Publications
267 results found
Hinds EA, Darlington T, Hughes IG, 2001, Periodic trajectories of cold atoms in a gravitational cavity, Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN: 0953-4075
Bertram RP, Merimeche H, Mützel M, et al., 2001, Magnetic whispering-gallery mirror for atoms -: art. no. 053405, PHYSICAL REVIEW A, Vol: 63, ISSN: 1050-2947
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- Citations: 5
Hinds EA, Vale CJ, Boshier MG, 2001, Two-wire waveguide and interferometer for cold atoms, PHYSICAL REVIEW LETTERS, Vol: 86, Pages: 1462-1465, ISSN: 0031-9007
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- Citations: 132
Hinds EA, Bertram RP, Merrimeche H, et al., 2001, Magnetic whispering-gallery mirror for atoms, Physical Review A, ISSN: 1050-2947
Hinds EA, 2001, Miniature guides for neutral atoms, Melville, XVIIth international conferene on atomic physics, Florence, Italy, 04 -09 June 2000, Publisher: American Institute of Physics, Pages: 405-413
Burrows SA, Guerandel S, Hinds EA, et al., 2001, Towards a precise measurement of the He+ 2S lamb shift, The hydrogen atom : precision physics of simple atomic systems, Editors: Karshenboim, Pavone, Bassani, Inguscio, Hansch, Berlin, Publisher: Springer, Pages: 303-313, ISBN: 9783540419358
Sauer BE, Hudson JJ, Tarbutt AR, et al., 2001, Measuring the electron electric dipole moment in YbF, Melville, Comminsfest symposium on art and symmetry in experimental physics, Berkeley, California, 20 - 21 May 2001, Publisher: American Institute of Physics, Pages: 62-71
Hinds EA, Sauer BE, Hudson JJ, et al., 2001, Measurements of the electron and neutron EDM, KAON 2001 international conference on CP violation, Pisa, Italy, 12 - 17 June 2001, Publisher: INFN: Istituto Nazionale di Fisica Nucleare and Laboratori Nazionale di Frascati, Pages: 281-293
Hinds EA, Vale, Boshier MG, 2000, Two-wire waveguide and interferometer for cold atoms, Physical Review Letters, ISSN: 0031-9007
Key M, Rooijakkers W, Hinds EA, 2000, Transport of cold atoms in a miniature guide, New Journal of Physics, Vol: 2, ISSN: 1367-2630
We have developed a waveguide for atoms based on magnetic confinement within a hollow glass fibre. Weak-field-seeking atoms are transported along a central hole and are prevented from hitting the wall by the magnetic field due to four current-carrying wires embedded in the fibre. A 'pinch' coilwound around the fibre plugs the guide at one end with a magnetic field strong enough to reflect the weak-field-seeking atoms. We have demonstrated that all the positive ℳF sublevels of the 85Rb F = 3 ground state are guided and have made a movie of the atom dynamics.
Hinds EA, Eberlein C, 2000, Quantum propagation of neutral atoms in a magnetic quadrupole guide, Physical Review A, ISSN: 1050-2947
Hinds EA, Key, Hughes IG, et al., 2000, Propagation of cold atoms along a miniature magnetic guide, Physical Review Letters, ISSN: 0031-9007
Hinds EA, Calarco T, Jaksch D, et al., 2000, Quantum gates with neutral atoms: controlled collisional interactions in time-dependent traps, Physical Review A, ISSN: 1050-2947
Hinds EA, Rosenbusch, Retter, et al., 2000, Reflection of cold atoms by a cobalt single crystal, Applied Physics B, ISSN: 0946-2171
Hinds EA, Eberlein C, 2000, Quantum propagation of neutral atoms in a magnetic quadrupole guide, Physical Review A - Atomic, Molecular, and Optical Physics, Vol: 61, Pages: 336141-3361413, ISSN: 1050-2947
We consider the quantized motion of neutral atoms at very low temperature in a two-dimensional magnetic quadrupole structure formed, for example, by four current-carrying wires along the z direction. The magnetic field B in the guide is proportional to the vector (x, - y). We show that this field can be used to make a single-mode atomic de Broglie waveguide which has bound states of low angular momentum, even though the field at the center of the guide goes to zero. We investigate the spectrum and decay rate of the transverse modes for spin-1/2 and spin-1 atoms.
