30 citations · 91 across the 9 of their papers we have counts for
9 papers
Methods to achieve near-millisecond energy relaxation and dephasing times for a superconducting transmon qubit
Mikko Tuokkola, Yoshiki Sunada, Heidi Kivijärvi +6
Superconducting qubits are one of the most promising physical systems for implementing quantum computers. However, executing quantum algorithms of practical computational advantage…
Quantum degeneracy in mesoscopic matter: Casimir effect and Bose-Einstein condensation
I. Todoshchenko, M. Kamada, J. -P. Kaikkonen +5
The ground-state phonon pressure is an analogue to the famous Casimir pressure of vacuum produced by zero-point photons. The acoustic Casimir forces are, however, many orders of ma…
Qubit-compatible substrates with superconducting through-silicon vias
K. Grigoras, N. Yurttagül, J. -P. Kaikkonen +21
We fabricate and characterize superconducting through-silicon vias and electrodes suitable for superconducting quantum processors. We measure internal quality factors of a million…
Topologically protected mobile solid He on carbon nanotube
Igor Todoshchenko, Masahiro Kamada, Jukka-Pekka Kaikkonen +7
Low dimensional fermionic quantum systems are exceptionally interesting because they reveal distinctive physical phenomena, including among others, topologically protected excitati…
Graphene resonator as an ultrasound detector for generalized Love waves in a polymer film with two level states
Antti Laitinen, Jukka-Pekka Kaikkonen, Thanniyil S. Abhilash +6
We have investigated surface shear waves at 22 MHz in a 0.5-micron-thick polymer film on SiO2/Si substrate at low temperatures using suspended and non-suspended graphene as detecto…
Quartz tuning fork as a probe of surface waves
Igor Todoshchenko, Alexander Savin, Miika Haataja +2
Quartz tuning forks are high-quality mechanical oscillators widely used in low temperature physics as viscometers, thermometers and pressure sensors. We demonstrate that a fork pla…
A blueprint for a simultaneous test of quantum mechanics and general relativity in a space-based quantum optics experiment
Sam Pallister, Simon Coop, Valerio Formichella +12
In this paper we propose an experiment designed to observe a general-relativistic effect on single photon interference. The experiment consists of a folded Mach-Zehnder interferome…
Buckled Diamond-like Carbon Nanomechanical Resonators
Matti Tomi, Andreas Isacsson, Mika Oksanen +5
We have developed capacitively-transduced nanomechanical resonators using sp-rich diamond-like carbon (DLC) thin films as conducting membranes. The electrically conducting DLC…
Dry demagnetization cryostat for sub-millikelvin helium experiments: refrigeration and thermometry
I. Todoshchenko, J. -P. Kaikkonen, R. Blaauwgeers +2
We demonstrate successful "dry" refrigeration of quantum fluids down to \,mK by using copper nuclear demagnetization stage that is pre-cooled by a pulse-tube-based dilution…