Collective heat capacity for quantum thermometry and quantum engine enhancements

Abstract

The performances of quantum thermometry in thermal equilibrium together with the output power of certain class of quantum engines share a common characteristic: both are determined by the heat capacity of the probe or working medium. After noticing that the heat capacity of spin ensembles can be significantly modified by collective coupling with a thermal bath, we build on the above observation to investigate the respective impact of such collective effect on quantum thermometry and quantum engines. We find that the precision of the temperature estimation is largely increased at high temperatures, reaching even the Heisenberg scaling - inversely proportional to the number of spins. For Otto engines operating close to the Carnot efficiency, collective coupling always enhances the output power. Some tangible experimental platforms are suggested.

arXiv commentAccepted version, 8 + 4 pages, 5 figures

References in corpus (38)

• Quantum metrology
• Nanometer scale quantum thermometry in a living cell
• General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology
• Quantum Thermodynamic Cycles and quantum heat engines
• Quantum Equivalence and Quantum Signatures in Heat Engines
• Experimental characterization of a spin quantum heat engine
• Individual quantum probes for optimal thermometry
• The power of a critical heat engine
• A spin heat engine coupled to a harmonic-oscillator flywheel
• Virtual qubits, virtual temperatures, and the foundations of thermodynamics
• Cavity Mediated Collective Spin Exchange Interactions in a Strontium Superradiant Laser
• Thermometry in the quantum regime: Recent theoretical progress
• Superradiant Hybrid Quantum Devices
• Efficiency of a quantum Otto heat engine operating under a reservoir at effective negative temperatures
• Quantum metrology in Lipkin-Meshkov-Glick critical systems
• Optimal cycles for low-dissipation heat engines
• Local quantum thermal susceptibility
• Magnetic criticality-enhanced hybrid nanodiamond-thermometer under ambient conditions
• Cooperative many-body enhancement of quantum thermal machine power
• Light-mediated strong coupling between a mechanical oscillator and atomic spins one meter apart
• Probing the temperature of cold many-body quantum systems
• Single-atom quantum probes for ultracold gases using nonequilibrium spin dynamics
• Fundamental limits on low-temperature quantum thermometry with finite resolution
• Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines
• Quantum Statistical Enhancement of the Collective Performance of Multiple Bosonic Engines
• Two-qubit quantum probes for the temperature of an Ohmic environment
• Thermometry Precision in Strongly Correlated Ultracold Lattice Gases
• Collective performance of a finite-time quantum Otto cycle
• Performance limits of multilevel and multipartite quantum heat machines
• Driven-Dissipative Quantum Dynamics in Ultra Long-lived Dipoles in an Optical Cavity
• Energetic and entropic effects of bath-induced coherences
• Quantum limit for measurement of a weak classical force coupled to a noisy quantum-mechanical oscillator
• Improved thermometry of low-temperature quantum systems by a ring-structure probe
• Achieving sub-shot-noise sensing at finite temperatures
• Thermodynamics from indistinguishability: mitigating and amplifying the effects of the bath
• Quantum Thermometry with Trapped Ions
• Interference effects in hybrid cavity optomechanics
• Quantum force estimation in arbitrary non-Markovian Gaussian bath

Cited by in corpus (31)

• Many-body quantum thermal machines
• Fundamental limits in Bayesian thermometry and attainability via adaptive strategies
• Tight bound on finite-resolution quantum thermometry at low temperatures
• Bath-Induced Correlations Enhance Thermometry Precision at Low Temperatures
• Collective effects on the performance and stability of quantum heat engines
• Roles of quantum coherences in thermal machines
• Spectroscopy and critical quantum thermometry in the ultrastrong coupling regime
• Low-temperature quantum thermometry boosted by coherence generation
• Approaching Heisenberg-scalable thermometry with built-in robustness against noise
• Multi-spin probes for thermometry in the strong-coupling regime
• Sub-nK thermometry of an interacting $d$-dimensional homogeneous Bose gas
• Optimal nonequilibrium thermometry in Markovian environments
• Surpassing the Thermal Cramer-Rao Bound with Collisional Thermometry
• Quadratic Enhancement in the Reliability of Collective Quantum Engines
• Non-Markovian temperature sensing
• Enhancing the performance of coupled quantum Otto thermal machines without entanglement and quantum correlations
• Quantum jump approach to microscopic heat engines
• A finite-time quantum Otto engine with tunnel coupled one-dimensional Bose gases
• Performance of the collective three-level quantum thermal engine
• Dissipation-induced collective advantage of a quantum thermal machine
• Exotic synchronization in continuous time crystals outside the symmetric subspace
• Strongly coupled fermionic probe for nonequilibrium thermometry
• Thermodynamics of Permutation-Invariant Quantum Many-Body Systems: A Group-Theoretical Framework
• Rydberg ion flywheel for quantum work storage
• Thermometry Based on a Superconducting Qubit
• The promises and challenges of many-body quantum technologies: a focus on quantum engines
• Collective effects enhanced multi-qubit information engines
• Leveraging collective effects for thermometry in waveguide quantum electrodynamics
• Charging a quantum spin network towards Heisenberg-limited precision
• How to describe collective decay of uncoupled modes in the input-output formalism
• Nonequilibrium quantum thermometry with noncommutative system-bath couplings