Rosenbusch P, Hall BV, Hughes IG, et al., 2000, Manipulation of cold atoms using a corrugated magnetic reflector, Physical Review A - Atomic, Molecular, and Optical Physics, Vol: 61, ISSN: 1050-2947
A corrugated magnetic reflector is realized by adding a bias field to a static magnetic mirror. This permits real-time manipulation of a cold-atom cloud on time scales down to 100 μs. We show that rotation of the bias field generates a traveling corrugation of adjustable depth and velocity. Momentum is transferred from the traveling wave to the atoms, resulting in a displacement of the cloud that depends on the wave velocity. This is a step towards a new method of manipulation in which neutral atoms could be transported across the surface by surfing along the moving wave. © 2000 The American Physical Society.
Rosenbusch P, Hall BV, Hughes IG, et al., 2000, Manipulation of cold atoms using a corrugated magnetic reflector, Physical Review A - Atomic, Molecular, and Optical Physics, Vol: 61, Pages: 314041-314044, ISSN: 1050-2947
A corrugated magnetic reflector is realized by adding a bias field to a static magnetic mirror. This permits real-time manipulation of a cold-atom cloud on time scales down to 100 μs. We show that rotation of the bias field generates a traveling corrugation of adjustable depth and velocity. Momentum is transferred from the traveling wave to the atoms, resulting in a displacement of the cloud that depends on the wave velocity. This is a step towards a new method of manipulation in which neutral atoms could be transported across the surface by surfing along the moving wave.
Rosenbusch P, Hall BV, Hughes IG, et al., 2000, Manipulation of cold atoms by an adaptable magnetic reflector, Applied Physics B: Lasers and Optics, Vol: 70, Pages: 709-720, ISSN: 0946-2171
Adaptive optics for cold atoms has been experimentally realized by applying a bias magnetic field to a static magnetic mirror. The mirror consist of a 12-mm-diameter piece of commercial videotape, having a sine wave of wavelength 25.4 μm recorded in a single track across its width, curved to form a concave reflector with radius of curvature R = 54 mm. We have studied the performance of the mirror by monitoring the evolution of a 24 μK cloud of 85Rb atoms bouncing on it. A uniform static external magnetic field was added to the mirror field causing a corrugated potential from which the atoms bounce with increased angular spread. The characteristic angular distribution of the surface normal is mapped at the peak of the bounce for atoms dropped from a height of R/2 and at the peak of the second bounce for a drop height of R/4. In a second experiment a time-dependent magnetic field was applied and the angular distribution of the cloud was measured as a function of field frequency. In this scheme we demonstrate a corrugated potential whose time-dependent magnitude behaves like a diffraction grating of variable depth. Finally a rotating field was added to generate a corrugated potential that moves with a velocity given by the product of the external field rotation frequency and the videotape wavelength. This travelling grating provides a new method of manipulation as cold atoms are transported across the surface by surfing along the moving wave. Two theoretical methods have been developed to predict the behaviour of atoms reflecting from these stationary, variable magnitude and moving corrugated potentials. A simple analytic theory provides excellent agreement for reflection from a stationary corrugated potential and gives good agreement when extended to the case of a travelling grating. A Monte Carlo simulation was also performed by brute force numeric-integration of the equations of motion for atoms reflecting from all three corrugated potential cases.
Pendlebury JM, Hinds EA, 2000, Particle electric dipole moments, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol: 440, Pages: 471-478, ISSN: 0168-9002
Measurements of particle electric dipole moments (EDMs) continue to put power constraints on theories of T-symmetry and CP-symmetry violation, which form currently one of the most prominent fields in particle physics. EDM measurements have been concentrated on neutral systems such as the neutron and atoms and molecules. These measurements allow one to deduce, in turn, the electric dipole moments of the fundamental fermions, that is, the lighter leptons and quarks and also those of some heavy nuclei.
