scholarly journals Curved Interference Pattern Created by Photons Behaving as Particle---Double Slit Experiment Still Has Much to Offer

2021 ◽  
Author(s):  
Hui Peng
Keyword(s):  
Interference Pattern ◽  
Wave Theory ◽  
Quantum Probability ◽  
The Novel ◽  
Physics First ◽  
Airy Beam ◽  
Comprehensive Information ◽  
Classical Wave ◽  
Double Slit Experiment ◽  
Double Slit

Abstract Young’s double slit experiments, which represent the mystery of quantum mechanics, have been described by either the classical wave, or quantum probability waves or pilot waves. Recently, the novel experiments show that the interference patterns of the double slit/cross-double slit experiments may be curved. The previous phenomena of the light bending contain the gravity bending and Airy beam curving transversely. The curved Airy beam is interpreted by the quantum Schrödinger’s wave equation and electromagnetic wave theory. To study the curved interference patterns of the comprehensive double slit experiments, we study the underlying physics first, namely, to study whether the light beam/photons behave as wave or as particle before forming the curved interference pattern. In this article, the comprehensive double slit experiments are performed, which show: (1) the fringes of the curved interference pattern are created independently and may be create partially; (2) the longitudinal shield and the metal tube inserted between the slide and the detector has no effect on the interference pattern. The experimental observations suggest that, before forming the curved interference pattern on the detector, photons behave as particles, which can be referred as “wave-particle-coexistence”. The phenomena provide the comprehensive information/data for the theoretical study.

scholarly journals Particle Nature of Photons, Straight Diffraction Pattern and Curved Diffraction Pattern Emerging in Same Grating Experiment

2021 ◽  
Author(s):  
Hui Peng
Keyword(s):  
Diffraction Pattern ◽  
The Novel ◽  
Straight Line ◽  
Comprehensive Information ◽  
Wave Particle Duality ◽  
Diffraction Patterns ◽  
Particle Nature ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract The particle nature of the photons was experimentally confirmed. The static straight line diffraction pattern of the normal grating experiments has been shown experimentally. The phenomenon of the dynamic curved diffraction pattern of the grating experiment have been shown in separate experiments. In this article, the new experiments are proposed and performed, which show that the particle nature of the photons, the static straight line diffraction patterns, and the dynamic curved, expanded and inclined diffraction patterns co-exist in the same grating experiment simultaneously. The novel phenomena make the Feynman’s mystery of the normal double slit experiment more mysterious, violate Bohr’s complementarity principle, and provide comprehensive information/data for studying the wave-particle duality and developing new theoretical model.

Particle Nature of Photons, Normal Diffraction Pattern and Curved Diffraction Pattern Emerging in Same Experiment --- Double-Slit Experiment Still Has Much to Offer

2021 ◽  
Author(s):  
Hui Peng
Keyword(s):  
Diffraction Pattern ◽  
The Novel ◽  
Straight Line ◽  
Comprehensive Information ◽  
Wave Particle Duality ◽  
Diffraction Patterns ◽  
Particle Nature ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract The particle nature of the photons was experimentally confirmed. The static straight line diffraction pattern of the normal grating experiments has been shown experimentally. The phenomenon of the dynamic curved diffraction pattern of the grating experiment have been shown in separate experiments. In this article, the new experiments are proposed and performed, which show that the particle nature of the photons, the static straight line diffraction patterns, and the dynamic curved, expanded and inclined diffraction patterns co-exist in the same grating experiment simultaneously. The novel phenomena make the Feynman’s mystery of the normal double slit experiment more mysterious, violate Bohr’s complementarity principle, and provide comprehensive information/data for studying the wave-particle duality and developing new theoretical model. The double-slit experiment still has much to offer.

scholarly journals Comprehensive Double Slit Experiments-Exploring Experimentally Mystery of Double Slit

2021 ◽  
Author(s):  
Hui Peng
Keyword(s):  
Quantum Mechanics ◽  
Quantum Probability ◽  
Laser Source ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract Young’s double slit experiments, which represent the mystery of quantum mechanics, have been interpreted by quantum probability waves and pilot waves. In this article, to study the mystery, we proposed and carried out comprehensive double slit experiments, which demonstrate two postulates related to double slit experiments: (1) before striking at the slide of a double slit, photons emitted by a laser source behave as particles; (2) before striking at the detector, photons behave as particles. Progress in studying the mystery of the double slit experiment is presented.

