Reaching the ultimate energy resolution of a quantum detector

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Reaching the ultimate energy resolution of a quantum detector. / Karimi, Bayan; Brange, Fredrik; Samuelsson, Peter; Pekola, Jukka P.

In: Nature Communications, Vol. 11, No. 1, 367, 01.12.2020, p. 1-6.

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Karimi, Bayan ; Brange, Fredrik ; Samuelsson, Peter ; Pekola, Jukka P. / Reaching the ultimate energy resolution of a quantum detector. In: Nature Communications. 2020 ; Vol. 11, No. 1. pp. 1-6.

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@article{1c472cafc626455fae6fd74a31b94827,
title = "Reaching the ultimate energy resolution of a quantum detector",
abstract = "Quantum calorimetry, the thermal measurement of quanta, is a method of choice for ultrasensitive radiation detection ranging from microwaves to gamma rays. The fundamental temperature fluctuations of the calorimeter, dictated by the coupling of it to the heat bath, set the ultimate lower bound of its energy resolution. Here we reach this limit of fundamental equilibrium fluctuations of temperature in a nanoscale electron calorimeter, exchanging energy with the phonon bath at very low temperatures. The approach allows noninvasive measurement of energy transport in superconducting quantum circuits in the microwave regime with high efficiency, opening the way, for instance, to observe quantum jumps, detecting their energy to tackle central questions in quantum thermodynamics.",
author = "Bayan Karimi and Fredrik Brange and Peter Samuelsson and Pekola, {Jukka P.}",
note = "| openaire: EC/H2020/742559/EU//SQH | openaire: EC/H2020/766025/EU//QuESTech",
year = "2020",
month = "12",
day = "1",
doi = "10.1038/s41467-019-14247-2",
language = "English",
volume = "11",
pages = "1--6",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

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TY - JOUR

T1 - Reaching the ultimate energy resolution of a quantum detector

AU - Karimi, Bayan

AU - Brange, Fredrik

AU - Samuelsson, Peter

AU - Pekola, Jukka P.

N1 - | openaire: EC/H2020/742559/EU//SQH | openaire: EC/H2020/766025/EU//QuESTech

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Quantum calorimetry, the thermal measurement of quanta, is a method of choice for ultrasensitive radiation detection ranging from microwaves to gamma rays. The fundamental temperature fluctuations of the calorimeter, dictated by the coupling of it to the heat bath, set the ultimate lower bound of its energy resolution. Here we reach this limit of fundamental equilibrium fluctuations of temperature in a nanoscale electron calorimeter, exchanging energy with the phonon bath at very low temperatures. The approach allows noninvasive measurement of energy transport in superconducting quantum circuits in the microwave regime with high efficiency, opening the way, for instance, to observe quantum jumps, detecting their energy to tackle central questions in quantum thermodynamics.

AB - Quantum calorimetry, the thermal measurement of quanta, is a method of choice for ultrasensitive radiation detection ranging from microwaves to gamma rays. The fundamental temperature fluctuations of the calorimeter, dictated by the coupling of it to the heat bath, set the ultimate lower bound of its energy resolution. Here we reach this limit of fundamental equilibrium fluctuations of temperature in a nanoscale electron calorimeter, exchanging energy with the phonon bath at very low temperatures. The approach allows noninvasive measurement of energy transport in superconducting quantum circuits in the microwave regime with high efficiency, opening the way, for instance, to observe quantum jumps, detecting their energy to tackle central questions in quantum thermodynamics.

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U2 - 10.1038/s41467-019-14247-2

DO - 10.1038/s41467-019-14247-2

M3 - Article

VL - 11

SP - 1

EP - 6

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 367

ER -

ID: 40736466