Artigo Revisado por pares

Primary Electronic Thermometry Using the Shot Noise of a Tunnel Junction

2003; American Association for the Advancement of Science; Volume: 300; Issue: 5627 Linguagem: Inglês

10.1126/science.1084647

ISSN

1095-9203

Autores

Lafe Spietz, K. W. Lehnert, Irfan Siddiqi, R. J. Schoelkopf,

Tópico(s)

Advanced Electrical Measurement Techniques

Resumo

We present a thermometer based on the electrical noise from a tunnel junction. In this thermometer, temperature is related to the voltage across the junction by a relative noise measurement with only the use of the electron charge, Boltzmann's constant, and assumption that electrons in a metal obey Fermi-Dirac statistics. We demonstrate proof-of-concept operation of this primary thermometer over four orders of magnitude in temperature, with as high as 0.1% accuracy and 0.02% precision in the range near 1 kelvin. The self-calibrating nature of this sensor allows for a much faster and simpler measurement than traditional Johnson noise thermometry, making it potentially attractive for metrology and for general use in cryogenic systems.

Referência(s)
Altmetric
PlumX