Exploring the Phenomena of a Quantum Eraser in Young’s Double Slit Experiment

2020 ◽  
Author(s):  
Alexander Shaw ◽  
Trevor Vrckovnik ◽  
Billy Thorpe ◽  
Christian Sprang
Keyword(s):  
Interference Pattern ◽  
Quantitative Result ◽  
Bright Spot ◽  
Original Experiment ◽  
Quantum Eraser ◽  
Final Measurement ◽  
Pass Through ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

This experiment explores the quantum phenomenon known as the Quantum Eraser, using a variation of Young’s Double Slit experiment. Young’s Double Slit experiment demonstrates that light acts as a wave by creating an interference pattern when diffracted through two slits. If one measures which of the two slits the photons pass through, then the interference pattern is replaced by a single bright spot, as would be expected for particle-like behaviour. The “Quantum Eraser” eliminates the measurement on the photons, thereby reintroducing the interference pattern observed in Young’s original experiment. The experiment’s first stage saw Young’s Double Slit experiment recreated and an interference pattern was observed. Upon adding two orthogonally polarized filters, the photon’s path was measured, and the interference pattern was removed. By then adding a third filter which was polarized 45O relative to both other polarisers, the interference pattern was somewhat restored. For each experiment, the heights of the peaks in the interference patterns were compared to each other to examine the quality of the reproduced interference pattern based on the original double slit interference pattern. This comparison gave a quantitative result that demonstrated that the Quantum Eraser was able to restore the interference pattern to within 5 standard errors, thereby exemplifying the effect that changing the measurement conditions affects the final measurement.

Is the Uncertainty Relation at the Root of all Mutual Exclusiveness?

1997 ◽  
Vol 52 (5) ◽  
pp. 398-402 ◽  
Author(s):  
D. Sen ◽  
A. N. Basu ◽  
S. Sengupta
Keyword(s):  
Interference Pattern ◽  
Uncertainty Principle ◽  
Uncertainty Relation ◽  
Quantum Mechanical ◽  
Complementarity Principle ◽  
Conventional Analysis ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract It is argued that two distinct types of complementarity are implied in Bohr's complementarity principle. While in the case of complementary variables it is the quantum mechanical uncertainty relation which is at work, the collapse hypothesis ensures this exclusiveness in the so-called wave-particle complementarity experiments. In particular it is shown that the conventional analysis of the double slit experiment which invokes the uncertainty principle to explain the absence of the simultaneous knowledge of the which-slit information and the interference pattern is incorrect and implies consequences that are quantum mechanically inconsistent.

scholarly journals Light Strands not Wave Interference: Clarification of the Double Slit Experiment

2021 ◽  
Author(s):  
S. Dutt ◽  
N. Dutt ◽  
A. Dutt
Keyword(s):  
Free Space ◽  
Interference Fringe ◽  
Light Propagation ◽  
Wave Theory ◽  
Wave Interference ◽  
Fringe Patterns ◽  
Visualization Techniques ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract Objective Modern understanding of light has fluctuated between particle and wave theory. The classic double slit experiment provided crucial support of wave theory with its description of wave interference fringe patterns. To our knowledge, no significant study has been performed on light propagation in free space after exiting the slit. To further understand the double slit results we analyzed light behavior in free space using novel visualization techniques.Methods A micro-particle environment was developed that remained transparent to visible light. Coherent light was observed in this environment in settings of diffraction, refraction, and reflection.Results Experimental generation of distinct light strands after diffraction through double slits is visualized. Definitive images of discrete light strands, not waves, were noted as light propagated through free space. Light strands were visualized directly creating the pseudo-interference fringe pattern, refuting the concept of wave interference.Conclusions Novel generation and visualization of light strands confirms the particle theory of light and counters two hundred years of wave doctrine. The finding that diffractive fringe patterns and other observations of light are due to the phenomena of discrete radiating strands, not wave interference, will have implications in physics, quantum mechanics, and technology.

