236 citations · 933 across the 42 of their papers we have counts for
24 papers · 1 filter
Comparison of Lindblad and circuit approaches for quantum heat transport
Bayan Karimi
We compare two popular models applicable to analyzing heat transport by thermal microwave photons in quantum circuits. The first model is derived from a weak-coupling Lindblad mast…
Heat Conduction and Energy Relaxation in an InAs Nanowire Approaching the Clean One-Dimensional Limit
Subhomoy Haldar, Diego Subero, Mukesh Kumar +5
We investigate heat conduction and energy relaxation in an InAs semiconductor nanowire using a hybrid semiconductor-superconductor architecture. Local electronic temperatures are m…
Heat measurement of quantum interference
Christoforus Dimas Satrya, Aleksandr S. Strelnikov, Luca Magazzù +5
Coherence is a key property of quantum systems, and it plays a central role in the operation and performance of quantum heat engines and refrigerators. Despite its importance for t…
Quantum-Ready Microwave Detection with Scalable Graphene Bolometers in the Strong Localization Regime
Yu-Cheng Chang, Federico Chianese, Naveen Shetty +8
Exploiting quantum interference of charge carriers, epitaxial graphene grown on silicon carbide emerges as a game-changing platform for ultra-sensitive bolometric sensing, featurin…
Bolometric detection of Josephson radiation
Bayan Karimi, Gorm Ole Steffensen, Andrew P. Higginbotham +3
A Josephson junction (JJ) has been under intensive study ever since 1960's. Yet even in the present era of building quantum information processing devices based on many JJs, open q…
Optimized proximity thermometer for ultrasensitive detection: Role of an ohmic electromagnetic environment
Danilo Nikolić, Bayan Karimi, Diego Subero Rengel +2
We propose a mesoscopic thermometer for ultrasensitive detection based on the proximity effect in superconductor-normal metal (SN) heterostructures. The device is based on the zero…
Bolometric detection of Josephson inductance in a highly resistive environment
Diego Subero, Olivier Maillet, Dmitry S. Golubev +8
The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagn…
Ultimate accuracy of frequency to power conversion by single-electron injection
Jukka P. Pekola, Marco Marín-Suárez, Tuomas Pyhäranta +1
We analyze theoretically the properties of the recently introduced and experimentally demonstrated converter of frequency to power. The system is composed of a hybrid single-electr…
Calorimetry of a Quantum Phase Slip
E. Gümüş, D. Majidi, D. Nikolić +8
In a Josephson junction, which is the central element in superconducting quantum technology, irreversibility arises from abrupt slips of the gauge-invariant quantum phase differenc…
Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry
Jukka P. Pekola, Eemil Praks, Nikolai Yurttagul +1
We investigate temperature errors of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The errors are proportional to the junct…
Radio frequency Coulomb blockade thermometry
Florian Blanchet, Yu-Cheng Chang, Bayan Karimi +2
We present a scheme and demonstrate measurements of a Coulomb blockade thermometer (CBT) in a microwave transmission setup. The sensor is embedded in an resonator, where …
Colloquium: Quantum heat transport in condensed matter systems
Jukka P. Pekola, Bayan Karimi
In this Colloquium recent advances in the field of quantum heat transport are reviewed. This topic has been investigated theoretically for several decades, but only during the past…
Down-conversion of quantum fluctuations of photonic heat current in a circuit
Bayan Karimi, Jukka P. Pekola
We discuss the non-zero frequency noise of heat current with the explicit example of energy carried by thermal photons in a circuit. Instead of the standard circuit modelling that…
Electron-phonon coupling of epigraphene at millikelvin temperatures
Bayan Karimi, Hans He, Yu-Cheng Chang +7
We investigate the basic charge and heat transport properties of charge neutral epigraphene at sub-kelvin temperatures, demonstrating nearly logarithmic dependence of electrical co…
Spatial and energy resolution of electronic states by shot noise
E. S. Tikhonov, A. O. Denisov, S. U. Piatrusha +5
Shot noise measurements are widely used for the characterization of nonequilibrium configurations in electronic conductors. The recently introduced quantum tomography approach was…
Optimized proximity thermometer for ultra-sensitive detection
Bayan Karimi, Danilo Nikolic, Tuomas Tuukkanen +3
We present a set of experiments to optimize the performance of the noninvasive thermometer based on proximity superconductivity. Current through a standard tunnel junction between…
Heat rectification via a superconducting artificial atom
Jorden Senior, Azat Gubaydullin, Bayan Karimi +3
In miniaturising electrical devices down to nanoscales, heat transfer has turned into a serious obstacle but also potential resource for future developments, both for conventional…
Observing temperature fluctuations of a mesoscopic electron system
Bayan Karimi, Fredrik Brange, Peter Samuelsson +1
Almost a century ago, Johnson and Nyquist presented evidence of fluctuating electrical current and the governing fluctuation dissipation theorem (FDT). Whether, likewise, temperatu…
Non-invasive thermometer based on proximity superconductor for ultra-sensitive calorimetry
Bayan Karimi, Jukka P. Pekola
We present radio-frequency thermometry based on a tunnel junction between a superconductor and proximitized normal metal. It allows operation in a wide range of biasing conditions.…
Nanoscale Quantum Calorimetry with Electronic Temperature Fluctuations
F. Brange, P. Samuelsson, B. Karimi +1
Motivated by the recent development of fast and ultra-sensitive thermometry in nanoscale systems, we investigate quantum calorimetric detection of individual heat pulses in the sub…
Tunable photonic heat transport in a quantum heat valve
Alberto Ronzani, Bayan Karimi, Jorden Senior +4
Quantum thermodynamics is emerging both as a topic of fundamental research and as means to understand and potentially improve the performance of quantum devices. A prominent platfo…
Quantum noise of electron-phonon heat current
Jukka P. Pekola, Bayan Karimi
We analyze heat current fluctuations between electrons and phonons in a metal. In equilibrium we recover the standard result consistent with the fluctuation-dissipation theorem. He…
Coupled qubits as a quantum heat switch
B. Karimi, J. P. Pekola, M. Campisi +1
We present a quantum heat switch based on coupled superconducting qubits, connected to two resonators that are terminated by resistors providing two heat baths. To describe th…
Otto refrigerator based on a superconducting qubit: classical and quantum performance
B. Karimi, J. P. Pekola
We analyse a quantum Otto refrigerator based on a superconducting qubit coupled to two LC-resonators each including a resistor acting as a reservoir. We find various operation regi…