Early Mental Models

Hentschel, Klaus

doi:10.1007/978-3-319-95252-9_4

Cited by 4 publications

(10 citation statements)

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“…The reduction of the experimental fringe width (FWHM) with 𝑁 relative to the classical width according to (15) is shown in Fig. 4 for 𝑁 ≤ 4 (black points).…”

Section: Fringe Width Reduction Through Multi-photon Interferencementioning

confidence: 97%

“…While the detection process is left unspecified in the classical wave formulation, which simply predicts the existence of a continuous macroscopic interference pattern in space, it plays a crucial role in quantum optics. Although the concept or nature of a photon remains controversial among fundamentalists [14,15], it is the detection process that allows us to state with confidence that we have observed a photon. Photon detection is based on the local destruction of a photon and creation of a photoelectron that gives rise to a detector click.…”

Section: Introductionmentioning

confidence: 99%

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Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference

Stohr,

Kim,

Rotermund

et al. 2024

Preprint

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We demonstrate theoretically and experimentally how the diffraction and interferometric resolution limit for single-mode coherent cw laser light can be overcome by multi-photon interference. By use of a Mach-Zehnder interferometer, operated in the single input and single or double output port geometries, we observe a fringe width reduction of the conventional interference pattern, predicted by the wave or single photon quantum theory, by a factor of up to $1/\sqrt{2N}$ through coincident detection of N=2,3,4 photons. Our scheme does not require squeezed or entangled light to overcome the standard quantum limit and greatly facilitates precision interferometry experiments.

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“…The reduction of the experimental fringe width (FWHM) with 𝑁 relative to the classical width according to (15) is shown in Fig. 4 for 𝑁 ≤ 4 (black points).…”

Section: Fringe Width Reduction Through Multi-photon Interferencementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference

Stohr,

Kim,

Rotermund

et al. 2024

Preprint

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“…We have been introducing ad hoc "contextual interpretations" for various quantum mathematical equations to explain the meaning of the measurable data. Relevant to our problem for this paper are -Wave-Particle Duality (WPD) and the Wave Packet Reduction (WPR) [3][4][5][6][7][8]. A causal understanding of WPD and WPR has become confusing because of the following two reasons.…”

Section: Introductionmentioning

confidence: 99%

Resolving wave-particle duality could accelerate the mass production of quantum computers

Roychoudhuri,

Prasad

2024

Quantum Computing, Communication, and Simulation IV

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Quantum computers, hypothesized in 1980s, use concepts of superposition and entanglement phenomena. Although theoretical propositions and associated search algorithms for accurate measurements are being generated, the development of practical quantum computers themselves are advancing very slowly requiring enormous time and investments. The underlying concepts of a quantum computer are not new to the optical domain. However, the crucial enabling concepts of Entanglement and Superposition Principle are remaining clouded under the unresolved postulates, Wave-Particle Duality (WPD), and Wave Packet Reduction (WPR), implicating incompleteness in the interpretations of the mathematical formalism behind Quantum Mechanics. The WPD debate started during late1600 between Newton and Huygens. Young's resolution of WPD through his double-slit experiment in 1802 was effectively overturned by Einstein's interpretation of photoelectric effect as due to "indivisible light quanta". However, Einstein disowned his "light quanta" postulate shortly before his death in1955, even though it had earned him the Nobel Prize. We resolve WPD by synthesizing Newton's and Maxwell's concepts and assume atoms do emit quanta but propagate as time-finite exponential pulses. This assumption also resolves WPR for light-matter interaction with the assumption that Schrodinger's ψ represents atom's internal dipolar amplitude stimulations. This over-turns Born's interpretation that ψ only represents the abstract mathematical probability amplitude, rather than the physical "internal amplitude stimulation" of the quantum entity. However, our concept of atomic pulse emission forces us to re-derive the expression for the N-slit grating-spectrometer response since the classical derivation uses CW light, which does not exist. This pulsespectrometric response function strengthens our postulate since the grating response to the exponential pulse appears to be the convolution of a Lorentzian spectrum with the classical CW response function of the grating. The Fourier Transform of an exponential function is Lorentzian and QM predicts spontaneous emission line width to be Lorentzian. Then, conceptually one can extend the grating-expression (with N=2) to get the double-slit pattern. This approach preserves the classical causality that each of the two slits, like the N-signals out of a grating, are physically real and jointly stimulate the quantum detector array at the far field to generate the "Local" cosine fringes. The detector array executes the square modulus operation on its imposed dipolar amplitude stimulation and absorbs the necessary energy to fill up their quantum cups. Hence the double-slit pattern must also be "Local", just as the N-slit grating spectrum is generated locally at the exit spectral-plane of the spectrometer. This removes the need to believe that "single photons" mysteriously generate the double slit pattern.

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“…Sometimes it is seen as a central topic in quantum physics, and thus crucial in teaching quantum physics (see e.g., Ayene et al, 2019;Bøe & Viefers, 2023). However, even when it is noted that such a stance is no longer tenable but rather a remnant from the history of quantum physics (see e.g., Hentschel, 2018), wave-particle duality is nevertheless seen as a suitable didactic starting point for a learner in constructing mental models of a new quantum entity (Bungum et al, 2018;Cheong & Song, 2014;Henriksen et al, 2018). The science education research including wave-particle duality has been comprehensively summarized in many recent studies (Cheong & Song, 2014;Krijtenburg-Lewerissa et al, 2017) whose main findings are not reiterated here.…”

Section: Introductionmentioning

confidence: 99%

Argument structure in explaining wave-particle duality of photons in double-slit experiment

Koponen,

Vuola,

Nousiainen

2024

LUMAT

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We analyze here how pre-service teachers explicate their views about the wave-particle duality of photons and what role it plays in their arguments supporting the quantum nature of light. The data for the analysis is provided by 12 written reports about the double-slit experiment with feeble light. The analysis is based on constructing semantic networks corresponding to pre-service teachers’ written texts. Contingency-like associative correlation between word-pairs is used to differentiate between word-pairs, where associations of two terms or words is systematic. Such associations indicate connections, which are significant for key term vocabularies in construction of inferences and arguments. Based on that information of the key vocabulary we then construct the structure of pre-service teachers’ argument for the nature of the photon and its wave-particle duality, in the form of directed argument graphs (DAGs). The results show that argument structures in four to six out of 12 cases meet the goals set for pre-service teacher education. In these cases, experimental aspects and wave-particle duality play an important role in the pre-service teachers’ argument and its structure.

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Early Mental Models

Cited by 4 publications

References 0 publications

Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference

Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference

Resolving wave-particle duality could accelerate the mass production of quantum computers

Argument structure in explaining wave-particle duality of photons in double-slit experiment

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