Coherent manipulation of thermal transport by tunable electron-photon and electron-phonon interaction

Paolucci, Federico; Timossi, Giuliano; Solinas, Paolo; Giazotto, Francesco

doi:10.1063/1.4990286

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…These theoretical curves have been obtained by assuming an inductive coupling with a mutual inductance of 500 pH for different values of T hot at T bath = 10 mK and show remarkably large modulations up to 200 mK for T hot = 700 mK and T 2 = 170 mK. Similar results can be obtained via a capacitive coupling, which turns out to be even more efficient and accessible from the fabrication point of view [30,64].…”

Section: Photonic Heat Transistorssupporting

confidence: 68%

“…In this context, another interesting proposal is an Al DC SQUID with a non-negligible inductance L. For significant values of L, the temperature interference pattern generated by the SQUID should exhibit a remarkable hysteresis, that could be used to obtain a thermal memory device [71,72]. Furthermore, caloritronic superconducting circuits might be combined with hybrid platforms based on, e.g., semiconducting nanowires [73,74], graphene [64,75,76], ferromagnets or ferromagnetic insulators (FI) [77][78][79][80], topological insulators [81][82][83][84][85] or low dimensional electronic devices to enhance their functionalities. For instance, Ref.…”

Section: Applications and Future Directionsmentioning

confidence: 99%

“…In all the panels we assumed T hot > T 1 > T 2 > T bath . below 1 K) [3,63], it is possible to consider the structure as a lumped series of equivalent circuits [30,63,64]. It has been shown that this circuital approach is equivalent to the analysis employing nonequilibrium Green's functions [29].…”

Section: Photonic Heat Transistorsmentioning

confidence: 99%

“…One step beyond this experiment is based on the concept of a fully contactless photonic heat transistor [29,30,64], schematically represented in Fig. 5c.…”

Section: Photonic Heat Transistorsmentioning

confidence: 99%

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Towards phase-coherent caloritronics in superconducting circuits

2017

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The emerging field of phase-coherent caloritronics (from the Latin word "calor", i.e., heat) is based on the possibility to control heat currents using the phase difference of the superconducting order parameter. The goal is to design and implement thermal devices able to master energy transfer with a degree of accuracy approaching the one reached for charge transport by contemporary electronic components. This can be obtained by exploiting the macroscopic quantum coherence intrinsic to superconducting condensates, which manifests itself through the Josephson and the proximity effect. Here, we review recent experimental results obtained in the realization of heat interferometers and thermal rectifiers, and discuss a few proposals for exotic non-linear phase-coherent caloritronic devices, such as thermal transistors, solid-state memories, phase-coherent heat splitters, microwave refrigerators, thermal engines and heat valves. Besides being very attractive from the fundamental physics point of view, these systems are expected to have a vast impact on many cryogenic microcircuits requiring energy management, and possibly lay the first stone for the foundation of electronic thermal logic.In the last decades, the impressive evolution of modern electronics has reached a point where quantum effects and phase coherence are ordinarily exploited to study exotic phenomena at the nanoscale under controlled and adjustable conditions. Only very recently, instead, scientists have started to exploit the great potentialities offered by nanotechnology for the investigation and control of heat currents (the branch of science called "caloritronics"). Interesting advances in the understanding of fundamental properties of thermal transport have been obtained in experiments involving atomic or molecular junctions [1]. A few works [2][3][4] have shown that heat flow has a quantum limit -just as the electric current -and that this limit does not depend on the nature of heat carriers. Furthermore, a remarkable amount of theoretical and experimental studies has been focused on the interaction between heat and spin currents in thermoelectric devices [5].From the point of view of applications, the largest effort has been put into electronic and phononic thermometry or refrigeration [6][7][8], but the most intriguing and ambitious goal has always been the full control of heat currents, aiming to emulate the accuracy regularly obtained for charge transport in modern electronic devices. This attracting possibility was first envisioned by a conspicuous amount of theoretical works designing non-linear phononic devices [9]. However, the practical realization of these structures still appears challenging, hampering significant improvements of the first promising results [10,11]. An appealing alternative is represented by the notable ingredient of phase coherence, whose role in thermal transport was almost unknown until ten years ago, with just the exceptions of Refs. 12-14. This gap was filled by the birth of phase-coherent caloritronics [3,15,16]...

