Research Interests

Quantum Information theory is not one particular physical topic, but really a way of analysing quantum systems, which can be applied in quite different settings.  Below are rough areas in which I have been doing work and applying such techniques. The aim is to give a mini-overview of my interests.
Thermodynamics & quantum resource theories

A recent powerful notion that has emerged from the theory of quantum entanglement is the idea of an abstract quantum resource.
We now have a zoo of different quantum resource theories, which display fascinating interconnections.

Of particular note is recent work that tries to cast quantum thermodynamics as a resource theory. My work attempts to identify genuinely quantum-mechanical aspects within this formalism. A related quantum resource theory is the resource theory of asymmetry. It shows that the structure of asymmetric objects is highly complex compared to symmetric objects, and moreover the resulting theory finds application in various areas of quantum physics.
Recent work:
Quantum coherence, time-translation symmetry and thermodynamics,
M. Lostaglio, K. Korzekwa, D. Jennings, T. Rudolph
Phys. Rev. X 5, 021001 (2015)

Description of quantum coherence in thermodynamic processes requires constraints beyond free energy,
M. Lostaglio, D. Jennings, T. Rudolph, 
Nature Communications 6, 6383 (2015)
Reexamination of Pure Qubit Work Extraction
M. F. Frenzel, D. Jennings, T. Rudolph
Phys. Rev. E 90, 052136 (2014)

The WAY theorem and the quantum resource theory of asymmetry,
M. Ahmadi, D. Jennings, T. Rudolph,
New J. Phys. 15 013057 (2013)

Entanglement and the thermodynamic arrow,
D. Jennings, T. Rudolph
Phys. Rev. E. 81 061130 (2010)
Structural/foundational topics

The structure of quantum mechanics is endlessly fascinating. Previous work of mine has studied geometric aspects of entanglement and correlation. Also of interest is the topic of uncertainty relations, such as complementarity and measurement-disturbance.
Recent work:

Quantum Steering Ellipsoids,
S. Jevtic, M. Pusey, D. Jennings, T. Rudolph,
Phys. Rev. Lett. 113, 020402 (2014)

Operational constraints on state-dependent formulations of quantum error-disturbance trade-off relations
K. Korzekwa, D. Jennings, T. Rudolph
Phys. Rev. A 89, 052108 (2014)

Quantum and classical entropic uncertainty relations
K. Korzekwa, M. Lostaglio, D. Jennings, T. Rudolph
Phys. Rev. A 89, 042122 (2014)

Distinct quantum states can be compatible with a single state of reality
P. G. Lewis, D. Jennings, J. Barrett, T. Rudolph
Phys. Rev. Lett. 109, 150404 (2012)

Maximally and minimally correlated states attainable in a closed evolving system,
S. Jevtic, D. Jennings, T. Rudolph,
Phys. Rev. Lett. 108, 110403 (2012)
Specific physical implementations and algorithms - QFT and QC
Quantum information is often associated with the goal of building quantum computers, and a particular physical implementation is in the direction of measurement-based quantum computation.