Steps towards experimental demonstration of information to energy conversion in a quantum system at the Landauer limit

  • IFISC Seminar

  • John Goold
  • The Abdus Salam International Centre for Theoretical Physics (ICTP
  • Nov. 26, 2014, 2:30 p.m.
  • IFISC Seminar Room
  • Announcement file

Landauer's principle states that the heat generation in an
irreversible computation must always be greater than or equal to the
information theoretic entropy change and hence sets a fundamental limit on
the thermodynamics of information processing, Using concepts and ideas
from
stochastic thermodynamics several experiments have explored the
thermodynamics of information processing at the ultimate limit set by
Landauer. In this approach to thermodynamics quantities such as heat and
work are described stochastically as fluctuations about average values
dominate physics. Turning towards quantum systems no such experiments
are yet in operation. This is primarily due to the additional fragility
associated with performing measurements on quantum systems. Very
recently, interferometric methods have been proposed and used to measure
the full statistics of work performed by replacing the necessity of
projective measurements by performing phase estimation on an
appropriately coupled ancilla qubit. In this talk I will outline how
these schemes are modified to allow the extraction of statistics of heat
dissipated from an elementary operation on a quantum system has been
performed. I will also discuss preliminary experimental results and
interesting theoretical extensions.


Contact details:

Manuel Matías

Contact form


This web uses cookies for data collection with a statistical purpose. If you continue browsing, it means acceptance of the installation of the same.


More info I agree