An experiment to throw more light on light

Ghose, Partha; Home, Dipankar; Agarwal, G. S.

doi:10.1016/0375-9601(91)90686-3

Cited by 44 publications

(55 citation statements)

References 11 publications

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“…An entirely different category of experiments are those involving the tunneling of single quanta. It has been shown using the quantum-optical formalism that a double-prism experiment involving the reflection and tunneling of single photons predicts anti-coincidences at two separate detectors, thus countering ME [8].…”

Section: Discussionmentioning

confidence: 95%

Quantum Superarrivals: Bohr's Wave-Particle Duality Revisted

2006

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The phenomenon of quantum superarrivals is manifested in the probabilities for Schrödinger wave packets scattered from perturbed potential barriers. We argue that both classical wave-like and classical particlelike properties can be exhibited in the same gedanken experimental setup for obtaining superarrivals through Schrödinger dynamics. An interesting question regarding the tenet of mutual exclusiveness, a la Bohr, of these two properties is raised in the context of this phenomenon.

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Section: Discussionmentioning

confidence: 95%

Quantum Superarrivals: Bohr's Wave-Particle Duality Revisted

2006

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“…[9] point out that the experiments of refs. [3,6,7] do not test wave and particle properties that are complementary and hence can draw no conclusion about the validity or invalidity of the "orthodox" Complementarity Principle.…”

Section: Welcher Weg Experiments That Question the Orthodox Complemenmentioning

confidence: 99%

“…[3,7], P wave does not commute with P 1 and P 2 and therefore the wave and particle properties are interferometer whose one arm contained a quantum dot (QD) with a nearby quantum point contact (QPC) [13,14]. The QD has a non-critical, peripheral role; it merely serves to trap an electron traveling that path long enough for the QPC to detect it.…”

Section: Existence Of An Interference Pattern At D (Sharp Wave Nature)mentioning

confidence: 99%

Welcher weg experiments, duality and the orthodox Bohr's Complementarity Principle

Bandyopadhyay

2000

Physics Letters A

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In its most orthodox form, Bohr's Complementarity Principle states that a quanton (a quantum system consisting of a Boson or Fermion) can either behave as a particle or as wave, but never simultaneosuly as both. A less orthodox interpretation of this Principle is the "duality condition" embodied in a mathematical inequality due to Englert [B-G Englert, Phys. Rev. Lett., 77, 2154Lett., 77, (1996] which allows wave and particle attributes to co-exist, but postulates that a stronger manifestation of the particle nature leads to a weaker manifestation of the wave nature and vice versa. In this Letter, we show that some recent welcher weg ("which path") experiments in interferometers and similar set-ups, that claim to have validated, or invalidated, the Complementarity Principle, actually shed no light on the orthodox interpretation. They may have instead validated the weaker duality condition, but even that is not completely obvious. We propose simple modifications to these experiments which we believe can test the orthodox Complementarity Principle and also shed light on the nature of wavefunction collapse and quantum erasure.

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“…1 and 2 conform to this idea of mutual exclusiveness because they cannot be performed simultaneously. However, a variant of the beam splitter experiment has recently been proposed (9) and performed (1°) which contradicts this tenet of mutual exclusiveness which is usually considered to be an indispensable part of BCP. Before we proceed to discuss this new experiment, we will take a close look at the conceptual framework of BCP in order to orient the discussions to a proper perspective.…”

Section: Source Mir~mentioning

confidence: 99%

“…When the gap is less than the wavelength, there is a possibility that light will tunnel across the gap and emerge from the second prism (registered by detector 2). Ghose, Home, and Agarwal (9) showed that the formalism of quantum optics predicts that the two detectors 1 and 2 should click in perfect anticoincidence for "ideal" single photon incident states. The key conceptual aspect of this experiment is that although tunnelling is exclusively a wave phenomenon, single photon states can also tunnel.…”

Section: The Two-prism Experimentsmentioning

confidence: 99%