scholarly journals Understanding ghost interference

2016 ◽  
Vol 14 (06) ◽  
pp. 1640036 ◽  
Author(s):  
Tabish Qureshi ◽  
Pravabati Chingangbam ◽  
Sheeba Shafaq
Keyword(s):  
Wave Packet ◽  
Combined Effect ◽  
The Other ◽  
Entangled Photons ◽  
Path Information ◽  
Wave Packet Dynamics ◽  
Fringe Width ◽  
Different Color ◽  
Quantum Erasure ◽  
Double Slit

The ghost interference observed for entangled photons is theoretically analyzed using wave-packet dynamics. It is shown that ghost interference is a combined effect of virtual double-slit creation due to entanglement, and quantum erasure of which-path information for the interfering photon. For the case where the two photons are of different color, it is shown that fringe width of the interfering photon depends not only on its own wavelength, but also on the wavelength of the other photon which it is entangled with.

scholarly journals Three-slit ghost interference and non-local duality

2015 ◽  
Vol 13 (03) ◽  
pp. 1550022 ◽  
Author(s):  
Mohd Asad Siddiqui
Keyword(s):  
Wave Packet ◽  
The Other ◽  
Duality Relation ◽  
Entangled Photons ◽  
Local Duality ◽  
Interference Experiment ◽  
Wave Packet Dynamics ◽  
Non Local

A three-slit ghost interference experiment with entangled photons is theoretically analyzed using wave-packet dynamics. A non-local duality relation is derived which connects the path distinguishability of one photon to the interference visibility of the other.

Interaction-Free Which-Path Information and Some of Its Consequences

2001 ◽  
Vol 56 (1-2) ◽  
pp. 155-159
Author(s):  
Luiz Carlos Ryff
Keyword(s):  
Quantum Mechanics ◽  
Wave Packet ◽  
Single Particle ◽  
The Other ◽  
Quantum Nonlocality ◽  
Two Photon ◽  
Interference Fringes ◽  
Path Information ◽  
Other Hand ◽  
Pilot Wave

Abstract Let us consider a single particle in an interferometer. If one of the two possible paths is blocked and the particle is detected, we know that the particle has followed the path which is not blocked. This would be an interference-free "which-path" information experiment. However, we no longer have an interfe­rometer, since one path is blocked. An alternative is to interact with the particle, but this would change its momentum and as a consequence the interference fringes would disappear, as discussed by Feynman. We can also consider two particles entangled in direction. Knowing the path followed by one of the par­ticles, it is possible to know the path followed by the other. On the other hand, when this information is erased, interference can be observed. However, this is a two particle interference: no single particle inter­ference can be observed. Retrodiction experiments are also possible, but these are not conclusive. Here we propose a much less intuitive experiment in which, without blocking one path or directly interacting with the particle, it is possible to know the path which is being followed by the particle in the interferom­eter. According to quantum mechanics, this is sufficient to lose the single particle interference. The same idea can be used to test the local pilot wave interpretation, to test quantum nonlocality under new conditions, and to devise an interferometer for a two-photon wave packet. This last result strongly suggests that there must be some connection between the deBroglie wavelength of an N-particle wave packet and entanglement. Wavelength of an /V-particle Wave Packet.

THE EFFECT OF THE COUPLING BETWEEN VALENCE STATE B2Π AND RYDBERG STATE C2Π ON THE ABSORPTION SPECTRUM OF THE NO MOLECULE

2006 ◽  
Vol 05 (04) ◽  
pp. 743-752 ◽  
Author(s):  
YONG-CHANG HAN ◽  
SEN-MING WANG ◽  
KAI-JUN YUAN ◽  
SHU-LIN CONG
Keyword(s):  
Absorption Spectrum ◽  
Wave Packet ◽  
Excited States ◽  
Valence State ◽  
Rydberg State ◽  
The Other ◽  
Wave Packet Dynamics ◽  
Quantum Wave ◽  
Dynamics Method

The effect of the coupling between the valence state B 2Π and the Rydberg state C 2Π on the absorption spectrum of the NO molecule is studied by using the quantum wave packet dynamics method. The results show that the coupling between the valence state B 2Π and the Rydberg state C 2Π affects the C 2Π ← X 2Π absorption spectrum both in the intensity and on the location of spectrum peaks. The dynamics of the wave packet of the excited states is also described. One part of the wave packet evolves on the Rydberg state C 2Π and the other is trapped in the valence state B 2Π.

scholarly journals Wave packet dynamics in Yang-Mills theory

1995 ◽  
Vol 52 (4) ◽  
pp. 2402-2411 ◽  
Author(s):  
C. R. Hu ◽  
S. G. Matinyan ◽  
B. Müller ◽  
A. Trayanov ◽  
T. M. Gould ◽  
...  
Keyword(s):  
Wave Packet ◽  
Yang Mills ◽  
Wave Packet Dynamics

scholarly journals How to Erase Quantum Monogamy?

2021 ◽  
Vol 3 (1) ◽  
pp. 53-67
Author(s):  
Ghenadie Mardari
Keyword(s):  
Quantum System ◽  
Quantum Entanglement ◽  
The Other ◽  
Arrow Of Time ◽  
Quantum Level ◽  
Delayed Choice ◽  
Other Hand ◽  
The One ◽  
Quantum Erasure ◽  
Non Locality

The phenomenon of quantum erasure exposed a remarkable ambiguity in the interpretation of quantum entanglement. On the one hand, the data is compatible with the possibility of arrow-of-time violations. On the other hand, it is also possible that temporal non-locality is an artifact of post-selection. Twenty years later, this problem can be solved with a quantum monogamy experiment, in which four entangled quanta are measured in a delayed-choice arrangement. If Bell violations can be recovered from a “monogamous” quantum system, then the arrow of time is obeyed at the quantum level.

Wave Packet Dynamics in the Presence of a Conical Intersection

1997 ◽  
Vol 101 (19) ◽  
pp. 3454-3460 ◽  
Author(s):  
Paola Cattaneo ◽  
Maurizio Persico
Keyword(s):  
Wave Packet ◽  
Conical Intersection ◽  
Wave Packet Dynamics

scholarly journals Color-Binding Errors During Rivalrous Suppression of Form

2009 ◽  
Vol 20 (9) ◽  
pp. 1084-1091 ◽  
Author(s):  
Sang Wook Hong ◽  
Steven K. Shevell
Keyword(s):  
Binocular Rivalry ◽  
The Other ◽  
Physical Stimulus ◽  
Physical Stimulation ◽  
Eye Color ◽  
Neural Representations ◽  
Perceptual Alternation ◽  
Different Color ◽  
Binding Errors

How does a physical stimulus determine a conscious percept? Binocular rivalry provides useful insights into this question because constant physical stimulation during rivalry causes different visual experiences. For example, presentation of vertical stripes to one eye and horizontal stripes to the other eye results in a percept that alternates between horizontal and vertical stripes. Presentation of a different color to each eye (color rivalry) produces alternating percepts of the two colors or, in some cases, a color mixture. The experiments reported here reveal a novel and instructive resolution of rivalry for stimuli that differ in both form and color: perceptual alternation between the rivalrous forms (e.g., horizontal or vertical stripes), with both eyes' colors seen simultaneously in separate parts of the currently perceived form. Thus, the colors presented to the two eyes (a) maintain their distinct neural representations despite resolution of form rivalry and (b) can bind separately to distinct parts of the perceived form.

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