Browsing Physics (Scholarly Publications) by Author "Goold, John"
Now showing items 21-25 of 25
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Spin Heat Engine Coupled to a Harmonic-Oscillator Flywheel
Goold, John; Mitchison, Mark (2019)We realize a heat engine using a single-electron spin as a working medium. The spin pertains to the valence electron of a trapped ^{40}Ca^{+} ion, and heat reservoirs are emulated by controlling the spin polarization via ... -
Tensor-network method to simulate strongly interacting quantum thermal machines
Goold, John; Purkayastha, Archak; Mitchison, Mark (2020)We present a methodology to simulate the quantum thermodynamics of thermal machines which are built from an interacting working medium in contact with fermionic reservoirs at a fixed temperature and chemical potential. Our ... -
Thermodynamic Uncertainty Relations from Exchange Fluctuation Theorems
Goold, John (2019)Thermodynamic uncertainty relations (TURs) place strict bounds on the fluctuations of thermodynamic quantities in terms of the associated entropy production. In this Letter, we identify the tightest (and saturable) ... -
Thermodynamics of precision in quantum nonequilibrium steady states
Goold, John (2019)Autonomous engines operating at the nanoscale can be prone to deleterious fluctuations in the heat and particle currents. Thermodynamic uncertainty relations (TURs) express a fundamental lower bound which translates a ... -
Tunable phonon-induced steady state coherence in a double-quantum-dot charge qubit
Goold, John; Purkayastha, Archak; Mitchison, Mark (2020)Charge qubits can be created and manipulated in solid-state double-quantum-dot (DQD) platforms. Typically, these systems are strongly affected by quantum noise stemming from coupling to substrate phonons. This is usually ...