113 citations · 490 across the 23 of their papers we have counts for
23 papers
Noether Symmetries Generate Deterministic Energy-Harvesting Protocols
Ali Akil, M. Hamed Mohammady, Zihan Wang +1
We consider the general principles for when deterministic energy harvesting (DEH) is possible. DEH means absorbing energy from a fluctuating source without entropy being absorbed.…
A hierarchy of thermodynamically consistent quantum operations
Fereshte Shahbeigi, M. Hamed Mohammady
In order to determine what quantum operations and measurements are consistent with the laws of thermodynamics, one must start by allowing all processes allowed by the framework of…
Thermodynamic closure of quantum measurements and the limits of the indirect measurement model
M. Hamed Mohammady, Francesco Buscemi
We investigate the consequences of requiring that a quantum measurement admit an adiabatic enclosure, so that it can be assigned a genuine thermodynamic description in which energy…
Universal validity of the second law of information thermodynamics
Shintaro Minagawa, M. Hamed Mohammady, Kenta Sakai +2
Adiabatic measurements, followed by feedback and erasure protocols, have often been considered as a model to embody Maxwell's Demon paradox and to study the interplay between therm…
Quantum measurements constrained by the third law of thermodynamics
M. Hamed Mohammady, Takayuki Miyadera
In the quantum regime, the third law of thermodynamics implies the unattainability of pure states. As shown recently, such unattainability implies that a unitary interaction betwee…
Thermodynamically free quantum measurements
M. Hamed Mohammady
Thermal channels -- the free processes allowed in the resource theory of quantum thermodynamics -- are generalised to thermal instruments, which we interpret as implementing thermo…
Measurement disturbance and conservation laws in quantum mechanics
M. Hamed Mohammady, Takayuki Miyadera, Leon Loveridge
Measurement error and disturbance, in the presence of conservation laws, are analysed in general operational terms. We provide novel quantitative bounds demonstrating necessary con…
Classicality of the heat produced by quantum measurements
M. Hamed Mohammady
Quantum measurement is ultimately a physical process, resulting from an interaction between the measured system and a measuring apparatus. Considering the physical process of measu…
Self-consistency of the two-point energy measurement protocol
M. Hamed Mohammady
A thermally isolated quantum system undergoes unitary evolution by interacting with an external work source. The two-point energy measurement (TPM) protocol defines the work exchan…
Joint statistics of work and entropy production along quantum trajectories
Harry J. D. Miller, M. Hamed Mohammady, Martí Perarnau-Llobet +1
In thermodynamics, entropy production and work quantify irreversibility and the consumption of useful energy, respectively, when a system is driven out of equilibrium. For quantum…
Thermodynamic uncertainty relation in slowly driven quantum heat engines
Harry J. D. Miller, M. Hamed Mohammady, Martí Perarnau-Llobet +1
Thermodynamic Uncertainty Relations express a trade-off between precision, defined as the noise-to-signal ratio of a generic current, and the amount of associated entropy productio…
Fluctuating quantum heat
M. Hamed Mohammady
The increase in average energy of a quantum system undergoing projective energy measurements is referred to as "quantum heat", which is always zero. In the framework of quantum sto…
Efficiency of a cyclic quantum heat engine with finite-size baths
M. Hamed Mohammady, Alessandro Romito
In this paper we investigate the relationship between the efficiency of a cyclic quantum heat engine with the Hilbert space dimension of the thermal baths. By means of a general in…
Symmetry constrained decoherence of conditional expectation values
M. Hamed Mohammady, Alessandro Romito
Conditional expectation values of quantum mechanical observables reflect unique non-classical correlations, and are generally sensitive to decoherence. We consider the circumstance…
Conditional work statistics of quantum measurements
M. Hamed Mohammady, Alessandro Romito
In this paper we introduce a definition for conditional energy changes due to general quantum measurements, as the change in the conditional energy evaluated before, and after, the…
A quantum Szilard engine without heat from a thermal reservoir
M. Hamed Mohammady, Janet Anders
We study a quantum Szilard engine that is not powered by heat drawn from a thermal reservoir, but rather by projective measurements. The engine is constituted of a system $\mathcal…
Low-control and robust quantum refrigerator and applications with electronic spins in diamond
M. Hamed Mohammady, Hyeongrak Choi, Matthew E. Trusheim +3
We propose a general protocol for low-control refrigeration and thermometry of thermal qubits, which can be implemented using electronic spins in diamond. The refrigeration is impl…
Minimising the heat dissipation of quantum information erasure
M. Hamed Mohammady, Masoud Mohseni, Yasser Omar
Quantum state engineering and quantum computation rely on information erasure procedures that, up to some fidelity, prepare a quantum object in a pure state. Such processes occur w…
Nuclear-electronic spin systems, magnetic resonance, and quantum information processing
M. H. Mohammady
A promising platform for quantum information processing is that of silicon impurities, where the quantum states are manipulated by magnetic resonance. Such systems, in abstraction,…
Measuring central-spin interaction with a spin bath by pulsed ENDOR: Towards suppression of spin diffusion decoherence
S. J. Balian, M. B. A. Kunze, M. H. Mohammady +4
We present pulsed electron-nuclear double resonance (ENDOR) experiments which enable us to characterize the coupling between bismuth donor spin qubits in Si and the surrounding spi…
Quantum control of hybrid nuclear-electronic qubits
Gavin W. Morley, Petra Lueders, M. Hamed Mohammady +6
Pulsed magnetic resonance is a wide-reaching technology allowing the quantum state of electronic and nuclear spins to be controlled on the timescale of nanoseconds and microseconds…
Analysis of quantum coherence in bismuth-doped silicon: a system of strongly coupled spin qubits
M. H. Mohammady, G. W. Morley, A. Nazir +1
There is growing interest in bismuth-doped silicon (Si:Bi) as an alternative to the well-studied proposals for silicon based quantum information processing (QIP) using phosphorus-d…
Bismuth in silicon qubits: the role of EPR cancellation resonances
M. H. Mohammady, G. W. Morley, T. S. Monteiro
We investigate theoretically and experimentally the electron paramagnetic resonance (EPR) spectra of bismuth doped silicon (Si:Bi) at intermediate magnetic fields, $B \approx 0.05…