Wave Theory

2020 ◽  
pp. 50-70
Author(s):  
M. Suhail Zubairy
Keyword(s):  
Quantum Mechanics ◽  
Superposition Principle ◽  
Wave Theory ◽  
Quantum Mechanical ◽  
Wave Particle Duality ◽  
Basic Characteristics ◽  
The Waves ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

One of the earliest and most important tenets of quantum mechanics is the wave-particle duality: light behaves sometimes like a wave and at other times as particle and similarly an electron can also behave both like a particle and as a wave. When the formal laws of quantum mechanics are formulated, the central quantity that describes the particles is the wave function. This points to the need for a good understanding of the properties of the waves. This chapter introduces the concepts and most essential applications that are required to follow the discussion of quantum mechanical laws and systems. The basic characteristics of the waves, such as the superposition principle are presented, and the interference and the diffraction phenomena are discussed. The Young’s double slit experiment in analysed and the formation of interference pattern is explicitly shown. The Rayleigh criterion for the microscopic resolution is also derived.

Fringe visibility of exotic trajectories for matter waves in a double-slit experiment

2019 ◽  
Vol 34 (28) ◽  
pp. 1950233
Author(s):  
C. H. S. Vieira ◽  
H. A. S. Costa ◽  
Gustavo de Souza ◽  
Marcos Sampaio ◽  
I. G. da Paz
Keyword(s):  
Interference Pattern ◽  
Relative Intensity ◽  
Time Of Flight ◽  
Fringe Visibility ◽  
Matter Waves ◽  
Gouy Phase ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

We theoretically study the fringe visibility of exotic looped trajectories in double-slit experiments with matter waves. We consider the relative intensity at [Formula: see text] as a function of the time-of-flight from the double-slit to the screen inside the interferometer. This allows us to define a fringe visibility associated with the contribution to the interference pattern given by exotic looped trajectories. We demonstrate that the Sorkin parameter is given in terms of this visibility and of the axial phases which include the Gouy phase. Thus, the effect of exotic looped trajectories can be attested by measuring deviations from unity for the fringe visibility. We show that the effect of exotic trajectories can be increased by adjusting the parameters of the double-slit apparatus in the Fresnel regime.

scholarly journals Straight Interference Pattern to Curved-Expanded-Inclined Interference Pattern---Static to Dynamic Double Slit/Cross-Double Slit Experiments

2021 ◽  
Author(s):  
hui peng
Keyword(s):  
Interference Pattern ◽  
Inclination Angle ◽  
Rotation Axis ◽  
Left Hand ◽  
Right Hand ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Abstract In this article, we show three novel universal phenomena of the double slit, cross-double slit and grating experiments: (1) the interference patterns can curve; (2) the interference patterns can expand; and (3) the interference patterns created by the tilt double slits can inclined to the axis that is perpendicular to the axis the diaphragm rotates around. The directions of the patterns curved towards are determined by how the diaphragm rotates, i.e., clockwise or counterclockwise. To determine the directions, we proposed Right-hand rule and Left-hand rule. The magnitudes of three phenomena depend on the direction of the rotation and two angles: the original angle of the double slit on the diaphragm relative to the rotation axis and the angle the diaphragm rotates. We derived the formular to calculate the expansion of the patterns, and the formular to calculate the inclination angle of patterns. In the regular double slit experiment, photons need to know whether there is a double slit or not. Now, photons need to know: (1) the orientation of the double slit; (2) which axis the diaphragm rotating around; (3) the direction of rotation, i.e., clockwise or counterclockwise; (4) the angle of the rotation. The Feynman’s mystery of the double slit is more mysterious.

scholarly journals Double Slit to Cross Double Slit to Comprehensive Double Slit Experiments

2021 ◽  
Author(s):  
Hui Peng
Keyword(s):  
Quantum Mechanics ◽  
Wave Theory ◽  
Quantum Probability ◽  
Complementarity Principle ◽  
Wave Particle Duality ◽  
The Cross ◽  
Double Slit

Abstract Young’s double slit experiments, which represent the mystery of quantum mechanics, have been interpreted by quantum probability waves and de Broglie-Bohm’s trajectory/pilot waves. To study in detail, the double slit experiments are extended to the cross double slit experiments. We argue that an interpretation must be able to explain all of the double slit and cross double slit experiments consistently. To test the interpretations, the comprehensive double slit experiments have been performed, which challenge both the wave interpretation and the trajectory interpretation. The cross double slit experiments and comprehensive double slit experiments provide a new tool for studying the mystery of double slit, wave-particle duality, complementarity principle, wave theory and trajectory theory. In this article, we review the cross double slit experiments and comprehensive double slit experiments, and report new experiments.

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