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We study nonlinear interferometry applied to a measurement of atomic spin and demonstrate a sensitivity that cannot be achieved by any linear-optical measurement with the same experimental resources. We use alignment-to-orientation…

Quantum Physics · Physics 2014-09-25 R. J. Sewell , M. Napolitano , N. Behbood , G. Colangelo , F. Martin Ciurana , M. W. Mitchell

Spin inertia measurements are a novel experimental tool to study long-time spin relaxation processes in semiconductor nanostructures. We develop a theory of the spin inertia effect for resident electrons and holes localized in quantum dots.…

Mesoscale and Nanoscale Physics · Physics 2019-12-23 Philipp Schering , Götz S. Uhrig , Dmitry S. Smirnov

A study of the spin asymmetries for polarized elastic proton proton collisions in the electromagnetic hadronic interference (CNI) region of momentum transfer provides a method of self calibration of proton polarization. The method can be…

High Energy Physics - Phenomenology · Physics 2008-11-26 N. H. Buttimore , E. Leader , T. L. Trueman

We investigate, through polarization-resolved spectroscopy, the spin transport by propagating polariton condensates in a quasi one-dimensional microcavity ridge along macroscopic distances. Under circularly polarized, continuous-wave,…

Mesoscale and Nanoscale Physics · Physics 2015-02-11 C. Antón , S. Morina , T. Gao , P. S. Eldridge , T. C. H. Liew , M. D. Martín , Z. Hatzopoulos , P. G. Savvidis , I. A. Shelykh , L. Viña

We have developed a novel technique for detection of spin polarization with a quantum dot weakly coupled to the objective device. The disturbance to the object in this technique is very small since the detection is performed through…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 Sunwoo Kim , Yoshiaki Hashimoto , Taketomo Nakamura , Shingo Katsumoto

A formalism for spin observables of the reaction $pd\to ~^3He\eta$ is derived in a model independent way. The general case with a full set of six independent spin amplitudes is studied. Furthermore, approximations by five and four spin…

Nuclear Theory · Physics 2008-11-26 Yu. N. Uzikov

We present a general unifying theory for spin polarization decay due to the interplay of spin precession and momentum scattering that is applicable to both spin-1/2 electrons and spin-3/2 holes. Our theory allows us to identify and…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Dimitrie Culcer , Roland Winkler

Electron spin takes critical role in almost all novel phenomena discovered in modern condensed matter physics (High-temperature superconductivity, Kondo effect, Giant Magnetoresistance, topological insulator, quantum anomalous Hall effect,…

Materials Science · Physics 2016-05-04 Fuhao Ji , Tan Shi , Mao Ye , Weishi Wan , Zhen Liu , Jiajia Wang , Tao Xu , Shan Qiao

We analyze the physical meaning of a possible experiment aimed at the simultaneous measurement of two non-commuting spin components. We demonstrate that switching of a strong spin-orbit interaction, e.g., in a solid state or a cold-atom…

Quantum Physics · Physics 2015-05-28 D. Sokolovski , E. Ya. Sherman

We develop a semiclassical kinetic theory for electron spin relaxation in semiconductors. Our approach accounts for elastic as well as inelastic scattering and treats Elliott-Yafet and motional-narrowing processes, such as D'yakonov-Perel'…

Materials Science · Physics 2009-11-10 Franz X. Bronold , Avadh Saxena , Darryl L. Smith

We explore a subtle and fundamental nature of spin-orbit interaction (SOI) in a general paraxial beam-field by mathematically characterizing the orbital angular momentum (OAM) flux densities of the spin-polarized component fields via…

Optics · Physics 2024-06-13 Anirban Debnath , Nirmal K. Viswanathan

We present a novel analysis method for measurements of polarization transferred in $A(\vec{e},e'\vec{N})$ experiments, which can be applied to other kinds of polarization measurements as well. In this method the polarization transfer…

Nuclear Theory · Physics 2018-08-15 D. Izraeli , I. Mardor , E. O. Cohen , M. Duer , T. Y. Izraeli , I. Korover , J. Lichtenstadt , E. Piasetzky

We study the way the unitary evolution of spin 1/2 particules can be represented in a counterfactual definiteness setting. More precisely, by representing the state of such a particule by a triplet of values corresponding to the supposedly…

Quantum Physics · Physics 2012-10-17 Olivier Brunet

Quantum metrology enables estimation of optical phase shifts with precision beyond the shot-noise limit. One way to exceed this limit is to use squeezed states, where the quantum noise of one observable is reduced at the expense of…

We constructed a cavity QED system with a diamagnetic atom of 171Yb and performed projective measurements on a single nuclear spin. Since Yb has no electronic spin and has 1/2 nuclear spin, the procedure of spin polarization and state…

Quantum Physics · Physics 2015-05-13 Makoto Takeuchi , Nobuyuki Takei , Kodai Doi , Peng Zhang , Masahito Ueda , Mikio Kozuma

We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon, pioneering a novel polarimetry technique with wide application to future nuclear and hadronic physics…

We use spatial spin separation by a magnetic focusing technique to probe the polarization of quantum point contacts. The point contacts are fabricated from p-type GaAs/AlGaAs heterostructures. A finite polarization is measured in the…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 L. P. Rokhinson , L. N. Pfeiffer , K. W. West

The concept of vectorial spin analysis in spin and angle resolved photoemission is illustrated in this report. Two prototypical systems, Bi/Ag(111)(sqrt3 x sqrt3)R30 and Pb/Ag(111)(sqrt3 x sqrt3)R30, which show a large Rashba type…

Other Condensed Matter · Physics 2009-11-13 Fabian Meier , Hugo Dil , Jorge Lobo-Checa , Luc Patthey , Juerg Osterwalder

We present the theoretical basis of a cavity-enhanced polarimetric scheme for the measurement of parity-nonconserving (PNC) optical rotation. We discuss the possibility of detecting PNC optical rotation in accessible transitions in…

Atomic Physics · Physics 2015-06-17 L. Bougas , G. E. Katsoprinakis , W. von Klitzing , T. P. Rakitzis

We show that dynamics in spin-orbit coupling field simulates the von Neumann measurement of a particle spin. We demonstrate how the measurement influences the spin and coordinate evolution of a particle by comparing two examples of such a…

Quantum Physics · Physics 2014-01-21 E. Ya. Sherman , D. Sokolovski