Joan Vaccaro

Joan Vaccaro is a physicist at Griffith University and a former student of David Pegg (physicist). Her work in quantum physics includes quantum phase,[1] nonclassical states of light, coherent laser excitation of atomic gases, cold atomic gases, stochastic Schrödinger equations, and quantum information theory.

She is well-known for her work on quantum asymmetry having formulated the widely-used entropic measure AG(ρ) of the ability of a system to act as a reference and extended quantum resource theory beyond that of quantum entanglement at the same time.[2]

She has extended Landauer's erasure principle, a key result connecting information theory and thermodynamics, to the erasure of information using diverse entropy reservoirs for which there may be a zero cost in terms of energy.[3][4]

She has established a connection between the violation of time reversal symmetry (T violation) and the nature of time.[5] Her work proposes T violation as the origin of dynamics.

She is a member of the Centre for Quantum Dynamics and a Fellow of the Institute of Physics.[6]

  1. ↑ The Quantum Phase Operator: A Review S.M. Barnett and J.A. Vaccaro (CRC Press, 2007)
  2. ↑ Vaccaro, J. A. (2008-01-01). "Tradeoff between extractable mechanical work, accessible entanglement, and ability to act as a reference system, under arbitrary superselection rules". Physical Review A 77 (3). doi:10.1103/PhysRevA.77.032114.
  3. ↑ Vaccaro, Joan A.; Barnett, Stephen M. (2011-06-08). "Information erasure without an energy cost". Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences 467 (2130): 1770–1778. doi:10.1098/rspa.2010.0577. ISSN 1364-5021.
  4. ↑ Barnett, Stephen M.; Vaccaro, Joan A. (2013-11-13). "Beyond Landauer Erasure". Entropy 15 (11): 4956–4968. doi:10.3390/e15114956.
  5. ↑ Vaccaro, Joan A. (2016-01-01). "Quantum asymmetry between time and space". Proc. R. Soc. A 472 (2185): 20150670. doi:10.1098/rspa.2015.0670. ISSN 1364-5021. PMC 4786044. PMID 26997899.
  6. ↑ http://www.iop.org/news/member/2013/page_62117.html

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