Joan Vaccaro

Joan Vaccaro is a physicist at Griffith University and a former student of David Pegg. 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, wave–particle duality, quantum thermodynamics, and the physical nature of time.

Joan Vaccaro
Born1956 (age 64–65)
NationalityAustralian
Alma materGriffith University (BSc, PHD)
Scientific career
Fields
Institutions
ThesisPhysical Number-phase Intelligent and Minimum-uncertainty States of Light (1990)
Doctoral advisorDavid Pegg
Websitewww.griffith.edu.au/professional-page/joan-vaccaro

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] and demonstrated the extended principle in the design of a quantum dot heat engine.[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. (1 January 2008). "Tradeoff between extractable mechanical work, accessible entanglement, and ability to act as a reference system, under arbitrary superselection rules". Physical Review A. 77 (3): 032114. arXiv:quant-ph/0501121. Bibcode:2008PhRvA..77c2114V. doi:10.1103/PhysRevA.77.032114. S2CID 26860319.
  3. Vaccaro, Joan A.; Barnett, Stephen M. (8 June 2011). "Information erasure without an energy cost". Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences. 467 (2130): 1770–1778. arXiv:1004.5330. Bibcode:2011RSPSA.467.1770V. doi:10.1098/rspa.2010.0577. ISSN 1364-5021. S2CID 11768197.
  4. Barnett, Stephen M.; Vaccaro, Joan A. (13 November 2013). "Beyond Landauer Erasure". Entropy. 15 (11): 4956–4968. arXiv:1310.7821. Bibcode:2013Entrp..15.4956B. doi:10.3390/e15114956. S2CID 16110551.
  5. Wright, J.S.S.T.; Gould, T.; Carvalho, A.R.R.; Bedkihal, S.; Vaccaro, J.A. (2018). "Quantum heat engine operating between thermal and spin reservoirs". Physical Review A. 97 (5): 052104. arXiv:1804.00843. Bibcode:2018PhRvA..97e2104W. doi:10.1103/PhysRevA.97.052104. S2CID 53952802.
  6. Vaccaro, Joan A. (1 January 2016). "Quantum asymmetry between time and space". Proc. R. Soc. A. 472 (2185): 20150670. arXiv:1502.04012. Bibcode:2016RSPSA.47250670V. doi:10.1098/rspa.2015.0670. ISSN 1364-5021. PMC 4786044. 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. "New fellows, new members and In Memoriam in January 2014". Archived from the original on 1 December 2017.
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