Single-particle emission at finite temperatures

Abstract

The state of particles injected onto the surface of the Fermi sea depends essentially on the temperature. The pure state injected at zero temperature becomes a mixed state if injected at finite temperature. Moreover the electron source injecting a single-particle state at zero temperature may excite a multi-particle state if the Fermi sea is at finite temperature. Here I unveil a symmetry of the scattering amplitude of a source, which is sufficient to preserve a single-particle emission regime at finite temperatures if such a regime is achieved at zero temperature. I give an example and analyze the effect of temperature on time-dependent electrical and heat currents carried by a single-particle excitation.

15 pages, 2 figures

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Cited by in corpus (12)

• Quantum tomography of electrical currents
• Minimal-excitation single-particle emitters: A comparison of charge and energy transport properties
• Levitons in helical liquids with Rashba spin-orbit coupling probed by a superconducting contact
• Single-particle shot noise at non-zero temperature
• Composite two-particle sources
• High-temperature fusion of a multi-electron leviton
• Multi-particle interference in an electronic Mach-Zehnder interferometer
• Single-electron $G^{(2)}$ function at nonzero temperatures
• Interaction effects and charge quantization in single-particle quantum dot emitters
• Zero-bias current induced by periodic drive of any shape
• Quantum transport phenomena induced by time-dependent fields
• Auto- versus cross-correlation noise