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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.
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....
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...
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 ...
Combined quantum state preparation and laser cooling of a continuous beam of cold atoms
quantum state preparation laser cooling continuous beam cold atoms
2010/10/21
We propose and solve a simple but very general quantum model of an SU(2)spin interacting with a large external system with N states. The coupling is described by a random hamiltonian in a new general ...
Non-equilibrium dynamics of bosonic atoms in optical lattices: Decoherence of many-body states due to spontaneous emission
Non-equilibrium dynamics of bosonic atoms optical lattices Decoherence of many-body states spontaneous emission
2010/10/21
We analyze in detail the heating of bosonic atoms in an optical lattice due to incoherent scattering of light from the lasers forming the lattice. Because atoms scattered into higher bands do not ther...
Quantum jumps and spin dynamics of interacting atoms in a strongly coupled atom-cavity system
Quantum jumps spin dynamics atoms strongly coupled atom-cavity system
2010/4/9
We experimentally investigate the spin dynamics of one and two neutral atoms strongly coupled to a high finesse optical cavity. We observe quantum jumps between hyperfine ground states of a single ato...
Ultra cold atoms help share quantum information（图）
atoms quantum information quantum mechanics
2009/6/3
Scientists in the US have demonstrated a new way of transmitting quantum information by using classical communication channels. Michal Bajcsy at Harvard University and colleagues have used an optical ...
Realistic theory of electromagnetically-induced transparency and slow light in a hot vapor of atoms undergoing collisions
Realistic theory electromagnetically-induced transparency slow light a hot vapor of atoms undergoing collisions
2010/4/9
We present a realistic theoretical treatment of a three-level $\Lambda$ system in a hot atomic vapor interacting with a coupling and a probe field of arbitrary strengths, leading to electromagneticall...
Quantum Dynamics of Cooled Atoms
in the Presence of Bose-Einstein Condensates
Bose-Einstein condensation
master equation
2007/8/15
2001Vol.35No.3pp.319-322DOI:
Quantum Dynamics of Cooled Atoms
in the Presence of Bose-Einstein Condensates
YI Xue-Xi1,3 and SU Jun-Chen2
1 Institute of Theoretical Phys...
Quantum Phase Transition in Two Species of Cold Bosonic Atoms
Bose-Einstein condensate phase transition
2007/8/15
2007Vol.47No.3pp.467-470DOI:
Quantum Phase Transition in Two Species of Cold Bosonic Atoms
YU Zhao-Xian,1,2,3 LIANG Jiu-Qing,1 JIAO Zhi-Yong,3 and WANG
Ji-Suo4
1 Institu...
Dynamic Behavior of Lambda-Type Three-Level Atoms and
Two-Mode Cavity Field
entangled atoms dynamic behavior
2007/8/15
2006Vol.45No.4pp.712-720DOI:
Dynamic Behavior of Lambda-Type Three-Level Atoms and
Two-Mode Cavity Field
HUANG Ting,1 LIN Xiu-Min,1,2 CAO Zhuo-Liang,3 and GUO Guang-Can1
...
Quantum Correlation of Many Atoms in Spinor Bose-Einstein Condensates
spinor Bose-Einstein condensate sub-Poissonian
distribution Cauchy-Schwartz inequality
2007/8/15
2006Vol.45No.2pp.287-292DOI:
Quantum Correlation of Many Atoms in Spinor Bose-Einstein Condensates
YU Zhao-Xian,1,2 LIANG Jiu-Qing,1 and JIAO Zhi-Yong2
1 Institute of T...
Energies of the first row atoms from quantum Monte Carlo
Energies of the first row quantum Monte Carlo
2010/11/24
All-electron variational and diffusion quantum Monte Carlo calculations of the ground state energies of the first row atoms (Li to Ne) are reported. We use trial wavefunctions of four types:single det...