more accurate) measurements of a classi cal force acting on a harmonic oscillator than one can with quantum non-demolition or back action evading techniques.
95, 090402 (2005).The purpose of this article is to show that if one can prepare the initial state of the readout system appropriately, one can at times perform better (i.e. Density and spin response functions in ultracold fermionic atom gases. Atom interferometric detection of the pairing order parameter in a Fermi gas. Finite temperature phase diagram of a polarized Fermi condensate. Probing pair-correlated fermionic atoms through correlations in atom shot noise. Detection of BCS pairing in neutral Fermi fluids via stokes scattering: The Hebel–Slichter effect. Optical detection of a BCS transition of lithium-6 in harmonic traps. Rigorous results on valence-bond ground states in antiferromagnets. Probable absence of a quadrupolar spin-nematic phase in the bilinear-biquadratic spin-1 chain. Dimer state of spin-1 bosons in an optical lattice. Spin-exchange interactions of spin-one bosons in optical lattices: Singlet, nematic, and dimerized phases. Exotic quantum phases and phase transitions in correlated matter. Multimode entanglement of light and atomic ensembles via off-resonant coherent forward scattering. Quantum polarization spectroscopy of ultracold spinor gases. Deterministic atom-light quantum interface. Atomic quantum nondemolition measurements and squeezing. Spectroscopy, Laser 371 (Encyclopedia of Applied Physics, Vol. Quantum noise of an atomic spin polarization measurement. Preparation and detection of magnetic quantum phases in optical superlattices.
Measurement of intracavity quantum fluctuations of light using an atomic fluctuation bolometer. Cavity-enhanced light scattering in optical lattices to probe atomic quantum statistics. Correlations and counting statistics of an atom laser. Comparison of the Hanbury Brown–Twiss effect for bosons and fermions. Hanbury Brown Twiss effect for ultracold quantum gases.
#Demolition physics free
Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice. Spatial quantum noise interferometry in expanding ultracold atom clouds. Probing many-body states of ultracold atoms via noise correlations. Ultracold atoms in optical lattices: Mimicking condensed matter physics and beyond. We illustrate the power of such spatially resolved quantum-noise-limited polarization measurement by applying this method to the detection of various standard and ‘exotic’ types of antiferromagnetic order in lattice systems, and by indicating the feasibility of detection of superfluid order in Fermi liquids. In this way, quantum correlations of matter are faithfully mapped on those of light the latter can then be efficiently measured using homodyne detection. In our method, spatially resolved components of atomic spins couple to quantum polarization degrees of freedom of light. Here, we propose a method for detecting strongly correlated states of ultracold atoms in a quantum non-demolition scheme, that is, in the fundamentally least destructive way permitted by quantum mechanics. Ultracold atoms offer an unprecedented playground for the realization of these goals. Preparation, manipulation and detection of strongly correlated states of quantum many-body systems are among the most important goals and challenges of modern physics.
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