Entanglement-enhanced quantum rectification

Poulsen, Kasper; Santos, Alan C.; Kristensen, Lasse Bjørn; Zinner, N. T.

doi:10.1103/physreva.105.052605

Cited by 14 publications

(2 citation statements)

References 65 publications

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“…In figure (7) we show the currents I LR (main panel) and I U D (inset) as function of dot energy ε d at temperatures below (T = 0.01) and above (T = 0.5) the Kondo temperature. The dot energy can be easily changed by gate voltage.…”

Section: Gate Voltage Dependence and The Effect Of Interactionsmentioning

confidence: 99%

“…Besides molecules including those with negative U centers [5], many systems with tuned quantum properties have been proposed as possible rectifiers. These include inter alia recently analysed two terminal junctions with bath particles obeying different particle exchange statistics [6] and the use of quantum entanglement as a possible tools to enhance rectification properties [7]. Also various novel solid state systems and materials have been put forward.…”

Section: Introductionmentioning

confidence: 99%

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Four terminal quantum dot as an efficient rectifier of heat and charge currents

Wysokiński¹

2023

Preprint

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We propose an efficient method of heat rectification in a simple system consisting of a quantum dot asymmetrically coupled to four mutually perpendicular electrodes. In such a device the Hall-like charge and heat currents appear in response to the voltage bias or temperature difference between one pair of electrodes. Even though both longitudinal (along the bias) and Hall-like (perpendicular to the bias) currents are rectified under appropriate conditions, the rectification factor is typically much bigger for the latter currents. This is true for heat and charge flow. The Hall-like currents are predicted to exist in linear as well as non-linear transport regimes and require broken mirror symmetry but not time reversal symmetry. The linear effect exists only in geometry which breaks two inversion symmetries along two pairs of electrically coupled terminals. The proposed system is attainable within current technology and provides novel platform of simultaneous heat and charge management at the nanoscale.

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Section: Gate Voltage Dependence and The Effect Of Interactionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Four terminal quantum dot as an efficient rectifier of heat and charge currents

Wysokiński¹

2023

Preprint

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Quantum heat valve and entanglement in superconducting LC resonators

Liu,

Yang,

et al. 2023

Applied Physics Letters

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Quantum superconducting circuit with flexible coupler has been a powerful platform for designing quantum thermal machines. In this Letter, we employ the tunable coupling of two superconducting resonators to realize a heat valve by modulating magnetic flux using a superconducting quantum interference device. It is shown that a heat valve can be realized in a wide parameter range. We find a consistent relation between the heat current and quantum entanglement, which indicates the dominant role of entanglement on the heat valve. It provides an insightful understanding of quantum features in quantum heat machines.

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Heat-based circuits using quantum rectification

Poulsen,

Zinner

2024

Phys. Rev. A

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Entanglement-enhanced quantum rectification

Cited by 14 publications

References 65 publications

Four terminal quantum dot as an efficient rectifier of heat and charge currents

Four terminal quantum dot as an efficient rectifier of heat and charge currents

Quantum heat valve and entanglement in superconducting LC resonators

Heat-based circuits using quantum rectification

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