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MIT undergraduates are learning about nanoscale science and engineering from individual atoms up to full-scale functional systems, and they’re doing it hands-on at MIT.nano.
Ultracold atoms point toward an intriguing magnetic behavior（图）
Ultracold atoms point toward magnetic behavior
2017/10/25
The researchers found that applying a strong magnetic field to these ultracold atoms caused them to line up in an alternating pattern and lean away from each other. The behavior, which researchers cal...
From atoms to steps:The microscopic origins of crystal evolution
Burton–Cabrera–Frank theory Solid-on-solid model Non-equilibrium statistical mechanics
2015/10/16
The Burton–Cabrera–Frank (BCF) theory of crystal growth has been successful in describing a wide range of phenomena in surface physics. Typical crystal surfaces are slightly misoriented with respect t...
We examine the problem of hadronic atom energy shifts using the technique of effective interactions and demonstrate the equivalence with the conventional quantum mechanical approach.
Magic-zero wavelengths of alkali-metal atoms and their applications
Magic-zero wavelengths alkali-metal atoms application Quantum Gases
2011/8/4
Abstract: Using first-principles calculations, we identify "magic-zero" optical wavelengths, \lambda_zero, for which the ground-state frequency-dependent polarizabilities of alkali-metal atoms vanish....
Amplifying single impurities immersed in a gas of ultra cold atoms
ultra cold atoms impurities
2011/9/15
We present a method for amplifying a single or scattered impurities immersed in a background gas of ultra cold atoms so that they can be optically imaged and spatially resolved. Our approach relies on...
Abstract: If the polaron coupling constant $\alpha$ is large enough, bipolarons or multi-polarons will form. When passing through the critical $\alpha_c$ from above, does the radius of the system simp...
Abstract. If the polaron coupling constant is large enough, bipolarons or multi-polarons will form. When passing through the critical c from above,does the radius of the system simply get arbitrari...
Abstract. If the polaron coupling constant is large enough, bipolarons or multi-polarons will form. When passing through the critical c from above,does the radius of the system simply get arbitrari...
Resonantly Enhanced Tunneling and Transport of Ultracold Atoms on Tilted Optical Lattices
Tunneling Ultracold Atoms Tilted Optical Lattices
2011/9/9
We investigate the resonantly enhanced tunneling dynamics of ultracold bosons loaded on a tilted 1-D optical lattice, which can be used to simulate a chain of Ising spins and associated quantum phase ...
Strong Interactions of Single Atoms and Photons near a Dielectric Boundary
Interactions Single Atoms Dielectric Boundary
2010/11/8
Modern research in optical physics has achieved quantum control of strong interactions between a single atom and one photon within the setting of cavity quantum electrodynamics (cQED). However, to mov...
Ground state properties of a three-site Bose-Fermi ring with a small number of atoms
three-site Bose-Fermi small number of atoms
2010/11/25
We investigate a three-site ring system with a small number of quantum degenerate bosons and
fermions. By means of the exact diagonalization of the Bose-Fermi-Hubbard Hamiltonian, we show
that the s...
Fluctuation-induced forces between atoms and surfaces: the Casimir-Polder interaction
Fluctuation-induced forces atoms surfaces Casimir-Polder interaction
2010/11/5
Electromagnetic fluctuation-induced forces between atoms and surfaces are generally known as Casimir-Polder interactions. The exact knowledge of these forces is rapidly becoming important in modern ex...
Quantum walks and quantum simulations with Bloch oscillating spinor atoms
Quantum walks quantum simulations Bloch oscillating spinor atoms
2010/11/5
We propose a scheme for the realization of a quantum walker and a quantum simulator for the Dirac equation with ultracold spinor atoms in driven optical lattices. A precise control of the dynamics of ...
Comparison of the hydrodynamic and Dirac models of the dispersion interaction between graphene and H, He${}^{\ast}$, or Na atoms
Comparison the hydrodynamic Dirac models the dispersion interaction between graphene
2010/10/29
The van der Waals and Casimir-Polder interaction of different atoms with graphene is investigated using the Dirac model which assumes that the energy of quasiparticles is linear with respect to the mo...