The Origin of Quantized Matter Waves

1986 ◽  
Vol 16 (2) ◽  
pp. 197-253 ◽  
Author(s):  
Olivier Darrigol
Keyword(s):  
Matter Waves

scholarly journals Moiré pattern of interference dislocations in condensate of indirect excitons

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J. R. Leonard ◽  
Lunhui Hu ◽  
A. A. High ◽  
A. T. Hammack ◽  
Congjun Wu ◽  
...  
Keyword(s):  
Long Range ◽  
Direct Measurement ◽  
Quantum Systems ◽  
Matter Waves ◽  
Moire Pattern ◽  
Indirect Excitons ◽  
Moiré Pattern ◽  
Moiré Effect ◽  
Phase Singularities ◽  
Bose Einstein

AbstractInterference patterns provide direct measurement of coherent propagation of matter waves in quantum systems. Superfluidity in Bose–Einstein condensates of excitons can enable long-range ballistic exciton propagation and can lead to emerging long-scale interference patterns. Indirect excitons (IXs) are formed by electrons and holes in separated layers. The theory predicts that the reduced IX recombination enables IX superfluid propagation over macroscopic distances. Here, we present dislocation-like phase singularities in interference patterns produced by condensate of IXs. We analyze how exciton vortices and skyrmions should appear in the interference experiments and show that the observed interference dislocations are not associated with these phase defects. We show that the observed interference dislocations originate from the moiré effect in combined interference patterns of propagating condensate matter waves. The interference dislocations are formed by the IX matter waves ballistically propagating over macroscopic distances. The long-range ballistic IX propagation is the evidence for IX condensate superfluidity.

One-dimensional delocalizing transitions of matter waves in optical lattices

2009 ◽  
Vol 238 (15) ◽  
pp. 1372-1387 ◽  
Author(s):  
H.A. Cruz ◽  
V.A. Brazhnyi ◽  
V.V. Konotop ◽  
M. Salerno
Keyword(s):  
Optical Lattices ◽  
One Dimensional ◽  
Matter Waves

scholarly journals Adiabatic compression of soliton matter waves

2003 ◽  
Vol 36 (13) ◽  
pp. 2851-2859 ◽  
Author(s):  
F Kh Abdullaev ◽  
Mario Salerno
Keyword(s):  
Adiabatic Compression ◽  
Matter Waves

De Broglie’s meter stick: Making measurements with matter waves

Physics Today ◽  
2014 ◽  
Vol 67 (5) ◽  
pp. 30-36 ◽  
Author(s):  
Markus Arndt
Keyword(s):  
Matter Waves

Index of Refraction of Various Gases for Sodium Matter Waves

1995 ◽  
Vol 74 (7) ◽  
pp. 1043-1047 ◽  
Author(s):  
Jörg Schmiedmayer ◽  
Michael S. Chapman ◽  
Christopher R. Ekstrom ◽  
Troy D. Hammond ◽  
Stefan Wehinger ◽  
...  
Keyword(s):  
Index Of Refraction ◽  
Matter Waves

Integrability and Multi-Soliton Solutions for a Variable-Coefficient Coupled Gross–Pitaevskii System for Atomic MatterWaves

2012 ◽  
Vol 67 (10-11) ◽  
pp. 525-533
Author(s):  
Zhi-Qiang Lin ◽  
Bo Tian ◽  
Ming Wang ◽  
Xing Lu
Keyword(s):  
Variable Coefficient ◽  
Soliton Solutions ◽  
Variable Coefficients ◽  
Einstein Condensate ◽  
Matter Wave ◽  
Bilinear Method ◽  
Matter Waves ◽  
Bose Einstein Condensate ◽  
Bose Einstein ◽  
Hirota Bilinear

Under investigation in this paper is a variable-coefficient coupled Gross-Pitaevskii (GP) system, which is associated with the studies on atomic matter waves. Through the Painlev´e analysis, we obtain the constraint on the variable coefficients, under which the system is integrable. The bilinear form and multi-soliton solutions are derived with the Hirota bilinear method and symbolic computation. We found that: (i) in the elastic collisions, an external potential can change the propagation of the soliton, and thus the density of the matter wave in the two-species Bose-Einstein condensate (BEC); (ii) in the shape-changing collision, the solitons can exchange energy among different species, leading to the change of soliton amplitudes.We also present the collisions among three solitons of atomic matter waves.

scholarly journals Anomalous diffraction of matter waves with minimal quantum metasurfaces

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Constantinos Valagiannopoulos
Keyword(s):  
Research Funding ◽  
Quantum Memory ◽  
Fundamental Operation ◽  
Anomalous Diffraction ◽  
Matter Waves ◽  
Large State ◽  
Quantum Device ◽  
State Initiatives

AbstractIn the last few years, there is a huge upsurge in the number of closed deals regarding quantum technologies for materials, computing, communication and instrumentation. Such a trend has inevitably affected the research funding market; thus, large state initiatives are taken that are directly expected to drive the formulation of novel research concepts and the development of quantum device prototypes from sensors and circuitry to quantum memory and repeaters. A fundamental operation behind all these applications is the effective steering of electrons, constituting matter waves, along specific directions and with certain magnitudes, due to development of various reflective and refractive orders. The objective of this study is to optimize the simplest structure that supports such anomalous diffraction, namely a quantum metasurface comprising cylindrical rods embedded in suitable crystalline matter. Several highly-performing designs from these minimal setups are proven to work exceptionally as multiport components, employable to a variety of quantum engineering implementations.

scholarly journals Matter-waves in anharmonic periodic potentials

2007 ◽  
Author(s):  
T. J. Alexander ◽  
M. Salerno ◽  
E.A. Ostrovskaya ◽  
Yu.S. Kivshar
Keyword(s):  
Matter Waves ◽  
Periodic Potentials
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