Quantum thermodynamic derivation of the energy resolution limit in magnetometry
- URL: http://arxiv.org/abs/2405.14687v3
- Date: Fri, 30 Aug 2024 14:27:49 GMT
- Title: Quantum thermodynamic derivation of the energy resolution limit in magnetometry
- Authors: I. K. Kominis,
- Abstract summary: We show that the energy resolution limit is a result of quantum thermodynamic work associated with quantum measurement and Landauer erasure.
We apply these considerations to atomic magnetometers, diamond magnetometers, and SQUIDs, spanning an energy resolution limit from $100hbar$ to $107hbar$.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: It was recently demonstrated that a multitude of realizations of several magnetic sensing technologies satisfy the energy resolution limit, which connects a quantity composed by the variance of the magnetic field estimate, the sensor volume and the measurement time, and having units of action, with $\hbar$. A first-principles derivation of this limit is still elusive. We here present such a derivation based on quantum thermodynamic arguments. We show that the energy resolution limit is a result of quantum thermodynamic work necessarily associated with quantum measurement and Landauer erasure, the work being exchanged with the magnetic field. We apply these considerations to atomic magnetometers, diamond magnetometers, and SQUIDs, spanning an energy resolution limit from $10^0\hbar$ to $10^7\hbar$. This connection between quantum thermodynamics and magnetometry can help advance quantum sensing technologies towards even more sensitive devices.
Related papers
- Is animal magnetoreception quantum? A perspective from the energy resolution limit [0.0]
A large number of magnetic sensors, like superconducting quantum interference devices, were shown to satisfy the energy resolution limit.
This limit states that the magnetic sensitivity of the sensor, when translated into a product of energy with time, is bounded below by Planck's constant.
Here we explore biological magnetometers, in particular three magnetoreception mechanisms thought to underly animals' geomagnetic field sensing.
arXiv Detail & Related papers (2024-09-22T19:57:20Z) - Levitated ferromagnetic magnetometer with energy resolution well below
$\hbar$ [4.298811315696524]
A limit on the measurement of magnetic field has been recently pointed out, stating that the so-called Energy Resolution $E_mathrmR$ is bounded to $E_mathrmR gtrsim hbar$.
Here we show that similar and potentially much better resolution can be achieved with a hard ferromagnet levitated above a superconductor at cryogenic temperature.
This finding opens the way to new applications in condensed matter, biophysics and fundamental science.
arXiv Detail & Related papers (2024-01-08T09:52:29Z) - Limits on quantum measurement engines [0.0]
We propose a quantum engine based on a spin 1/2 particle in a magnetic field.
We fully study its dynamics, work, power and efficiency.
arXiv Detail & Related papers (2023-12-13T13:58:42Z) - DC Quantum Magnetometry Below the Ramsey Limit [68.8204255655161]
We demonstrate quantum sensing of dc magnetic fields that exceeds the sensitivity of conventional $Tast$-limited dc magnetometry by more than an order of magnitude.
We used nitrogen-vacancy centers in a diamond rotating at periods comparable to the spin coherence time, and characterize the dependence of magnetic sensitivity on measurement time and rotation speed.
arXiv Detail & Related papers (2022-03-27T07:32:53Z) - Computing molecular excited states on a D-Wave quantum annealer [52.5289706853773]
We demonstrate the use of a D-Wave quantum annealer for the calculation of excited electronic states of molecular systems.
These simulations play an important role in a number of areas, such as photovoltaics, semiconductor technology and nanoscience.
arXiv Detail & Related papers (2021-07-01T01:02:17Z) - Surpassing the Energy Resolution Limit with ferromagnetic torque sensors [55.41644538483948]
We evaluate the optimal magnetic field resolution taking into account the thermomechanical noise and the mechanical detection noise at the standard quantum limit.
We find that the Energy Resolution Limit (ERL), pointed out in recent literature, can be surpassed by many orders of magnitude.
arXiv Detail & Related papers (2021-04-29T15:44:12Z) - 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) - Evolution of a Non-Hermitian Quantum Single-Molecule Junction at
Constant Temperature [62.997667081978825]
We present a theory for describing non-Hermitian quantum systems embedded in constant-temperature environments.
We find that the combined action of probability losses and thermal fluctuations assists quantum transport through the molecular junction.
arXiv Detail & Related papers (2021-01-21T14:33:34Z) - Energy Levels of Gapped Graphene Quantum Dot in Magnetic Field [0.0]
We study the energy levels of carriers confined in a magnetic quantum dot of graphene surrounded by a infinite graphene sheet in the presence of energy gap.
We numerically investigate our results and show that the energy levels exhibit the symmetric and antisymmetric behaviors under suitable conditions of the physical parameters.
arXiv Detail & Related papers (2020-08-06T15:32:57Z) - Quantum coherent spin-electric control in a molecular nanomagnet at
clock transitions [57.50861918173065]
Electrical control of spins at the nanoscale offers architectural advantages in spintronics.
Recent demonstrations of electric-field (E-field) sensitivities in molecular spin materials are tantalising.
E-field sensitivities reported so far are rather weak, prompting the question of how to design molecules with stronger spin-electric couplings.
arXiv Detail & Related papers (2020-05-03T09:27:31Z)
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.