scholarly journals Optical beam splitter, Mach–Zehnder interferometer and the delayed choice issue

2021 ◽  
Vol 127 (9) ◽  
Author(s):  
Dietrich von der Linde
Keyword(s):  
Choice Experiment ◽  
Quantum Physics ◽  
Beam Splitter ◽  
Thought Experiment ◽  
Optical Beam ◽  
Zehnder Interferometer ◽  
Beam Splitters ◽  
Delayed Choice ◽  
Wave Particle Duality ◽  
Mach Zehnder Interferometer

AbstractJohn Wheeler's delayed choice thought experiment is often invoked in discussions of the wave-particle duality of quantum physics. Every so often interpretations are offered that do not restrict to straight physics. The key element of the 'Gedankenexperiment' is a Mach–Zehnder interferometer composed of two optical beam splitters. The quantum description of these devices and the treatment of delayed choice experiment in the framework of quantum optics are discussed here.

scholarly journals A generalized multipath delayed-choice experiment on a large-scale quantum nanophotonic chip

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaojiong Chen ◽  
Yaohao Deng ◽  
Shuheng Liu ◽  
Tanumoy Pramanik ◽  
Jun Mao ◽  
...  
Keyword(s):  
Choice Experiment ◽  
Quantum Physics ◽  
Large Scale ◽  
Single Photon ◽  
Delayed Choice ◽  
Wave Nature ◽  
Wave Particle Duality ◽  
Central Tenet ◽  
Particle Nature ◽  
Quantum Technology

AbstractBohr’s complementarity is one central tenet of quantum physics. The paradoxical wave-particle duality of quantum matters and photons has been tested in Young’s double-slit (double-path) interferometers. The object exclusively exhibits wave and particle nature, depending measurement apparatus that can be delayed chosen to rule out too-naive interpretations of quantum complementarity. All experiments to date have been implemented in the double-path framework, while it is of fundamental interest to study complementarity in multipath interferometric systems. Here, we demonstrate generalized multipath wave-particle duality in a quantum delayed-choice experiment, implemented by large-scale silicon-integrated multipath interferometers. Single-photon displays sophisticated transitions between wave and particle characters, determined by the choice of quantum-controlled generalized Hadamard operations. We characterise particle-nature by multimode which-path information and wave-nature by multipath coherence of interference, and demonstrate the generalisation of Bohr’s multipath duality relation. Our work provides deep insights into multidimensional quantum physics and benchmarks controllability of integrated photonic quantum technology.

Polarization beam splitter based on photonic crystal self-collimation Mach–Zehnder interferometer

2011 ◽  
Vol 284 (1) ◽  
pp. 490-493 ◽  
Author(s):  
Xiyao Chen ◽  
Zexuan Qiang ◽  
Deyin Zhao ◽  
Yufei Wang ◽  
Hui Li ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Zehnder Interferometer ◽  
Mach Zehnder Interferometer

scholarly journals Wilhelm Wien’s Photons Creating the BohEmian Pilot Wave for the Guiding of the Individual Huygens - de Broglie Particles on the Helical Path Governed by the Newton - Bohm Evolute (the Bohmian Pilot Wave) through the Young - Feynman Double - Slit Barrier.

2019 ◽  
Vol 11 (5) ◽  
pp. 10
Author(s):  
Jiri Stavek
Keyword(s):  
Interference Pattern ◽  
Beam Splitter ◽  
Zehnder Interferometer ◽  
Pilot Wave ◽  
System Temperature ◽  
Experimental Possibility ◽  
Diffraction Patterns ◽  
The Individual ◽  
Double Slit ◽  
Mach Zehnder Interferometer

In our approach we have combined knowledge of Old Masters (working in this field before the year 1905), New Masters (working in this field after the year 1905) and Dissidents under the guidance of Louis de Broglie and David Bohm. In our model the quantum particle is represented as the Huygens-de Broglie’s particle on the helical path (full wave) guided by the Newton-Bohm entangled helical evolute (Bohmian Pilot Wave). These individual Huygens - de Broglie particles in the Young - Feynman double - slit experiment react with Wilhelm Wien’s photons that are always present inside of the apparatus (Wien’s displacement law). Wilhelm Wien’s photons form collectively the Wien filter guiding the Huygens - de Broglie particles through the double - slit barrier towards a detector (BohEmian Pilot Wave). The interplay of those events creates the observed interference pattern. In the very well-known formula describing the intensity of double-slit diffraction patterns we have newly introduced the concept curvature κ of the Huygens - de Broglie particle and thus giving a physical interpretation for the Newton - Bohm guiding wave (the Bohmian Pilot Wave): for photons κ = π/λ, for electrons κ = 2π/λ. Moreover, we have introduced into that formula the expression λmax from the Wien’s displacement law to describe geometry of the double - slit barrier. We propose to modify the value λmax by the change of the system temperature. There is a second experimental possibility - we can insert into those slits filters to remove Wien’s photons while the Huygens - de Broglie particles continue towards a detector - we should observe the particle behavior. The similar situation might occur in the Mach - Zehnder interferometer. In this case the individual Huygens - de Broglie particle reacts in the first beam splitter with the Wien photon: the Huygens - de Broglie particle goes through one path while the Wien photon goes through the second path. In the second beam splitter they interact again and create the interference pattern on one detector. We can experimentally modify the resulting interference pattern in the Mach - Zehnder interferometer - by the temperature change of the system or by inserting filters to remove Wien’s photons from one or both paths. Can it be that Nature cleverly creates those interference patterns while the Bohmian pilot wave and the BohEmian pilot wave are hidden in plain sight? We want to pass this concept into the hands of Readers of this Journal better educated in the Mathematics and Physics.

scholarly journals Quantum non-demolition measurement in the interferometer

2020 ◽  
Vol 9 (1) ◽  
pp. 7
Author(s):  
Dmitri Khokhlov
Keyword(s):  
Single Photon ◽  
Zehnder Interferometer ◽  
Kerr Medium ◽  
Beam Splitters ◽  
Polarizing Beam Splitters ◽  
Mach Zehnder Interferometer

The schemes of the arrangements based on the Mach-Zehnder interferometer and the interferometer with two polarizing beam splitters are considered. The interferometers in both the schemes are equipped with some devices, creating a Kerr medium, to perform the quantum non-demolition measurement of a single photon. Such a device gives which way information of the photon while preserving the work of the interferometer.

scholarly journals Correction to: Dynamic Mach–Zehnder interferometer based on a Michelson configuration and a cube beam splitter system

2019 ◽  
Vol 26 (6) ◽  
pp. 719-719
Author(s):  
A. Montes Pérez ◽  
G. Rodríguez-Zurita ◽  
V. H. Flores-Muñoz ◽  
G. Parra-Escamilla ◽  
D. I. Serrano-García ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Zehnder Interferometer ◽  
Cube Beam Splitter ◽  
Mach Zehnder Interferometer
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