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, quantum information theory, quantum references, particle-wave duality, quantum thermodynamics and the physical nature of time.

Works

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][5] She has established a connection between the violation of time reversal symmetry (T violation) and the nature of time.[6] Her work proposes T violation as the origin of dynamics which has implications for the arrow of time [7]

Membership

She is a member of the Centre for Quantum Dynamics and a Fellow of the Institute of Physics.[8]

References

  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). arXiv:quant-ph/0501121Freely accessible. Bibcode:2008PhRvA..77c2114V. 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. arXiv:1310.7821Freely accessible. Bibcode:2013Entrp..15.4956B. doi:10.3390/e15114956.
  5. ↑ Zyga, Lisa (25 January 2011). "Scientists show how to erase information without using energy". Retrieved 7 May 2016 – via www.phys.org.
  6. ↑ Vaccaro, Joan A. (2016-01-01). "Quantum asymmetry between time and space". Proc. R. Soc. A. 472 (2185): 20150670. arXiv:1502.04012Freely accessible. Bibcode:2016RSPSA.47250670V. doi:10.1098/rspa.2015.0670. ISSN 1364-5021. PMC 4786044Freely accessible. PMID 26997899.
  7. ↑ Jacobson, Michael (28 January 2016). "Bringing time, space together for universal symmetry". Newsfeed. Retrieved 7 May 2016 – via www.griffith.edu.au.
  8. ↑ http://www.iop.org/news/member/2013/page_62117.html

External links


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