Pertti J Hakonen
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Explore the profile of Pertti J Hakonen including associated specialties, affiliations and a list of published articles.
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13
Citations
70
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Recent Articles
1.
Nieminen T, Lahteenmaki P, Tan Z, Cox D, Hakonen P
Rev Sci Instrum
. 2016 Dec;
87(11):114706.
PMID: 27910622
We present a microwave correlation measurement system based on two low-cost USB-connected software defined radio dongles modified to operate as coherent receivers by using a common local oscillator. Existing software...
2.
Lahteenmaki P, Paraoanu G, Hassel J, Hakonen P
Nat Commun
. 2016 Aug;
7:12548.
PMID: 27562246
The existence of vacuum fluctuations is one of the most important predictions of modern quantum field theory. In the vacuum state, fluctuations occurring at different frequencies are uncorrelated. However, if...
3.
Tomi M, Isacsson A, Oksanen M, Lyashenko D, Kaikkonen J, Tervakangas S, et al.
Nanoscale
. 2015 Aug;
7(35):14747-51.
PMID: 26284626
We have developed capacitively-transduced nanomechanical resonators using sp(2)-rich diamond-like carbon (DLC) thin films as conducting membranes. The electrically conducting DLC films were grown by physical vapor deposition at a temperature...
4.
Laitinen A, Oksanen M, Fay A, Cox D, Tomi M, Virtanen P, et al.
Nano Lett
. 2014 May;
14(6):3009-13.
PMID: 24842236
Using electrical transport experiments and shot noise thermometry, we find strong evidence that "supercollision" scattering processes by flexural modes are the dominant electron-phonon energy transfer mechanism in high-quality, suspended graphene...
5.
6.
Li J, Paraoanu G, Cicak K, Altomare F, Park J, Simmonds R, et al.
Sci Rep
. 2012 Sep;
2:645.
PMID: 22966420
Routers, switches, and repeaters are essential components of modern information-processing systems. Similar devices will be needed in future superconducting quantum computers. In this work we investigate experimentally the time evolution...
7.
Massel F, Cho S, Pirkkalainen J, Hakonen P, Heikkila T, Sillanpaa M
Nat Commun
. 2012 Aug;
3:987.
PMID: 22871806
The coupling of distinct systems underlies nearly all physical phenomena. A basic instance is that of interacting harmonic oscillators, giving rise to, for example, the phonon eigenmodes in a lattice....
8.
Song X, Oksanen M, Sillanpaa M, Craighead H, Parpia J, Hakonen P
Nano Lett
. 2011 Dec;
12(1):198-202.
PMID: 22141577
We present a simple micromanipulation technique to transfer suspended graphene flakes onto any substrate and to assemble them with small localized gates into mechanical resonators. The mechanical motion of the...
9.
Lechner L, Gaass M, Paila A, Sillanpaa M, Strunk C, Hakonen P
Nanotechnology
. 2011 Feb;
22(12):125203.
PMID: 21317499
A scheme for measuring small intrinsic critical currents I(c) in nanoscale devices is described. Changes in Josephson inductance L(J) are converted to frequency variations that are recorded via microwave reflection...
10.
Sulkko J, Sillanpaa M, Hakkinen P, Lechner L, Helle M, Fefferman A, et al.
Nano Lett
. 2010 Nov;
10(12):4884-9.
PMID: 21053964
The detection of mechanical vibrations near the quantum limit is a formidable challenge since the displacement becomes vanishingly small when the number of phonon quanta tends toward zero. An interesting...