Asymmetry Resource Theory
Seminar date and time:
2020-01-23 12:00
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Upcoming seminars
Floquet Theory
Seminar date and time:
2020-01-21 15:00
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ArXiv review
Seminar date and time:
2020-01-15 12:00
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A geometric approach to quantum thermodynamics: from quantum fluctuations to optimal protocols
Seminar date and time:
2019-12-17 12:00
Affiliation:
Max-Planck-Institute of Quantum Optics, Garching
The average dissipation generated during a slow thermodynamic process can be characterised by introducing a metric on the space of Gibbs states, in such a way that minimally-dissipating protocols correspond to geodesic trajectories. Furthermore, the dissipation is proportional to the work fluctuations for classical systems (which follows from the fluctuation-dissipation relation (FDR)), so that minimising dissipation also minimises fluctuations. In this talk, I will explain how this geometric picture is modified in the quantum regime.
Asymmetry resource theory
Seminar date and time:
2019-12-12 15:30
No-go theorems for quantum resource purification, with applications to quantum computation
Seminar date and time:
2019-12-11 12:00
Affiliation:
Perimeter Institute for Theoretical Physics
The field of quantum information takes a pragmatic approach to examining and utilizing quantum mechanics, seeking to obtain rigorous understandings of which information processing tasks can (e.g. quantum computing, communication) or cannot (e.g.
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Quantum Floquet theory: An introduction
Seminar date and time:
2019-12-10 15:00
Systems with time-dependent Hamiltonians are not constrained to energy conservation. Hence, the dynamics of driven physical systems can be significantly different to its static counterpart. Then, driven systems are a new platform where exciting phenomena can be discovered. However, analytical solutions of the dynamics of driven systems are extremely rare and it is typically difficult to gain intuition.
Stochastic processes
Seminar date and time:
2019-12-04 12:00
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arXiv review
Seminar date and time:
2019-11-28 12:00
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Thermodynamics of precision in quantum non-equilibrium steady states
Seminar date and time:
2019-11-27 12:00
Affiliation:
Trinity College Dublin
We investigate the fundamental trade-off between current fluctuations and entropy production for systems in non-equilibrium steady states (NESS). We use the technique of non-equilibrium statistical operators of McLennan/Zubarev form and illustrate how the entropy production can be expressed as a quantum relative entropy. Furthermore, by exploiting the geometry of the manifold of NESS states, we use parameter estimation in order to bound the co-variance of the currents in the NESS by the entropy production.
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