期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.230601
关键词
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资金
- EPSRC
- IRCSET through a Marie Curie International Mobility fellowship
- National Research Foundation
- Ministry of Education of Singapore
- Wolfson College Oxford
- John Templeton Foundation
- Leverhulme Trust (UK)
We propose an experimental scheme to verify the quantum nonequilibrium fluctuation relations using current technology. Specifically, we show that the characteristic function of the work distribution for a nonequilibrium quench of a general quantum system can be extracted by Ramsey interferometry of a single probe qubit. Our scheme paves the way for the full characterization of nonequilibrium processes in a variety of quantum systems, ranging from single particles to many-body atomic systems and spin chains. We demonstrate our idea using a time-dependent quench of the motional state of a trapped ion, where the internal pseudospin provides a convenient probe qubit.
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