搜索结果: 1-15 共查到“物理学 cold atoms”相关记录15条 . 查询时间(0.064 秒)
Direct Probe of Topological Order for Cold Atoms.
Direct Probe Topological Order Cold Atoms
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2016/1/22
Cold-atom experiments in optical lattices offer a versatile platform to realize various topological quantum phases. A key challenge in those experiments is to unambiguously probe the topological order...
Long range transport of ultra cold atoms in a far-detuned 1D optical lattice
Long range transport ultra cold atoms far-detuned 1D optical lattice Atomic Physics
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2012/4/27
We present a novel method to transport ultra cold atoms in a focused optical lattice over macroscopic distances of many Rayleigh ranges. With this method ultra cold atoms were transported over 5 cm in...
Diagrammatic pump-probe approach to coherent backscattering of laser light by cold atoms: Double scattering revisited
Diagrammatic pump-probe coherent backscattering of laser light cold atoms Double scattering revisited Atomic Physics
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2012/4/20
We present a diagrammatic derivation of the coherent backscattering spectrum from two two-level atoms using the pump-probe approach, wherein the multiple scattering signal is deduced from single-atom ...
Analogy of RKKY oscillations to the heat exchange in cold atoms
Analogy RKKY oscillations the heat exchange cold atoms
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2012/2/28
An oscillatory term is found in both the energy expectation and dynamics of a wave-packet in a time-varying harmonic trap and infinite potential well. They are proved to oscillate in coherence with th...
Optimized coupling of cold atoms into a fiber using a blue-detuned hollow-beam funnel
Optimized coupling cold atoms fiber blue-detuned hollow-beam funnel
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2011/8/11
Abstract: We theoretically investigate the process of coupling cold atoms into the core of a hollow-core photonic-crystal optical fiber using a blue-detuned Laguerre-Gaussian beam. In contrast to the ...
Amplifying single impurities immersed in a gas of ultra cold atoms
ultra cold atoms impurities
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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...
A Moving Magnetic Trap Decelerator: a New Source for Cold Atoms and Molecules
Moving Magnetic Trap Decelerator Source Cold Atoms Molecules
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2010/11/12
We present a new source of cold paramagnetic atoms and molecules. The paramagnetic particles are cooled during the adiabatic expansion and become entrained in an intense, cold but fast supersonic bea...
Simulating quantum-optical phenomena with cold atoms in optical lattices
quantum-optical phenomena cold atoms optical lattices
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2010/11/4
We propose a scheme involving cold atoms trapped in optical lattices to observe different phenomena traditionally linked to quantum-optical systems. The basic idea consists of connecting the trapped a...
Dirac Equation For Cold Atoms In Artificial Curved Spacetimes
Dirac Equation Cold Atoms Artificial Curved Spacetimes
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2010/11/11
We argue that the Fermi-Hubbard Hamiltonian describing the physics of ultracold atoms on optical lattices in the presence of artificial non-Abelian gauge fields, is exactly equivalent to the gauge the...
Efficient Guiding of Cold Atoms though a Photonic Band Gap Fiber
Efficient Guiding Cold Atoms Photonic Band Gap Fiber
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2010/10/29
We demonstrate the first guiding of cold atoms through a 88 mm long piece of photonic band gap fiber. The guiding potential is created by a far-off resonance dipole trap propagating inside the fiber w...
Exact Yrast Spectra of Cold Atoms on a Ring
Exact Yrast Spectra Cold Atoms Ring
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2010/10/27
We propose a methodology to construct excited states with a fixed angular momentum, namely,
“yrast excited states” of finite-size one-dimensional bosonic systems with periodic boundary conditions.The...
Quantum chaos of a mixed, open system of kicked cold atoms
Quantum chaos mixed open system
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2010/10/20
We suggest and demonstrate an all-optical experimental setup to observe and engineer entanglement oscillations of a pair of polarization qubits in a non-Markovian channel. We generate entangled photon...
Combined quantum state preparation and laser cooling of a continuous beam of cold atoms
quantum state preparation laser cooling continuous beam cold atoms
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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 ...
Ultra cold atoms help share quantum information（图）
atoms quantum information quantum mechanics
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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 ...
Chip targets cold atoms（图）
Chip targets Cold atoms Atom chips
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2009/5/20
A new method to trap atoms on a chip has been developed by researchers in the UK. The technique involves capturing cold atoms directly from a room temperature gas of rubidium — and could lead to the d...