Entanglement and state characterisation from two-photon interference
... scientific studies on the nature of light by Hooke and Huygens. Nevertheless, the observations they made at the time could also be explained by describing light as composed by particles, so that the wave theory of light has not been universally accepted till the first years of the 19th century, when ...
... scientific studies on the nature of light by Hooke and Huygens. Nevertheless, the observations they made at the time could also be explained by describing light as composed by particles, so that the wave theory of light has not been universally accepted till the first years of the 19th century, when ...
Dual-path source engineering in integrated quantum optics
... manipulate system. While the properties of a single-waveguide source of PDC are well known and the calculation algorithms for large waveguide arrays are understood, the features of a coupled two-waveguide system with integrated PDC are still an open research question. Here we explore the physics and ...
... manipulate system. While the properties of a single-waveguide source of PDC are well known and the calculation algorithms for large waveguide arrays are understood, the features of a coupled two-waveguide system with integrated PDC are still an open research question. Here we explore the physics and ...
Sufficient conditions for three-particle entanglement and their tests in
... and g the angles these vectors span from the x axis. These expectation values are factorizable, and measurements of spin observables in the xz plane cannot lead to a violation of condition A, i.e., the inequality ~15!. Neither does the choice of measurements in this experiment allow for a test of co ...
... and g the angles these vectors span from the x axis. These expectation values are factorizable, and measurements of spin observables in the xz plane cannot lead to a violation of condition A, i.e., the inequality ~15!. Neither does the choice of measurements in this experiment allow for a test of co ...
Electromagnetic cascade in high energy electron, positron, and
... The processes typical for High Intensity Particle Physics [1], i.e., the interactions of charged particles with strong electromagnetic fields [2], have attracted considerable interest recently. This interest is due to the rapid growth of the maximum achievable laser intensity at many existing, const ...
... The processes typical for High Intensity Particle Physics [1], i.e., the interactions of charged particles with strong electromagnetic fields [2], have attracted considerable interest recently. This interest is due to the rapid growth of the maximum achievable laser intensity at many existing, const ...
Matter-Wave Interferometer for Large Molecules
... gravitational acceleration component in the interferometer plane, which is on the order of 1023 g, can be measured within a short integration time. In conclusion, we have demonstrated for the first time an interferometer for massive molecules that are internally in a highly excited thermal state. Th ...
... gravitational acceleration component in the interferometer plane, which is on the order of 1023 g, can be measured within a short integration time. In conclusion, we have demonstrated for the first time an interferometer for massive molecules that are internally in a highly excited thermal state. Th ...
Entangled Photons and Bell`s Inequality
... version of this situation where a pi meson decays down to an electron and positron. Quantum theory predicts that if the spin of one of the particles is measured the other must be the opposite, no matter the distance between them. Einstein believed this “spooky action at a distance” is in violation o ...
... version of this situation where a pi meson decays down to an electron and positron. Quantum theory predicts that if the spin of one of the particles is measured the other must be the opposite, no matter the distance between them. Einstein believed this “spooky action at a distance” is in violation o ...
Thermal noise and correlations in photon detection
... circuit theory, the scattering matrix relates the incoming and outgoing waves that travel on the semiinfinite transmission lines that are attached to the N ports of a linear network. The scattering matrix Sij depends on two things: the construction of the circuit in question, and the choice of the c ...
... circuit theory, the scattering matrix relates the incoming and outgoing waves that travel on the semiinfinite transmission lines that are attached to the N ports of a linear network. The scattering matrix Sij depends on two things: the construction of the circuit in question, and the choice of the c ...
Entanglement purification for Quantum Computation
... by means of linear optical elements, controlled deterministic interactions between photons (e.g. using Kerr non– linearities) are very difficult to achieve. Also for trapped neutral atoms or ions, it is much easier to manipulate the electronic states of each particle by means of well controllable la ...
... by means of linear optical elements, controlled deterministic interactions between photons (e.g. using Kerr non– linearities) are very difficult to achieve. Also for trapped neutral atoms or ions, it is much easier to manipulate the electronic states of each particle by means of well controllable la ...
