2.4k citations · 6.2k across the 41 of their papers we have counts for
25 papers · 1 filter
Zero-average bias bidirectional single-electron current generation in a hybrid turnstile
Marco Marín-Suárez, Yuri A. Pashkin, Joonas T. Peltonen +1
Hybrid turnstiles have proven to generate accurate single-electron currents. The usual operation consists of applying a periodic modulation to a capacitively coupled gate electrode…
Suppression of back-tunnelling events in hybrid single-electron turnstiles by source-drain bias modulation
Marco Marín-Suárez, Yuri A. Pashkin, Joonas T. Peltonen +1
Accuracy of single-electron currents produced in hybrid turnstiles at high operation frequencies is, among other errors, limited by electrons tunnelling in the wrong direction. Inc…
Optoelectrical nanomechanical resonators made from multilayered 2D materials
Joshoua Condicion Esmenda, Myrron Albert Callera Aguila, Jyh-Yang Wang +8
Studies involving nanomechanical motion have evolved from its detection and understanding of its fundamental aspects to its promising practical utility as an integral component of…
Non-galvanic calibration and operation of a quantum dot thermometer
J. M. A. Chawner, S. Barraud, M. F. Gonzalez-Zalba +4
A cryogenic quantum dot thermometer is calibrated and operated using only a single non-galvanic gate connection. The thermometer is probed with radio-frequency reflectometry and ca…
Detecting the "phonon wind" in superfluid by a nanomechanical resonator
A. M. Guenault, A. Guthrie, R. P. Haley +8
Nanoscale mechanical resonators are widely utilized to provide high sensitivity force detectors. Here we demonstrate that such high quality factor resonators immersed in superfluid…
Driving nanomechanical resonators by phonon flux in superfluid \(\mathbf{^4He}\)
A. M. Guénault, A. Guthrie, R. P. Haley +10
We report on nanomechanical resonators with very high-quality factors operated as mechanical probes in liquid helium \(^4\mathrm{He}\), with special attention to the superfluid reg…
Operating Nanobeams in a Quantum Fluid
D. I. Bradley, R. George, A. M. Guenault +12
Microelectromechanical (MEMS) and nanoelectromechanical systems (NEMS) are ideal candidates for exploring quantum fluids since they can be manufactured reproducibly, cover the freq…
High quality factor mechanical resonance in a silicon nanowire
D. E. Presnov, S. Kafanov, A. A. Dorofeev +4
Resonance properties of nanomechanical resonators based on doubly clamped silicon nanowires, fabricated from silicon-on-insulator and coated with a thin layer of aluminum, were exp…
Interplay of the inverse proximity effect and magnetic field in out-of-equilibrium single-electron devices
Shuji Nakamura, Yuri A. Pashkin, Mathieu Taupin +11
The magnetic field is shown to affect significantly non-equilibrium quasiparticle (QP) distributions under conditions of inverse proximity effect on the remarkable example of a sin…
On-chip magnetic cooling of a nanoelectronic device
D. I. Bradley, A. M. Guénault, D. Gunnarsson +8
We demonstrate significant cooling of electrons in a nanostructure below 10 mK by demagnetisation of thin-film copper on a silicon chip. Our approach overcomes the typical bottlene…
Nanoelectronic thermometers optimised for sub-10 millikelvin operation
J. R. Prance, D. I. Bradley, R. E. George +8
We report the cooling of electrons in nanoelectronic Coulomb blockade thermometers below 4 mK. Above 7 mK the devices are in good thermal contact with the environment, well isolate…
Single-electron current sources: towards a refined definition of ampere
J. P. Pekola, O. -P. Saira, V. F. Maisi +4
Controlling electrons at the level of elementary charge has been demonstrated experimentally already in the 1980's. Ever since, producing an electrical current , or its int…
Real-time observation of discrete Andreev tunneling events
V. F. Maisi, O. -P. Saira, Yu. A. Pashkin +3
We provide a direct proof of two-electron Andreev transitions in a superconductor - normal metal tunnel junction by detecting them in a real-time electron counting experiment. Our…
Detection of mechanical resonance of a single-electron transistor by direct current
Yu. A. Pashkin, T. F. Li, J. P. Pekola +6
We have suspended an Al based single-electron transistor whose island can resonate freely between the source and drain leads forming the clamps. In addition to the regular side gat…
Damping in high-frequency metallic nanomechanical resonators
F. Hoehne, Yu. A. Pashkin, O. Astafiev +4
We have studied damping in polycrystalline Al nanomechanical resonators by measuring the temperature dependence of their resonance frequency and quality factor over a temperature r…
Parallel pumping of electrons
V. F. Maisi, Yu. A. Pashkin, S. Kafanov +2
We present simultaneous operation of ten single-electron turnstiles leading to one order of magnitude increase in current level up to 100 pA. Our analysis of device uniformity and…
Electronic Radio-Frequency Refrigerator
S. Kafanov, A. Kemppinen, Yu. A. Pashkin +3
We demonstrate experimentally that a hybrid single-electron transistor with superconducting leads and a normal-metal island can be refrigerated by an alternating voltage applied to…
Experimental investigation of hybrid single-electron turnstiles with high charging energy
A. Kemppinen, S. Kafanov, Yu. A. Pashkin +3
We present an experimental study of hybrid turnstiles with high charging energies in comparison to the superconducting gap. The device is modeled with the sequential tunneling appr…
Electronic cooling of a submicron-sized metallic beam
J. T. Muhonen, A. O. Niskanen, M. Meschke +5
We demonstrate electronic cooling of a suspended AuPd island using superconductor-insulator-normal metal tunnel junctions. This was achieved by developing a simple fabrication meth…
Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
T. Yamamoto, M. Watanabe, J. Q. You +5
We have designed and experimentally implemented a circuit of inductively-coupled superconducting charge qubits, where a Josephson junction is used as an inductance, and the couplin…
Parity effect in superconducting aluminum single electron transistors with spatial gap profile controlled by film thickness
T. Yamamoto, Y. Nakamura, Yu. A. Pashkin +2
We propose a novel method for suppression of quasiparticle poisoning in Al Coulomb blockade devices. The method is based on creation of a proper energy gap profile along the device…
Quantum noise in the Josephson charge qubit
O. Astafiev, Yu. A. Pashkin, Y. Nakamura +2
We study decoherence of the Josephson charge qubit by measuring energy relaxation and dephasing with help of the single-shot readout. We found that the dominant energy relaxation p…
Single-shot measurement of the Josephson charge qubit
O. Astafiev, Yu. A. Pashkin, T. Yamamoto +2
We demonstrate single-shot readout of quantum states of the Josephson charge qubit. The quantum bits are transformed into and stored as classical bits (charge quanta) in a dynamic…
Demonstration of conditional gate operation using superconducting charge qubits
T. Yamamoto, Yu. A. Pashkin, O. Astafiev +2
Since the first demonstration of coherent control of a quantum state of a superconducting charge qubit a variety of Josephson-junction-based qubits have been implemented with remar…