Atom Interferometry and Precision Tests in Gravitational Physics
... Bohr: The slits’ support momentum should be known with an uncertainty much smaller than δp. Because of the uncertainty principle, the spread δx in the position of the support would then be larger than the separation between the slits so that the interference pattern is washed out. (Question called “ ...
... Bohr: The slits’ support momentum should be known with an uncertainty much smaller than δp. Because of the uncertainty principle, the spread δx in the position of the support would then be larger than the separation between the slits so that the interference pattern is washed out. (Question called “ ...
StMalloQuantumComputing
... The experiment shows all detectors have an equal chance to register an event. San Mallo, June 2004 ...
... The experiment shows all detectors have an equal chance to register an event. San Mallo, June 2004 ...
1 simultaneous polarization squeezing of all three stokes
... Operators, S0 , S1 , S 2 , and S3 follow commutation relations and their variances are restricted by quantum mechanical uncertainty relations. Polarization squeezing is a non classical property which can be mathematically defined with a criterion developed using the uncertainty relations under consi ...
... Operators, S0 , S1 , S 2 , and S3 follow commutation relations and their variances are restricted by quantum mechanical uncertainty relations. Polarization squeezing is a non classical property which can be mathematically defined with a criterion developed using the uncertainty relations under consi ...
Quantum computing with photons: introduction to the circuit model
... and Groverʼs algorithm enables searching in an unordered list with a quadratic speed-up compared to the classical case [5]. Recently, another quantum algorithm was invented which solves certain systems of linear equations with exponential speed-up compared to a classical computer [6, 7]. This tutori ...
... and Groverʼs algorithm enables searching in an unordered list with a quadratic speed-up compared to the classical case [5]. Recently, another quantum algorithm was invented which solves certain systems of linear equations with exponential speed-up compared to a classical computer [6, 7]. This tutori ...
Light`s Orbital Angular Momentum
... phase and amplitude structure. And the beam pattern can be changed many times per second to meet experimental requirements. Figure 3 shows how a comparatively simple “forked” holographic pattern can transform the planewave output of a conventional laser into a pair of LG beams carrying orbital angul ...
... phase and amplitude structure. And the beam pattern can be changed many times per second to meet experimental requirements. Figure 3 shows how a comparatively simple “forked” holographic pattern can transform the planewave output of a conventional laser into a pair of LG beams carrying orbital angul ...
Resonant Effects in Collisions of Relativistic Electrons in the Field of
... electron energies and scattering angles (excluding an ultrarelativistic electron with an energy E ~ m2 /ω that moves within a narrow cone related to a spontaneously emitted photon), the resonant frequency ω' of the spontaneously emitted photon is multiple of frequencies ωi,f (3.19) for the direct an ...
... electron energies and scattering angles (excluding an ultrarelativistic electron with an energy E ~ m2 /ω that moves within a narrow cone related to a spontaneously emitted photon), the resonant frequency ω' of the spontaneously emitted photon is multiple of frequencies ωi,f (3.19) for the direct an ...
memory effects in the dynamics of open quantum systems
... insights into various features of memory effects. The objective is, in particular, to shed light on the different sources of memory effects and to further develop methods for harnessing them in order to realise controllable open quantum systems that could be used for e.g. probing some specific environm ...
... insights into various features of memory effects. The objective is, in particular, to shed light on the different sources of memory effects and to further develop methods for harnessing them in order to realise controllable open quantum systems that could be used for e.g. probing some specific environm ...
Quantum structures, separated physical entities and probability
... introduced in (1,3,4,5,6) , is easy to point out. Therefore we shortly explain the concept of ’property’ and ’test’ (experimental project or question) as used in (1,3,4,5,6) . A test is an experiment that can be performed on the entity and where one has agreed in advance what is the positive result. ...
... introduced in (1,3,4,5,6) , is easy to point out. Therefore we shortly explain the concept of ’property’ and ’test’ (experimental project or question) as used in (1,3,4,5,6) . A test is an experiment that can be performed on the entity and where one has agreed in advance what is the positive result. ...
Photon-number-splitting versus cloning attacks in practical
... and Bob, that share a quantum channel and a classical authenticated channel 关1兴. Its security comes from the wellknown fact that the measurement of an unknown quantum state modifies the state itself: thus an eavesdropper on the quantum channel, Eve, cannot get information on the key without introduc ...
... and Bob, that share a quantum channel and a classical authenticated channel 关1兴. Its security comes from the wellknown fact that the measurement of an unknown quantum state modifies the state itself: thus an eavesdropper on the quantum channel, Eve, cannot get information on the key without introduc ...
