Optimal Quantum Thermometry with Coarse-Grained Measurements
Karen V. Hovhannisyan, Mathias R. Jørgensen, Gabriel T. Landi, Álvaro M. Alhambra, Jonatan Bohr Brask, Martí Perarnau-Llobet
Abstract
Fundamental precision limits for temperature estimation of complex samples using small probes are derived, and it is found that nearly optimal sensing can be achieved with the smallest possible probe consisting of just a single qubit.
Topics & Concepts
GranularityStatistical physicsScalingNon-equilibrium thermodynamicsQuantumDimension (graph theory)PhysicsEnergy (signal processing)CriticalityObservableComputer scienceComputational physicsAlgorithmQuantum mechanicsMathematicsOperating systemNuclear physicsPure mathematicsGeometryQuantum Information and CryptographyAdvanced Thermodynamics and Statistical MechanicsCold Atom Physics and Bose-Einstein Condensates