Landauer’s Principle in a Quantum Szilard Engine without Maxwell’s Demon

Aydin, Alhun; Şişman, Altuğ; Kosloff, Ronnie

doi:10.3390/e22030294

Cited by 30 publications

(32 citation statements)

References 75 publications

(96 reference statements)

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“…Actually, the Landauer principle converts the information into a physical value; Landauer himself stated that the “information is physical” [ 26 ]. The precise meaning, universality, evaluation, and interpretation of the Landauer principle were recently subjected to intensive and sometimes stormy scientific discussion [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. Whatever the precise meaning of the Landauer Principle, it contributes to the re-construction of the fundamentals of physics on the informational basis, suggested by Wheeler in [ 40 ] and developed in [ 41 , 42 , 43 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…It immediately follows from the Landauer Principle that the temperature of the system is the only physical value defining the energy cost of isothermal erasure of a single bit of information [ 26 , 27 , 28 , 37 , 38 ]. Again, recall that the temperature defined with Equation (9) is introduced not only for large Avogadro-number-scale systems but also for systems built of an arbitrary number of particles [ 21 , 22 ], and even for the single-particle systems, as it is well-illustrated by the minimal Szilard Engine, however classical [ 7 , 44 , 45 ], quantum [ 8 , 39 ], or relativistic. This means that the mass-equivalent of the single bit of information may be introduced, which is also completely defined by the temperature of the system [ 27 , 31 , 32 , 33 , 34 , 35 , 36 , 46 ].…”

Section: Resultsmentioning

confidence: 99%

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What Is Temperature? Modern Outlook on the Concept of Temperature

Bormashenko

2020

Entropy

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The meaning and evolution of the notion of “temperature” (which is a key concept for the condensed and gaseous matter theories) are addressed from different points of view. The concept of temperature has turned out to be much more fundamental than conventionally thought. In particular, the temperature may be introduced for systems built of a “small” number of particles and particles at rest. The Kelvin temperature scale may be introduced into quantum and relativistic physics due to the fact that the efficiency of the quantum and relativistic Carnot cycles coincides with that of the classical one. The relation of temperature with the metrics of the configurational space describing the behavior of systems built from non-interacting particles is demonstrated. The role of temperature in constituting inertia and gravity forces treated as entropy forces is addressed. The Landauer principle asserts that the temperature of a system is the only physical value defining the energy cost of the isothermal erasure of a single bit of information. The fundamental role of the temperature of the cosmic microwave background in modern cosmology is discussed. The range of problems and controversies related to the negative absolute temperature is treated.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

What Is Temperature? Modern Outlook on the Concept of Temperature

Bormashenko

2020

Entropy

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“…7, that denotes the probability for the particle to end in the left compartment when the wall is removed and slowly reintroduced at position . The saturation elbows are quantum effects that are explained physically in References [66,67].…”

Section: Reference Quantum Szilard Enginementioning

confidence: 99%

Entropy Distribution in a Quantum Informational Circuit of Tunable Szilard Engines

Diazdelacruz

2019

Entropy

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This paper explores the possibility of extending the existing model of a single-particle Quantum Szilard Engine to take advantage of some features of quantum information for driving typical mechanical systems. It focuses on devices that output mechanical work, extracting energy from a single thermal reservoir at the cost of increasing the entropy of a qubit; the reverse process is also considered. In this alternative, several engines may share the information carried by the same qubit, although its interception will prove completely worthless for any illegitimate user. To this end, multi-partite quantum entanglement is employed. Besides, some changes in the cycle of the standard single-particle Quantum Szilard Engine are described, which lend more flexibility to meeting additional requirements in typical mechanical systems. The modifications allow having qubit input and output states of adjustable entropy. This feature enables the possibility of chaining the qubit between engines so that its output state from one can be used as an input state for another. Finally, another tweak is presented that allows for tuning the average output force of the engine.

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“…7 yields the non-trivial equation defining the averaged metrics of the configurational space: himself stated that the "information is physical" [24]. The precise meaning, universality, evaluation and the interpretation of the Landauer principle were subjected to the intensive and sometimes stormy scientific discussion recently [26][27][28][29][30][31][32][33][34][35][36]. Whatever is the precise meaning of the Landauer Principle, it contributes to the re-construction of the fundamentals of physics on the informational basis, suggested by John Archibald…”

Section: Introductionmentioning

confidence: 99%

What Is the Temperature? Modern Outlook on the Concept of Temperature

Bormashenko¹

2020

Preprint

View full text Add to dashboard Cite

The meaning and evolution of the notion of “temperature” (which is a key concept for the condensed and gaseous matter theories) is addressed from the different points of view. The concept of temperature turns out to be much more fundamental than it is conventionally thought. In particular, the temperature may be introduced for the systems built of “small” number of particles and particles in rest. The Kelvin temperature scale may be introduced into the quantum and relativistic physics due to the fact, that the efficiency of the quantum and relativistic Carnot cycles coincides with that of the classical one. The relation of the temperature to the metrics of the configurational space describing the behavior of system built from non-interacting particles is demonstrated. The Landauer principle asserts that the temperature of the system is the only physical value defining the energy cost of isothermal erasing of the single bit of information. The role of the temperature the cosmic microwave background in the modern cosmology is discussed.

show abstract

Landauer’s Principle in a Quantum Szilard Engine without Maxwell’s Demon

Cited by 30 publications

References 75 publications

What Is Temperature? Modern Outlook on the Concept of Temperature

What Is Temperature? Modern Outlook on the Concept of Temperature

Entropy Distribution in a Quantum Informational Circuit of Tunable Szilard Engines

What Is the Temperature? Modern Outlook on the Concept of Temperature

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