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Physics 2, 82 (2009) – Published October 5, 2009 Quantum Information Semiconductor Physics Mesoscopics Nanophysics A theoretical analysis of recent experiments suggests that a key feature of a topological quantum computer—the unusual statistics of quasiparticles in the quantum Hall effect—may finally have been observed. |
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Physics 2, 83 (2009) – Published October 5, 2009 An entangled state of six photons could potentially carry quantum information over large distances and between different reference frames. |
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Physics 2, 62 (2009) – Published July 20, 2009 This design of atomic quantum memory tells us when a pulse of light has been successfully stored and then proceeds to retrieve it without significantly affecting its polarization. The exquisite operation provides a new capability for quantum information networks. |
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Physics 2, 52 (2009) – Published June 22, 2009 A proposal for obtaining optical resolution better than the classical limit by means of spatially entangled quantum states of light opens a new frontier in the fields of quantum optical imaging, metrology, and sensing. |
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Physics 2, 41 (2009) – Published May 18, 2009 Atomic & Molecular Physics Quantum Information Optics Loading cold atoms into a hollow-core optical fiber enables all-optical switching with just several hundred photons. |
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Physics 2, 38 (2009) – Published May 11, 2009 Entanglement may not be the source of a quantum computer’s power. But if not, what is? |
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Physics 2, 39 (2009) – Published May 11, 2009 Quantum Information Quantum Mechanics A new algorithm allows for the extremely efficient calculation of thermally averaged quantities in one dimension, in conjunction with the density matrix renormalization group method. The key is the judicious selection of a few representative states. |
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Physics 2, 16 (2009) – Published February 23, 2009 Quantum Information Spintronics Two theoretical studies reveal how one might achieve electric-field control of spin in semiconductors, both in an impurity-localized electron, and also with a quantum dot molecule. |
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Physics 1, 39 (2008) – Published December 8, 2008 Preparing a harmonic oscillator in a state with a well-defined energy is a tricky business. With the new tools provided by cavity and circuit quantum electrodynamics it is now possible to make these pure quantum states and watch how they evolve in time. |
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Physics 1, 34 (2008) – Published November 10, 2008 Quantum measurements are conventionally thought of as irretrievably “collapsing” a wave function to the observed state. However, experiments with superconducting qubits show that the partial collapse resulting from a weak continuous measurement can be restored. |
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Physics 1, 23 (2008) – Published September 22, 2008 Laser beams made up of millions of sharply defined and coherently locked optical frequencies, called optical frequency combs, may provide a way to implement a powerful quantum computer. |
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