91 citations · 390 across the 24 of their papers we have counts for
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Dephasing-enhanced performance in quasiperiodic thermal machines
Cecilia Chiaracane, Archak Purkayastha, Mark T. Mitchison +1
Understanding and controlling quantum transport in low-dimensional systems is pivotal for heat management at the nanoscale. One promising strategy to obtain the desired transport p…
Fundamental limitations in Lindblad descriptions of systems weakly coupled to baths
Devashish Tupkary, Abhishek Dhar, Manas Kulkarni +1
It is very common in the literature to write down a Markovian quantum master equation in Lindblad form to describe a system with multiple degrees of freedom and weakly connected to…
Sub-diffusive phases in open clean long-range systems
Archak Purkayastha, Madhumita Saha, Bijay Kumar Agarwalla
We show that a one-dimensional ordered fermionic lattice system with power-law-decaying hopping, when connected to two baths at its two ends with different chemical potentials at z…
Time periodicity from randomness in quantum systems
Giacomo Guarnieri, Mark T. Mitchison, Archak Purkayastha +3
Many complex systems can spontaneously oscillate under non-periodic forcing. Such self-oscillators are commonplace in biological and technological assemblies where temporal periodi…
Taking the temperature of a pure quantum state
Mark T. Mitchison, Archak Purkayastha, Marlon Brenes +2
Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. The observation of thermalisation in completely isolated…
Quantum dynamics in the interacting Fibonacci chain
Cecilia Chiaracane, Francesca Pietracaprina, Archak Purkayastha +1
Quantum dynamics on quasiperiodic geometries has recently gathered significant attention in ultra-cold atom experiments where non trivial localised phases have been observed. One s…