Ultrafast Spectroscopy of Atomic and Molecular Quantum Dynamics Pia Johansson
... where the ck coefficients describe the excitation of the molecule from the initial state and can be determined by first order perturbation theory, and the sum ranges over k such that all stationary states excited by the ultrashort pulse are included [2]. This superposition of stationary eigenstates ...
... where the ck coefficients describe the excitation of the molecule from the initial state and can be determined by first order perturbation theory, and the sum ranges over k such that all stationary states excited by the ultrashort pulse are included [2]. This superposition of stationary eigenstates ...
Photon-Number-Splitting versus Cloning Attacks in Practical
... However, perfect single-photon sources are never available, and in most practical implementation the source is simply an attenuated laser. This means that some of the pulses travelling from Alice to Bob contain more than one photon. These items, in the unavoidable presence of losses in the quantum c ...
... However, perfect single-photon sources are never available, and in most practical implementation the source is simply an attenuated laser. This means that some of the pulses travelling from Alice to Bob contain more than one photon. These items, in the unavoidable presence of losses in the quantum c ...
Stimulated emission from single quantum dipoles
... where d , , is the dipole matrix element. In deriving this result, the two-level system is assumed to have a spatial extent small in comparison to the optical wavelength so that the dipole approximation is applicable. In particular, the spatial variation of the optical wave is rcmoved from the inter ...
... where d , , is the dipole matrix element. In deriving this result, the two-level system is assumed to have a spatial extent small in comparison to the optical wavelength so that the dipole approximation is applicable. In particular, the spatial variation of the optical wave is rcmoved from the inter ...
Three problems from quantum optics
... was not motivated by attempting to explain quantum optics systematically but I rather talk about problems I was working on in the past five years. The thesis is based on a set of articles that have been published in international physical journals and are attached at the end of the thesis. The first ...
... was not motivated by attempting to explain quantum optics systematically but I rather talk about problems I was working on in the past five years. The thesis is based on a set of articles that have been published in international physical journals and are attached at the end of the thesis. The first ...
Blinking suppression of single quantum dots in agarose gel
... shown in Fig. 1. For QDs on glass and in 0.3% gel stochastic fluctuation between fluorescent “on” level and dark “off” level was observed. In contrast, the time trace for single QDs in 1% gel exhibits essentially continuous emission without dark periods. Previous research showed that agarose gel fib ...
... shown in Fig. 1. For QDs on glass and in 0.3% gel stochastic fluctuation between fluorescent “on” level and dark “off” level was observed. In contrast, the time trace for single QDs in 1% gel exhibits essentially continuous emission without dark periods. Previous research showed that agarose gel fib ...
Entanglement in single-particle systems
... 103 ratio between the masses of proton and electron, it is a good approximation to call these the electronic states of the atom. Consequently, the groundstate of a hydrogen atom is a tensor product of the groundstate of the free centre of mass (i.e. a plane wave of zero momentum) and the groundstate ...
... 103 ratio between the masses of proton and electron, it is a good approximation to call these the electronic states of the atom. Consequently, the groundstate of a hydrogen atom is a tensor product of the groundstate of the free centre of mass (i.e. a plane wave of zero momentum) and the groundstate ...
Number Fluctuations and Phase Diffusion in a Bose
... already discussed in Chapter 1, the most challenging experimental task is to be able to independently tune the photon number and the temperature of the photon gas. We start by giving a general idea of the experimental scheme used by the Bonn group. We proceed by showing how the photons in the experi ...
... already discussed in Chapter 1, the most challenging experimental task is to be able to independently tune the photon number and the temperature of the photon gas. We start by giving a general idea of the experimental scheme used by the Bonn group. We proceed by showing how the photons in the experi ...
Interferometry beyond the Standard Quantum Limit using a Sagnac
... quantum noise falling with 1/f2. Ü Want to investigate how losses in different parts of the interferometer contribute. ...
... quantum noise falling with 1/f2. Ü Want to investigate how losses in different parts of the interferometer contribute. ...
Many-particle interference beyond many-boson and many
... Hong–Ou–Mandel [10] effect: two indistinguishable photons that fall simultaneously onto the input modes of a beam splitter with reflectivity 1/2 always bunch and leave the setup together. Fermions behave in the opposite way; the Pauli principle enforces them to anti-bunch and to choose distinct outp ...
... Hong–Ou–Mandel [10] effect: two indistinguishable photons that fall simultaneously onto the input modes of a beam splitter with reflectivity 1/2 always bunch and leave the setup together. Fermions behave in the opposite way; the Pauli principle enforces them to anti-bunch and to choose distinct outp ...