Ali Soltanmanesh

In quantum computing, calculations are achieved using quantum mechanics. Typically, two main phenomena of quantum mechanics (i.e., superposition and entanglement) allow quantum computing to solve some problems more efficiently than classical algorithms. The most well-known advantage of quantum computing is the speedup of some of the calculations, which have been performed before by classical applications. Scientists and engineers are attempting to use quantum computing in different fields of science, e.g., drug discovery, chemistry, computer science, etc. However, there are few attempts to use quantum computing in power and energy applications. This paper tries to highlight this gap by discussing one of the most famous quantum computing algorithms (i.e., Grover’s algorithm) and discussing the potential applications of this algorithm in power and energy systems, which can serve as one of the starting points for using Grover’s algorithm in power and energy systems.

In this paper, we study a quantum harmonic oscillator in a Mach-Zehnder-type interferometer which interacts with an environment, including electromagnetic oscillators. By solving the Lindblad master equation, we calculate the resulted interference pattern of the system. Interestingly, we show that even if one considers the decoherence effect, the system will keep some of its quantum properties. Indeed, the thermalization process does not completely leave the system in a classical state and the system keeps some of its coherency. Such an effect can be detected, when the frequency of the central system is high and the temperature is low, even with zero phase angle. This observation makes the quantum-to-classical transition remain as a vague notion in decoherence theory. By introducing an entropy measure, we express the influence of the bath as a maximization of system's entropy instead of classicalization of the state.

Recently, it has been suggested that ion channel selectivity filter may exhibit quantum coherence, which may be appropriate to explain ion selection and conduction processes. Potassium channels play a vital role in many physiological processes. One of their main physiological functions is the efficient and highly selective transfer of K+ ions through the membranes into the cells. To do this, ion channels must be highly selective, allowing only certain ions to pass through the membrane, while preventing the others. The present research is an attempt to investigate the relationship between hopping rate and maintaining coherence in ion channels. Using the Lindblad equation to describe a three-level system, the results in different quantum regimes are examined. We studied the distillable coherence and the second order coherence function of the system. The oscillation of distillable coherence from zero, after the decoherence time, and also the behavior of the coherence function clearly s...

We propose an experiment to investigate the possibility of long-distance thermodynamic relationships between two entangled particles. We consider a pair of spin-$$\frac{1}{2}$$ 1 2 particles prepared in an entangled singlet state in which one particle is sent to Alice and the other to her distant mate Bob, who are spatially separated. Our proposed experiment consists of three different setups: First, both particles are coupled to two heat baths with various temperatures. In the second setup, only Alice’s particle is coupled to a heat bath and finally, in the last setup, only Bob’s particle is coupled to a heat bath. We study the evolution of an open quantum system using the first law of thermodynamics based on the concepts of ergotropy, adiabatic work, and operational heat, in a quantum fashion. We analyze and compare ergotropy and heat transfer in three setups. Our results show that the heat transfer for each entangled particle is not independent of the thermalization process that ...

‎In this study‎, ‎we model a harmonic oscillator that enters an interferometer partially coupled to a thermal bath of oscillatory fields by employing a Brownian-type Lindblad master equation‎. ‎More specifically‎, ‎we investigate the dynamics and the variations of the thermodynamic quantities of the system at different temperatures‎. ‎We recognize that although the system can remain coherent during its interaction with the thermal bath in the low-temperature limit‎, ‎the system's entropy production violates the Clausius inequality‎. ‎Furthermore‎, ‎we argue that the system's coherence is the source of this violation‎, ‎rather than the entanglement degree of system-environment‎, ‎as reported in previous studies‎.

‎For quantum systems‎, ‎we expect to see classical behavior at the limit of large quantum numbers‎. ‎Hence‎, ‎we apply the Bohmian approach to describe the Earth evolution around the Sun‎. ‎We obtain possible trajectories of the Earth system with different initial conditions which converge to a certain stable orbit after a given time‎, ‎known as the Kepler orbit‎. ‎The trajectories are resulted from the guiding equation p = ∇S in Bohmian mechanics which relates the momentum of the system to the phase part of the wave function‎. ‎Except at some special situations‎, ‎Bohmian trajectories are not Newtonian in character‎. ‎We show that the classic behavior of the Earth can be interpreted as the consequence of the guiding equation at the limit of large quantum numbers‎.

In this study, we investigate a quantum harmonic oscillator interacting with a thermal bath of ocsillatory fields in a quantum circuit. By solving the Lindblad master equation, we calculate the resulted interference pattern from measuring the system in the momentum space. Interestingly, we show that even if one considers the decoherence effect, the system will keep some of its quantum properties. Indeed, the thermalization process does not completely leave the system in a classical state and the system remains coherent. Such an effect can be detected, when the frequency of the central system is high and the temperature is low. Then, by introducing an entropy measure, we express the influence of the bath as a maximization of the system's entropy through the decoherence process.