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Trends
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Physics 2, 95 (2009) – Published November 16, 2009 Scientists and novelists have been intrigued for centuries by the possibility of hiding an object so completely that neither trace of the object nor of its cloak is to be found. Recent theoretical developments show that cloaking is, in principle, possible for electromagnetic waves and to a limited extent for other types of wave, such as acoustic waves. An energetic program of experimental research has shown some of the schemes to be realizable in practice. |
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Physics 2, 91 (2009) – Published November 2, 2009 Optics Particles & Fields Metamaterials Čerenkov radiation with the emission cone reversed has been observed in a metamaterial with negative refractive index. |
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Published November 2, 2009 An advance in attosecond pulse generation will make it easier to produce a single pulse. |
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Physics 2, 86 (2009) – Published October 19, 2009 How freak or rogue waves form in the ocean is not well understood, but new investigations suggest a mechanism for these waves that may also allow formation of high-intensity pulses in optical fibers. |
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Physics 2, 85 (2009) – Published October 12, 2009 A new approach to reduce spherical and chromatic aberration in electron microscopy allows for low-energy imaging of single-layer boron nitride, a novel 2D nanostructure that is analogous to graphene. |
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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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Published September 21, 2009 The demonstration of photon emission as free-electrons pass through a nanoscale grating could pave the way for a new generation of on-chip tunable light sources. |
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Published September 21, 2009 Atomic & Molecular Physics Optics Ultrafast optical probing of an ionized molecule with different pulse durations reveals details of the dynamics of vibrational excitations. |
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Published September 14, 2009 A full quantum mechanical description of how light interacts with matter in higher-harmonic generation may lead to better control over the production of isolated and sequential attosecond ultraviolet pulses. |
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Physics 2, 73 (2009) – Published September 8, 2009 Magnetic switching is typically a continuous process, where a field pulse rotates a magnet from up to down, but it is now possible to do this faster — and with all-optical methods — by first quenching the magnetization to zero and then repolarizing it in the opposite direction. |
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Physics 2, 72 (2009) – Published August 31, 2009 Atomic & Molecular Physics Optics Calculations show that with new short pulse x-ray light sources, it should be possible to use photoelectron emission to make movies of changes in molecular structure. |
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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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Published July 13, 2009 The fastest known random number generator based on a physical process comes from intensity fluctuations in the light from a chaotic laser. |
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Physics 2, 51 (2009) – Published June 22, 2009 Different molecules with nearly identical absorption spectra can be distinguished with the help of shaped laser pulses and adaptive algorithms. |
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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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Published June 22, 2009 Bent light can do more than render objects invisible—it can make them appear as something else. |
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Physics 2, 47 (2009) – Published June 8, 2009 Materials with unusual optical properties may allow the construction of sensors surrounded by a cloaking shell that makes the detectors undetectable. |
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Published June 8, 2009 Is the intracavity field of a laser necessarily a coherent state? |
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Physics 2, 45 (2009) – Published June 1, 2009 Atomic & Molecular Physics Optics Dispersive probing of an atomic transition decreases the “dead time” of optical atomic clocks, potentially enabling more stable time reference standards. |
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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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Trends
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Physics 2, 40 (2009) – Published May 18, 2009 Quantum Information Optics Quantum Mechanics Coherent optical systems combined with micromechanical devices may enable development of ultrasensitive force sensors and quantum information processing technology, as well as permit observation of quantum behavior in large-scale structures. |
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Published May 11, 2009 A unified framework can describe light-matter interactions in a broad range of optomechanical systems, from single laser-cooled atoms to micromechanical mirrors. |
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Physics 2, 32 (2009) – Published April 27, 2009 In the weird world of quantum mechanics, looking at time flowing backwards allows us to look forward to precision measurements. |
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Physics 2, 33 (2009) – Published April 27, 2009 The observation of squeezed phonons by x-ray diffraction allows researchers to study the interactions between ultrafast lasers and matter in a whole new light. |
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Published April 20, 2009 Simulations of optical speckle reveal topological scaling laws that apply to a wide range of physical systems. |
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