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Early quantum work-distribution measurements in NMR and a trapped ion

Two teams developed complementary experimental routes to quantum work statistics. Batalhão and colleagues mapped a driven carbon nuclear spin’s work characteristic function onto a hydrogen-spin interferometer and reconstructed forward and backward work distributions. An and colleagues measured initial phonon statistics, prepared corresponding number states and inferred driven transitions of a trapped ytterbium ion from sideband signals. The experiments compared reconstructed work statistics with quantum fluctuation relations; the ion study reported Jarzynski estimates consistent with zero dissipated-work bias over three temperatures and three drive durations.

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What is recorded here?

Two teams developed complementary experimental routes to quantum work statistics. Batalhão and colleagues mapped a driven carbon nuclear spin’s work characteristic function onto a hydrogen-spin interferometer and reconstructed forward and backward work distributions. An and colleagues measured initial phonon statistics, prepared corresponding number states and inferred driven transitions of a trapped ytterbium ion from sideband signals. The experiments compared reconstructed work statistics with quantum fluctuation relations; the ion study reported Jarzynski estimates consistent with zero dissipated-work bias over three temperatures and three drive durations.

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Scientific scope

The NMR experiment uses normalized signals from effective thermal spin states in a room-temperature ensemble. The ion experiment combines initial-state statistics with separately prepared number states and fitted final populations, rather than recording complete pairs of energy outcomes along every trajectory. Effective rotating-frame energies, finite-state truncation, calibration and heating enter the analysis. The NMR preprint contains unresolved formula discrepancies; the ion paper also has separate supplementary material. These are scoped experimental tests of inherited relations, not new proofs, universal work measurements or violations of the second law.

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People and systems

Tiago Batalhão; Alexandre M. Souza; Laura Mazzola; Ruben Auccaise; Roberto S. Sarthour; Ivan S. Oliveira; John Goold; Gabriele De Chiara; Mauro Paternostro; Roberto M. Serra; Shuoming An; Jing-Ning Zhang; Mark Um; Dingshun Lv; Yao Lu; Junhua Zhang; Zhang-qi Yin; H. T. Quan; Kihwan Kim

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

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English catalogue narrative

Early quantum work-distribution measurements in NMR and a trapped ion

Two teams developed complementary experimental routes to quantum work statistics. Batalhão and colleagues mapped a driven carbon nuclear spin’s work characteristic function onto a hydrogen-spin interferometer and reconstructed forward and backward work distributions. An and colleagues measured initial phonon statistics, prepared corresponding number states and inferred driven transitions of a trapped ytterbium ion from sideband signals. The experiments compared reconstructed work statistics with quantum fluctuation relations; the ion study reported Jarzynski estimates consistent with zero dissipated-work bias over three temperatures and three drive durations.

Scientific scope

The NMR experiment uses normalized signals from effective thermal spin states in a room-temperature ensemble. The ion experiment combines initial-state statistics with separately prepared number states and fitted final populations, rather than recording complete pairs of energy outcomes along every trajectory. Effective rotating-frame energies, finite-state truncation, calibration and heating enter the analysis. The NMR preprint contains unresolved formula discrepancies; the ion paper also has separate supplementary material. These are scoped experimental tests of inherited relations, not new proofs, universal work measurements or violations of the second law.

Reading status

This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.

People and systems

Tiago Batalhão; Alexandre M. Souza; Laura Mazzola; Ruben Auccaise; Roberto S. Sarthour; Ivan S. Oliveira; John Goold; Gabriele De Chiara; Mauro Paternostro; Roberto M. Serra; Shuoming An; Jing-Ning Zhang; Mark Um; Dingshun Lv; Yao Lu; Junhua Zhang; Zhang-qi Yin; H. T. Quan; Kihwan Kim

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

Original sources