Performance gain of displacement receiver with optimized prior
... The quantum receiver for more than two signals has also been investigated. Bondurant proposed a receiver composed of a single photon detector and feedback circuit for discrimination of quadrature phase shift keyed (QPSK, 4-PSK) signals comprising of four equally phase separated states [9]. Mueller e ...
... The quantum receiver for more than two signals has also been investigated. Bondurant proposed a receiver composed of a single photon detector and feedback circuit for discrimination of quadrature phase shift keyed (QPSK, 4-PSK) signals comprising of four equally phase separated states [9]. Mueller e ...
Crystallization of strongly interacting photons in a nonlinear optical fiber
... but, knowing the position of one, other photons are likely to follow at well-defined distances determined by the average photon density. These correlations are predicted to decay relatively slowly in space. We emphasize that the oscillation period depends only on the density of photons nph inside th ...
... but, knowing the position of one, other photons are likely to follow at well-defined distances determined by the average photon density. These correlations are predicted to decay relatively slowly in space. We emphasize that the oscillation period depends only on the density of photons nph inside th ...
LETTERS Generation of Fock states in a superconducting quantum circuit
... Spin systems and harmonic oscillators comprise two archetypes in quantum mechanics1. The spin-1/2 system, with two quantum energy levels, is essentially the most nonlinear system found in nature, whereas the harmonic oscillator represents the most linear, with an infinite number of evenly spaced qua ...
... Spin systems and harmonic oscillators comprise two archetypes in quantum mechanics1. The spin-1/2 system, with two quantum energy levels, is essentially the most nonlinear system found in nature, whereas the harmonic oscillator represents the most linear, with an infinite number of evenly spaced qua ...
CCLRC Technology Press Release form (2)
... In the UK, one of the collaborating institutes is the CCLRC Rutherford Appleton Laboratory (RAL). Here, around 500 large and complex electronics boards for the readout of the CMS silicon tracking detector are being produced, tested and shipped out to CERN. The Tracker Front End Driver (FED) board pr ...
... In the UK, one of the collaborating institutes is the CCLRC Rutherford Appleton Laboratory (RAL). Here, around 500 large and complex electronics boards for the readout of the CMS silicon tracking detector are being produced, tested and shipped out to CERN. The Tracker Front End Driver (FED) board pr ...
Spin-2 particles in gravitational fields
... a Lense-Thirring background. The same equation and some of its generalizations can also be applied to the study of quantum fluids and Boson condensates. Here we apply (III.2) to the investigation of wave effects in lensing. As an example, we consider the propagation of gravitons, or extreme relativi ...
... a Lense-Thirring background. The same equation and some of its generalizations can also be applied to the study of quantum fluids and Boson condensates. Here we apply (III.2) to the investigation of wave effects in lensing. As an example, we consider the propagation of gravitons, or extreme relativi ...
The basis of discontinuous motion
... 4 The confirmation of discontinuous motion It seems very strange that the objects move in a discontinuous and random way. But where to find such weird displays? In fact, they exist everywhere in the microscopic world. As one example let’s have a look at the well-known double-slit experiment. In the ...
... 4 The confirmation of discontinuous motion It seems very strange that the objects move in a discontinuous and random way. But where to find such weird displays? In fact, they exist everywhere in the microscopic world. As one example let’s have a look at the well-known double-slit experiment. In the ...
SPICE Simulation for Analysis and Design of Fast 1.55 micrometer
... discrete nature of QW’s [10] and to distinguish between space and state transport [8]; so a three level representation of carrier energy states has been used [8], [12], which allows to treat each well independently from all the others. This is a strong point respect other equivalent circuit models o ...
... discrete nature of QW’s [10] and to distinguish between space and state transport [8]; so a three level representation of carrier energy states has been used [8], [12], which allows to treat each well independently from all the others. This is a strong point respect other equivalent circuit models o ...
Mass-Energy equivalence, Annihilation, Two
... of the process as a whole. However there is an unanswered ontological question of how the internal sub-processes operate at the next deeper foundational level, particularly how the photons transform into matter-antimatter pairs. Before showing a solution to this problem, it is necessary to identify ...
... of the process as a whole. However there is an unanswered ontological question of how the internal sub-processes operate at the next deeper foundational level, particularly how the photons transform into matter-antimatter pairs. Before showing a solution to this problem, it is necessary to identify ...