Merimeche H, Bertram R, Haubrich D, et al., 2000, Large angle guiding of atomic beams by magnetized video tape
The deflection of a collimated and polarized cesium atomic beam was investigated by a sinusoidally magnetized video tape with a period length of 30 μm. From these measurements, the magnetic field strength at the surface was determined to be 0.05 Tesla. The reflectivity was found to be consistent with 100%.
Rosenbusch P, Retter JA, Hall BV, et al., 2000, Reflection of cold atoms by a cobalt single crystal, Applied Physics B: Lasers and Optics, Vol: 70, Pages: 661-663, ISSN: 0946-2171
We have demonstrated that a cobalt single crystal can be used to make a remarkably smooth retro-reflector for cold paramagnetic atoms. The crystal is cut so that its surface lies in the (0001) plane and the atoms are reflected by the magnetic field above the surface due to the self-organized pattern of magnetic domains in the material. We find that the reflectivity for suitably polarized atoms exceeds 90% and may well be unity. We use the angular spread of a reflected atom cloud to measure the roughness of the mirror. We find that the angular variation of the equivalent hard reflecting surface is (3.1 ± 0.3°)rms for atoms dropped onto the mirror from a height of 2 cm.
Hinds E, 2000, Chips get closer to quantum computing, Physics World, Vol: 13, Pages: 25-26, ISSN: 0953-8585
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- Citations: 1
Calarco T, Hinds EA, Jaksch D, et al., 2000, Quantum gates with neutral atoms: Controlling collisional interactions in time-dependent traps, Physical Review A - Atomic, Molecular, and Optical Physics, Vol: 61, Pages: 223041-2230411, ISSN: 1050-2947
We theoretically study specific schemes for performing a fundamental two-qubit quantum gate via controlled atomic collisions by switching microscopic potentials. In particular we calculate the fidelity of a gate operation for a configuration where a potential barrier between two atoms is instantaneously removed and restored after a certain time. Possible implementations could be based on microtraps created by magnetic and electric fields, or potentials induced by laser light.
Hinds EA, Hughes IG, 1999, Magnetic atom optics: Mirrors, guides, traps, and chips for atoms, Journal of Physics D: Applied Physics, Vol: 32, ISSN: 0022-3727
For the last decade it has been possible to cool atoms to microkelvin temperatures (approximately 1 cm s-1) using a variety of optical techniques. Light beams provide the very strong frictional forces required to slow atoms from room temperature (approximately 500 m s-1). However, once the atoms are cold, the relatively weak conservative forces of static electric and magnetic fields play an important role. In our group we have been studying the interaction of cold rubidium atoms with periodically magnetized data storage media. Here we review the underlying principles of the forces acting on atoms above a suitably magnetized substrate or near current-carrying wires. We also summarize the status of experiments. These structures can be used as smooth or corrugated reflectors for controlling the trajectories of cold atoms. Alternatively, they may be used to confine atoms to a plane, a line, or a dot and in some cases to reach the quantum limit of confinement. Atoms levitated above a magnetized surface can be guided electrostatically by wires deposited on the surface. The flow and interaction of atoms in such a structure may form the basis of a new technology, `integrated atom optics' which might ultimately be capable of realizing a quantum computer.
Hinds EA, 1999, Controlling cold atoms above a magnetic reflector, Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, ISSN: 1364-503X
Hinds EA, Sauer BE, Cahn SB, et al., 1999, Perturbed hyperfine doubling in the A^2Π_1/2 and [18.6]0.5 states of YbF, Journal of Chemical Physics, ISSN: 0021-9606
Hinds EA, Saba CV, Barton PA, et al., 1999, Reconstruction of a cold atom cloud by magnetic focussing, Physical Review Letters, ISSN: 0031-9007
Hinds E, 1999, Caesium puts pressure on the standard model, Physics World, Vol: 12, ISSN: 0953-8585
Hinds EA, Hughes IG, Barton PA, et al., 1999, Atom Optics with Magnetic Surfaces II: Microscopic Analysis of the Floppy Disk Mirror, Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN: 0953-4075
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