Wave–particle duality of C60 molecules

  title={Wave–particle duality of C60 molecules},
  author={Markus Arndt and Olaf Nairz and Julian Vos-Andreae and Claudia Keller and Gerbrand van der Zouw and Anton Zeilinger},
Quantum superposition lies at the heart of quantum mechanics and gives rise to many of its paradoxes. Superposition of de Broglie matter waves has been observed for massive particles such as electrons, atoms and dimers, small van der Waals clusters, and neutrons. But matter wave interferometry with larger objects has remained experimentally challenging, despite the development of powerful atom interferometric techniques for experiments in fundamental quantum mechanics, metrology and lithography… 

Quantum interference experiments with large molecules

Wave–particle duality is frequently the first topic students encounter in elementary quantum physics. Although this phenomenon has been demonstrated with photons, electrons, neutrons, and atoms, the

Quantum interference of large organic molecules

It is shown that even complex systems, with more than 1,000 internal degrees of freedom, can be prepared in quantum states that are sufficiently well isolated from their environment to avoid decoherence and to show almost perfect coherence.

Foundation experiments in quantum atom optics with ultracold metastable helium

The field of atom optics has progressed rapidly over the past 20 years since the realisation of Bose-Einstein condensation, such that the wave behaviour of atomic gases is now routinely demonstrated.

Particle diffraction studied using quantum trajectories

Diffraction and interference of matter waves are key phenomena in quantum mechanics. Here we present some results on particle diffraction in a wide variety of situations, ranging from simple slit

Engineering the quantum transport of atomic wavefunctions over macroscopic distances

How far can you stretch an atomic wavefunction? An experiment demonstrates that the wavefunction of an ensemble of ultracold atoms trapped in an optical lattice can be reversibly expanded and shrunk

Matter-wave interference of particles selected from a molecular library with masses exceeding 10,000 amu.

It is demonstrated how synthetic chemistry allows us to prepare libraries of fluorous porphyrins which can be tailored to exhibit high mass, good thermal stability and relatively low polarizability, which allows for successful superposition experiments with selected species from these molecular libraries in a quantum interferometer, which utilizes the diffraction of matter-waves at an optical phase grating.

First observation of antimatter wave interference

In 1924 Louis de Broglie introduced the concept of wave-particle duality: the Planck constant $h$ relates the momentum $p$ of a massive particle to its de Broglie wavelength $\lambda=h/p$. The

Quantum Interference and Superposition

Apart from technological applications, interference experiments with massive particles in ample range of masses (electrons, neutrons, atoms, small clusters, organic molecules, or even Bose-Einstein

A Kapitza–Dirac–Talbot–Lau interferometer for highly polarizable molecules

Research on matter waves is a thriving field of quantum physics and has recently stimulated many investigations with electrons1, neutrons2, atoms3, Bose-condensed ensembles4, cold clusters5 and hot

Decoherence of matter waves by thermal emission of radiation

Good quantitative agreement is found between the experimental observations and microscopic decoherence theory of matter wave interferometer experiments in which C70 molecules lose their quantum behaviour by thermal emission of radiation.



Towards Coherent Matter Wave Optics with Macromolecules

While in the last decade atom interferometry[1] has become a rapidly expanding field, coherent de Broglie optics with large molecules has still remained completely unexplored. We propose that

Photon scattering from atoms in an atom interferometer: Coherence lost and regained.

Experiments are discussed here in which this entanglement results from the elastic scattering of a photon from an atom initially in a state with extended spatial coherence inside an atom interferometer.

The emergence of classical properties through interaction with the environment

The dependence of macroscopic systems upon their environment is studied under the assumption that quantum theory is universally valid. In particular scattering of photons and molecules turns out to

The Environment, Decoherence and the Transition from Quantum to Classical

Quantum mechanics works exceedingly well in all practical applications. No example of conflict between its predictions and experiment is known. Without quantum physics we could not explain the

Decoherence and the Appearance of a Classical World in Quantum Theory, second edition

1 Introduction.- 2 Basic Concepts and Their Interpretation.- 3 Decoherence Through Interaction with the Environment.- 4 Decoherence in Quantum Field Theory and Quantum Gravity.- 5 Consistent

Epistemological and experimental perspectives on quantum physics

Editorial. Articles. Philosophical and Experimental Perspectives on Quantum Physics (6th Vienna Circle Lecture A. Shimony. Neutron Quantum Experiments and their Epistemological Impact H. Rauch. The

"Heisenberg microscope" decoherence atom interferometry.

  • ClauserLi
  • Physics
    Physical review. A, Atomic, molecular, and optical physics
  • 1994
Wave interference fringes are revealed by their selective destruction and ac-modulated laser light passes through the interferometer, is scattered by atoms at one velocity, and destroys, and thereby reveals via the ac modulation, the associated high-frequency fringe contribution.

He-atom diffraction from nanostructure transmission gratings: The role of imperfections

The relative diffraction peak intensities of He atoms with an incident beam energy of 65 meV diffracted from a microfabricated 100 nm-period transmission grating are analyzed using both Fresnel and

Determination of Atom-Surface van der Waals Potentials from Transmission-Grating Diffraction Intensities

Molecular beams of rare gas atoms and ${\mathrm{D}}_{2}$ have been diffracted from 100-nm-period ${\mathrm{SiN}}_{x}$ transmission gratings. The relative intensities of the diffraction peaks out to

Loss of spatial coherence by a single spontaneous emission.

The loss of transverse spatial coherence of an atomic wave function after a single spontaneous emission is demonstrated and the period of the standing light wave is changed to mapped the loss of spatial coherent as a function of the transverse coordinate.