajectories of a system coupled to a heat bath. However, this has not been studied experimentally if there are multiple thermal baths present. Here, we measure, with high precision, the distributions of microscopic entropy production in a single-electron box consisting of two islands with a tunnel junction. The islands are coupled to separate heat baths at different temperatures, maintaining a steady thermal non-equilibrium. We demonstrate that stochastic entropy production from trajectories of electronic transitions is related to thermodynamic entropy production from dissipated heat in the respective thermal baths. We verify experimentally that the fluctuation relations for both definitions are satisfied. Our results reveal the subtlety of
    irreversible entropy production in non-equilibrium.

    Read a synopsis here.

    Read the full text here.

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