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Section: Photonic Heat Transistorssupporting

confidence: 68%

Section: Applications and Future Directionsmentioning

confidence: 99%

Section: Photonic Heat Transistorsmentioning

confidence: 99%

“…One step beyond this experiment is based on the concept of a fully contactless photonic heat transistor [29,30,64], schematically represented in Fig. 5c.…”

Section: Photonic Heat Transistorsmentioning

confidence: 99%

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Towards phase-coherent caloritronics in superconducting circuits

2017

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“…where the parameters are [65,67,69,[81][82][83][84]] the sound speed s ≈ 2 × 10 4 m/s, the mass density ρ M ≈ 7.6 × 10 −7 kg/m 2 , the deformation potential D p ≈ 13 eV, l mfp ≈ 60 nm and the Riemann Zeta…”

Section: B Sigis Thermal Modelmentioning

confidence: 99%

Electron cooling with graphene-insulator-superconductor tunnel junctions and applications to fast bolometry

Vischi,

Carrega,

Braggio

et al. 2019

Preprint

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Electronic cooling in hybrid normal metal-insulator-superconductor junctions is a promising technology for the manipulation of thermal loads in solid state nanosystems. One of the main bottlenecks for efficient electronic cooling is the electron-phonon coupling, as it represents a thermal leakage channel to the phonon bath. Graphene is a two-dimensional material that exhibits a weaker electronphonon coupling with respect to standard metals. For this reason, we study the electron cooling in graphene-based systems consisting of a graphene sheet contacted by two insulator/superconductor junctions. We show that, by properly biasing the graphene, its electronic temperature can reach base values lower than those achieved in similar systems based on metallic ultra thin films. Moreover, the lower electron-phonon coupling is mirrored in a lower heat power pumped into the superconducting leads, thus avoiding their overheating and preserving the cooling mechanisms. Finally, we analyze the possible application of cooled graphene as a bolometric radiation sensor. We study its main figures of merit, i.e. responsivity, noise equivalent power and response time. In particular, we show that the built-in electron refrigeration allows to reach a responsivity of the order of 50 nA/pW and a noise equivalent power of order of 10 −18 W Hz −1/2 while the response speed is about 10 ns corresponding to a thermal bandwidth in the order of 100 MHz.

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Highly efficient phase-tunable photonic thermal diode

Marchegiani

Braggio

Giazotto

2021

Applied Physics Letters

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We investigate the photon-mediated thermal transport between a superconducting electrode and a normal metal. When the quasiparticle contribution can be neglected, the photon-mediated channel becomes an efficient heat transport relaxation process for the superconductor at low temperatures, being larger than the intrinsic contribution due to the electron–phonon interaction. Furthermore, the superconductor–normal metal system acts as a nearly perfect thermal diode, with a rectification factor up to 108 for a realistic aluminum superconductor. The rectification factor can also be tuned in a phase-controlled fashion through a non-galvanic coupling, realized by changing the magnetic flux piercing a superconducting quantum interference device, which modifies the coupling impedance between the superconductor and the normal metal. The scheme can be exploited for passive cooling in superconducting quantum circuits by transferring heat toward normal metallic pads where it dissipates more efficiently or for more general thermal management purposes.

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Coherent manipulation of thermal transport by tunable electron-photon and electron-phonon interaction

Cited by 6 publications

References 28 publications

Towards phase-coherent caloritronics in superconducting circuits

Towards phase-coherent caloritronics in superconducting circuits

Electron cooling with graphene-insulator-superconductor tunnel junctions and applications to fast bolometry

Highly efficient phase-tunable photonic thermal diode

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