Ancilla-assisted measurement of quantum work
arXiv:1805.06047 · doi:10.1007/978-3-319-99046-0_14
Abstract
We review the use of an external auxiliary detector for measuring the full distribution of the work performed on or extracted from a quantum system during a unitary thermodynamic process. We first illustrate two paradigmatic schemes that allow one to measure the work distribution: a Ramsey technique to measure the characteristic function and a positive operator valued measure (POVM) scheme to directly measure the work probability distribution. Then, we show that these two ideas can be understood in a unified framework for assessing work fluctuations through a generic quantum detector and describe two protocols that are able to yield complementary information. This allows us also to highlight how quantum work is affected by the presence of coherences in the system's initial state. Finally, we describe physical implementations and experimental realisations of the first two schemes.
Published version. As a chapter of: F. Binder, L. A. Correa, C. Gogolin, J. Anders, and G. Adesso (eds.), "Thermodynamics in the quantum regime - Recent Progress and Outlook", (Springer International Publishing)
References in corpus (14)
- Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
- Fluctuation theorems: Work is not an observable
- Fluctuation Theorem for Arbitrary Open Quantum Systems
- Work measurement as a generalized quantum measurement
- Non-equilibrium quantum fluctuations of work
- Using a quantum work meter to test non-equilibrium fluctuation theorems
- Assessing the non-equilibrium thermodynamics in a quenched quantum many-body system via single projective measurements
- Jarzynski equation for a simple quantum system: Comparing two definitions of work
- Probing Quantum Interference Effects in the Work Distribution
- Measuring work and heat in ultracold quantum gases
- Quasiprobabilistic Interpretation of Weak measurements in Mesoscopic Junctions
- Quasi-probability distributions for observables in dynamic systems
- Measurement-dependent corrections to work distributions arising from quantum coherences
- Cavity assisted measurements of heat and work in optical lattices