Magnon-Phonon Quantum Correlation Thermometry

• URL: http://arxiv.org/abs/2001.11124v1
• Date: Wed, 29 Jan 2020 22:57:51 GMT
• Title: Magnon-Phonon Quantum Correlation Thermometry
• Authors: C.A. Potts, V.A.S.V. Bittencourt, S. Viola Kusminskiy, and J.P. Davis
• Abstract summary: A large fraction of quantum science and technology requires low-temperature environments such as those afforded by dilution refrigerators. Here, we theoretically propose a primary thermometer based on measurement of a hybrid system consisting of phonons coupled via a magnetostrictive interaction to magnons.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A large fraction of quantum science and technology requires low-temperature environments such as those afforded by dilution refrigerators. In these cryogenic environments, accurate thermometry can be difficult to implement, expensive, and often requires calibration to an external reference. Here, we theoretically propose a primary thermometer based on measurement of a hybrid system consisting of phonons coupled via a magnetostrictive interaction to magnons. Thermometry is based on a cross-correlation measurement in which the spectrum of back-action driven motion is used to scale the thermomechanical motion, providing a direct measurement of the phonon temperature independent of experimental parameters. Combined with a simple low-temperature compatible microwave cavity read-out, this primary thermometer is expected to become a popular thermometer for experiments below 1 K.

Related papers

• Global quantum thermometry based on the optimal biased bound [10.11168891945202]
  We derive two basic bounds on thermometry precision in the global setting. We show their thermometry performance by two specific applications, i.e., noninteracting spin-1/2 gas and a general N-level thermal equilibrium quantum probe.
  arXiv  Detail & Related papers  (2023-05-15T07:24:48Z)
• Low-temperature quantum thermometry boosted by coherence generation [0.0]
  We present a method for low-temperature measurement that improves thermal range and sensitivity by generating quantum coherence in a thermometer probe. We use a two-level quantum system, or qubit, as our probe and prevent direct probe access to the sample by introducing a set of ancilla qubits as an interface.
  arXiv  Detail & Related papers  (2022-11-10T10:12:58Z)
• Experimental verification of fluctuation relations with a quantum computer [68.8204255655161]
  We use a quantum processor to experimentally validate a number of theoretical results in non-equilibrium quantum thermodynamics. Our experiments constitute the experimental basis for the understanding of the non-equilibrium energetics of quantum computation.
  arXiv  Detail & Related papers  (2021-06-08T14:16:12Z)
• Role of topology in determining the precision of a finite thermometer [58.720142291102135]
  We find that low connectivity is a resource to build precise thermometers working at low temperatures. We compare the precision achievable by position measurement to the optimal one, which itself corresponds to energy measurement.
  arXiv  Detail & Related papers  (2021-04-21T17:19:42Z)
• Taking the temperature of a pure quantum state [55.41644538483948]
  Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. We propose a scheme to measure the temperature of such pure states through quantum interference.
  arXiv  Detail & Related papers  (2021-03-30T18:18:37Z)
• Adiabatic Sensing Technique for Optimal Temperature Estimation using Trapped Ions [64.31011847952006]
  We propose an adiabatic method for optimal phonon temperature estimation using trapped ions. The relevant information of the phonon thermal distributions can be transferred to the collective spin-degree of freedom. We show that each of the thermal state probabilities is adiabatically mapped onto the respective collective spin-excitation configuration.
  arXiv  Detail & Related papers  (2020-12-16T12:58:08Z)
• Optimal Quantum Thermometry with Coarse-grained Measurements [0.0]
  We explore the precision limits for temperature estimation when only coarse-grained measurements are available. We apply our results to many-body systems and nonequilibrium thermometry.
  arXiv  Detail & Related papers  (2020-11-20T17:12:55Z)
• Thermoelectricity in Quantum-Hall Corbino Structures [48.7576911714538]
  We measure the thermoelectric response of Corbino structures in the quantum Hall effect regime. We predict a figure of merit for the efficiency of thermoelectric cooling which becomes very large for partially filled Landau levels.
  arXiv  Detail & Related papers  (2020-03-03T19:19:28Z)
• Bath-Induced Correlations Enhance Thermometry Precision at Low Temperatures [0.0]
  We study the role of bath-induced correlations in temperature estimation of cold bosonic baths. Although classical, bath-induced correlations can lead to significant enhancement of precision for thermometry.
  arXiv  Detail & Related papers  (2020-01-31T13:31:17Z)
• Reservoir engineering with arbitrary temperatures for spin systems and quantum thermal machine with maximum efficiency [50.591267188664666]
  Reservoir engineering is an important tool for quantum information science and quantum thermodynamics. We employ this technique to engineer reservoirs with arbitrary (effective) negative and positive temperatures for a single spin system.
  arXiv  Detail & Related papers  (2020-01-28T00:18:00Z)
• Tight bound on finite-resolution quantum thermometry at low temperatures [0.0]
  We investigate fundamental precision limits for thermometry on cold quantum systems. We derive a tight bound on the optimal precision scaling with temperature, as the temperature approaches zero.
  arXiv  Detail & Related papers  (2020-01-13T08:13:42Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.